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MFDS allows academic marketing of EUA COVID-19 treatments
by
Sep 28, 2022 06:05am
The Ministry of Food and Drug Safety gave an interpretation that allows academic marketing activities for oral COVID-19 treatments. As drugs approved under the Emergency Use Authorization are as validly approved as officially authorized drugs, such drugs that were left unattended by the Pharmaceutical Affairs Act can also be advertised within its approved indication. With this favorable interpretation, the healthcare professionals’ access to information that arose as a barrier in prescribing COVID-19 treatments will also gain momentum and be improved. During a phone interview with Dailypharm on the 26th, an official from the Ministry of Food and Drug Safety said, “The Korea Disease Control and Prevention Agency is in charge of the overall management of EUA drugs, from its use volume to distribution. Therefore, the KDCA needs to determine the need for the drugs’ advertisement, etc. Although academic marketing is not necessary for EUA drugs as they are not directly sold by individual pharmaceutical companies, the companies may jointly provide information with the KDCA for reasons such as raising the prescription rate, etc. The official added, “Applying the Pharmaceutical Affairs Act mutatis mutandis for such academic marketing activities mean that the companies that received EUAs for their drugs can advertise their products within their approved indications as the EUA is also a form of ‘authorization' subject to the mutatis mutandis application of the Pharmaceutical Affairs Act. It does not mean we are forbidding academic marketing activities of pharmaceutical companies.” Until now, advertising of EUA drugs had been left in the blind spot with no clear regulations. The EUA system was introduced under the Special Act on the Promotion of Development and Urgent Supply of Medical Products in Response to Public Health Crisis to promptly respond to the rise of new infectious diseases. The law does not have specific regulations set for the advertisement of EUA drugs. As no issues relevant to such had risen until recently, the MFDS had taken a principled position, saying that “no advertisement-related regulations are available under the Special Act, therefore the issues are applied mutatis mutandis to the Pharmaceutical Affairs Act.” Pharmaceutical companies had taken this as a “No advertising” stance, as EUA drugs are not subjects for advertisement under Article 68-5 of the Pharmaceutical Affairs Act. The article specifies that an imported pharmaceutical product’s name, manufacturing method, and efficacy cannot be advertised unless the drug product has been approved or reported according to Article 42-1 of the Pharmaceutical Affairs Act. If taken word by word, as drugs granted Emergency Use Authorization was not approved under Article 42-1 of the Pharmaceutical Affairs Act, such drugs are not allowed to conduct advertisements. Also, at the time of introductions, when pharmaceutical companies had asked the MFDS several times on what scope of information provision activities are allowed for their EUA drugs, the MFDS only responded that “It is difficult for the ministry to provide a definite answer due to lack of information in determining the necessity and validity of providing information." The pharmaceutical companies then received the response as a “Don’t.” This was why officials from pharmaceutical companies had been passive in conducting activities for their drugs, only responding when receiving inquiries from healthcare professionals. Unlike formally approved drugs, companies were unable to conduct educational or promotional activities such as directly explaining their drugs or delivering drug information to healthcare professionals. However, the Advisory Committee on Infectious Diseases deems the academic marketing activities of pharmaceutical companies necessary to raise the prescription rate. During a phone interview with Dailypharm, Gi-Seok Jeong, Director-General of Special Response of the Central Disaster and Safety Countermeasure Headquarters, said, “Despite the state’s efforts in encouraging the prescription of oral COVID-19, there are still many cases in which prescriptions are not available to patients who need them in the medical field. Adding pharmaceutical companies' information provision activities to the effort will help increase the prescription rate.” In other words, although the KDCA is in charge of training healthcare professionals and providing medication guidance to patients, etc., for the EUA drugs, it has been experiencing limitations with the expanded number of institutions that can prescribe oral COVID-19 treatments It was found that many medical staff and pharmacists have not yet received the prescription and medication guide, which is creating confusion in the medical field. This is analyzed to have also impacted the slow rise in the prescription rate of COVID-19 treatments. According to the 'Measures to Raise Prescriptions of Oral COVID-19 Treatments’ that had been reported by CDSCH last month, healthcare professionals were reluctant to prescribe oral COVID-19 treatments due to a large number of contraindicated drugs and lack of clinical information. Accordingly, the authorities are contemplating ways to increase accessibility to information by preparing educational materials and prescription guidelines. The MFDS said that there was a miscommunication in the course of interpreting the Pharmaceutical Affairs Act. Still, the MFDS is presumed to have had a negative stance on advertising activities of COVID-19 treatments in the earlier stages of introduction. It is believed as the KDCA is in charge of providing information, there is no reason for the company to conduct additional academic marketing. However, with the emphasis put on expanding access to information among healthcare professionals, it seems that the MFDS has broadened its scope of interpretation to “Companies may advertise if KDCA deems it necessary.” Furthermore, the MFDS has formalized its position that even drugs approved under EUA may conduct academic marketing activities just like drugs that have received official approval. An MFDS official said, "As KDCA is in charge of supplying and managing the EUA drugs, companies may of course cooperate with the agency when it needs support. When the KDCA requested on a similar note in the middle of this year, we answered that such activities can surely be conducted if the government deems it necessary.”
Company
Reduce steroid in long-term use of Dupixent in asthmatic pts
by
Sep 28, 2022 06:05am
Sanofi's Dupixent was found to improve major symptoms in a three-year long-term follow-up of severe asthma patients while reducing the use of oral corticosteroids. The results of these studies were released at the 2022 ERS Annual Academic Conference held from the 4th to the 6th. Through this conference, Dupixent released a number of data and RWE data confirming the improvement effect of asthma symptoms related to type 2 inflammatory biomarkers to solidify the treatment effect and safety profile in type 2 inflammatory severe asthma. It proved that it is a treatment that reduces the frequency of deterioration of severe asthma and lowers the severity, thereby helping to reach the treatment goal of severe asthma. Post-analysis study data from VENTURE/TRAVERSE clinical trials once again suggested that Dupixent could be a treatment solution for severe asthma patients, including Steroid-dependent patients. According to published data, Dupixent reduced steroid use for three years while improving major symptoms of asthma, including severe annual exacerbation and lung function deterioration. The results of this post-analysis study were conducted on Steroid-dependent asthma patients who participated in the VENTURE study, the existing phase 3 clinical trial of Dupixent. Patients who were administered Dupixent 300 mg or placebo every two weeks in the existing VENTURE clinical trial received additional Dupixent for up to 96 weeks through TRAVERSE clinical trials. These patients were analyzed by dividing them into patients who used Steroids less than or equal to 10 mg per day. If the daily usage exceeds 10 mg, caution is needed as it can be exposed to steroid side effects such as diabetes and osteoporosis in the long run. According to the main results, Dupixent decreased the annual severe asthma exacerbation rate of patients regardless of Steroid use at 96 weeks from the end of the previous study, VEUNTURE. Among patients with daily Steroid use exceeding 10 mg, the placebo-administered group showed an improvement of more than 81% in the annual severe asthma exacerbation rate at 96 weeks of Dupixent administration. It was also found to have improved by more than 43% in the existing Dupixent administration group, confirming the effect of Dupixent in Steroid-dependent asthma patients. In the group of patients with daily steroid use of 10mg or less, it was found to have improved by more than 80% and 36%, respectively, compared to the baseline of the VENTURE study. Steroid use also decreased as asthma symptoms improved with Dupixent. Dupixent reduced Steroid use by more than 70% at 96 weeks of administration, regardless of both Dupixent/ placebo administration and Steroid use compared to the baseline of the VENTURE study. Patients with daily steroid use exceeding 10 mg also decreased by 83%, confirming the long-term treatment effect of Dupixent in Steroid-dependent patients. The data released on that day also included RWE data from the United States analyzed for severe asthma patients who received Dupixent. According to the data, Dupixent reduced the rate of emergency room visits related to asthma by up to 73.4%, and the rate of hospitalization by up to 66.7%. In addition, it has been confirmed that medical expenses related to asthma have been reduced by reducing the frequency of visits to internal medicine.
Company
MOHW's view of ‘few’ and ‘pediatric’ for PE exemptions
by
Eo, Yun-Ho
Sep 27, 2022 05:51am
Chang-Hyun Oh, Director of Pharmaceutical Benefits at the Ministry of Health and Welfare Although yet to be finalized, the PE exemption criteria will not be amended' in the direction desired by pharmaceutical companies. In particular, companies are likely to have little room in utilizing the special exemption of the pharmacoeconomic evaluation system due to the restrictions set, such as treatments that are used by ‘few’ patients and those with ‘pediatric’ indications. The period for industry opinion collection still remains, with the deadline being the 30th. But as the government is determined to implement the amendments to the system, to what extent the opinions will be reflected remains to be seen. Chang-Hyun Oh, Director of Pharmaceutical Benefits at the Ministry of Health and Welfare, said so regarding the “Measures to Improve Patient Access and Manage Reimbursement of High-Priced Severe Disease Treatments" at a recent meeting with the multinational pharmaceutical company press gallery. The ‘Few’ patients standard to be maintained at a 200-patient level The government's improvement plan raised industry concerns because it changes the major premise set for PE exemptions. The new change adds ‘few numbers of subject patients’ as a prerequisite for PE exemptions. Originally, the condition was a ‘OR’ clause included with other optional clauses such as ‘if a single-arm study was conducted,’ under Subparagraph 2(c) of Regulation for Drugs Subject to PE Exemptions. The ‘few’ was defined to be in the 200 range. Although the exact number has not been specified in the condition, the PE exemption evaluations has been made at that level. Therefore, there were many opinions in the industry that the number defined as a ‘few’ should be adjusted upward if the condition was to become a prerequisite. However, Director Oh said, “We don’t plan to change the standards we set to define the ‘few’ just because of the amendment. However, no specific number is universally applied to all drugs, therefore, the number may be flexibly adjusted to a small extent for each drug in the future." In other words, if the amendment is applied as is, all drugs that seek PE exemptions will first have to satisfy the 'few numbers of patient' (around 200) requirement, then receive recognition from the committee for their difficulty to generate PE data. What about drugs that have broader indications that are applied to pediatric to adult patients? The main point of the system improvement being made was to improve coverage for pediatric patients. The government had added the clause 'drugs used to treat pediatric patients that are therapeutically equivalent or has no available treatment option, and demonstrates improvement in quality of life or is otherwise approved by the committee.' In essence, the added clause excluded the 'life-threatening disease' condition for PE exemptions just for pediatric patients. In other words, if drugs used for pediatric patients satisfy the remaining conditions, the PE exemption may be applied even if the condition is not life-threatening. On the surface, it seems like an encouraging improvement. However, there were wild speculations in the industry on what the scope of 'drugs used in pediatric patients' will be. The government had not specified whether the 'drugs used to treat pediatric patients' clause applies only to diseases that occur only in children, drugs that only have indications for children, or drugs that can be prescribed broadly to children and adults. However, it is likely that this clause will also not be widely applied. Director Oh said, “It is difficult to provide a clear answer on that part. However, the system was not intended to limit the indication of drugs that can be used for even the adults to only children so that they can take the PE exemption track."
Company
Daewoong Nabota is expected to take a global leap
by
Nho, Byung Chul
Sep 27, 2022 05:51am
As Daewoong Pharmaceutical's botulinum toxin product Nabota (Jubo·Jeubeau) is likely to surpass 100 billion won in sales this year, it is drawing attention as it is expanding its global scope as a representative K-toxin product. Nabota, which was launched in Korea in 2014, recorded 15.1 billion won in 2019 It achieved sales of 79.6 billion won last year after Quantum Jump, 233% sales of 50.4 billion won the following year. After the FDA approved the final item license in February 2019, it began to target the North American market in May of the same year. The U.S. occupies 50% of the global toxin market worth 6 trillion won, and Allergan Botox products are leading the treatment, beauty, and plastic surgery market. Europe is the second-largest market for toxin drugs, and Nabota is expected to be launched in the second half of this year. Item licenses in China, which are highly regarded for its rapid growth and potential market value, are also expected to be approved as early as this year, and full-fledged releases and profits are expected from next year. Evolus is in charge of the beauty business partners in the U.S., Europe, Australia, and Canada, while Ion Biopharma is in charge of the treatment business partners in the U.S. Currently, Nabota is in charge of production at the first plant of Hyangnam Pharmaceutical Complex, and when the second plant is completed in 2025, it is expected to become a global leading company as it can produce a total of 5 million vials per year. As of September 2022, Nabota's indications include eyelid wrinkles, eye wrinkles (abnormal beauty), improvement of upper extremity muscle stiffness after stroke, and eyelid cramps (abnormal treatment). As for the progress of additional indications, it is waiting for approval after submitting approval to the MFDS in April 2022 for the world's first item permission to add positive adiabatic hypertrophy (square jaw improvement). In addition, phase 2 clinical trials for chronic and inflammatory migraine and cervical muscle tension are underway in the United States, Canada, and Australia. A panoramic view of Nabota Chronic migraine headaches account for 40% of the total treatment market, and there is no competition other than Botox yet. If Nabota enters this field, it is expected to penetrate the market quickly based on price competitiveness.I t is also preparing clinical trials for gastric paralysis indications, which do not yet have a clear treatment. It is predicted that a new treatment paradigm can be provided in a unique way by injecting toxin directly into the upper and lower parts of the stomach through endoscopy. In addition to the three global toxin markets, plans to release them in niche markets such as Turkey, Chile, Peru, Saudi Arabia, Egypt, and Indonesia are also drawing attention. Nabota is a premium toxin brand based on high-pure technology patent technology. An official from Daewoong Pharmaceutical said, "Nabota is the only product in Asia that has been approved for sales in the United States, Europe, and Canada." "We plan to expand our markets in the U.S., Europe, and China through aggressive investment in the future," he said. Meanwhile, Nabota's ITC lawsuit disappeared in February last year when Daewoong Pharmaceutical's U.S. partner Evolus signed a three-way agreement with AbbVie and Medy Tox, and has since grown rapidly based on U.S. exports. Of Nabota's overseas sales in the second quarter, exports to the U.S. through Evolus amounted to 21.1 billion won, which doubled from the same period last year.
Company
4 pharmaceutical companies challenge to add Vemlidy patents
by
Kim, Jin-Gu
Sep 27, 2022 05:51am
VemlidyGilead Sciences' patent for hepatitis B treatment Vemlidy (Tenofovir) is increasing. While Dong-A ST, Daewoong Pharmaceutical, Chong Kun Dang, and Jeil succeeded in avoiding patents for the first time in March this year, Samjin, Hutechs, DongKook, and Samil have challenged the same patent for the past two months in a row. According to the pharmaceutical industry on the 23rd, Samil recently requested a passive judgment on the scope of rights for the Gilead Vemlidy salt patent. Since Samjin challenged the same patent in July, a total of four companies, including Hutechs and DongKook, have joined patent disputes in the past two months. This patent has already been successfully avoided by Dong-AST, Daewoong, Chong Kun Dang, and Jeil in March this year. Samjin, Hutechs, DongKook, and Samil challenged the same patent as generics. The background of a series of generic challenges is that there is no impact on generic exclusivity. The drug is an upgraded version of Gilead's existing hepatitis B treatment Viread. However, since the main ingredient is Tenofovir, generic for Vemlidy is not given a separate opportunity to acquire generic exclusivity. Gilead developed a new Vemlidy in the form of pro-drug. Through this, drug resistance and renal toxicity side effects have been improved. Vemlidy is rapidly replacing the existing Viread in the hepatitis B treatment market. According to IQVIA, a pharmaceutical market research firm, sales of Vemlidy surged in four years from 500 million won in 2017, the first year of its launch, to 28 billion won last year. During the same period, Vemlidy's sales nearly halved from 129.3 billion won to 63.1 billion won.
Company
Praluent can be prescribed at general hospitals
by
Eo, Yun-Ho
Sep 26, 2022 06:08am
PCSK9 inhibitor Praluent has settled on general hospitals. After registering insurance benefits in June 2021, the landing process is steadily underway. According to related industries, Sanofi-Aventis Korea's Praluent passed the Pharmaceutical Affairs Committee (DC), including Samsung Medical Center, Asan Medical Center, Sinchon Severance Hospital, Bundang Seoul National University Hospital, Chonnam National University Hospital, and Pusan National University Hospital. The drug was approved in Korea in January 2017, but was listed last year. Amgen Korea's Repatha, which was approved around the same time, was first registered as a Homozygous Family Hypercholesterolemia (HOFH) indication in August 2018. In other words, there were two PCSK9 inhibitors, but in fact, Repatha was the only option. Since last year's salary registration, Sanofi has carried out the landing process at general hospitals, and as it has shown results this year, the competition between the two drugs is expected to begin in earnest. In January 2020, Repatha succeeded in expanding the criteria for high-risk patients with atherosclerotic cardiovascular disease (ASCVD), heterozygous family hypercholesterolemia (HeFH), and non-heterozygous patients. It is believed that the actual battlefield between the two drugs will also be the ASCVD and HeFH regions. Praluent added a HoFH indication in the United States in April last year. Praluent has a tendency to reduce the risk of all-cause death, and it has the advantage of being able to select patient-specific doses by referring to patient status and LDL-C levels as two approved drugs, Praluent 75 mg and Praluent 150 mg. Meanwhile, MSD is currently developing oral PCSK9 inhibitor. MSD announced phase 1 clinical results of the candidate substance MK-0616 at the American Heart Association (AHA) conference last year. Studies have shown that up to MK-0616 300 mg was administered to healthy men, or LDL cholesterol was reduced without serious side effects or death when administered with Statins in men and women with high cholesterol.
Company
The anesthetic drug Byfavo is available in general hospitals
by
Eo, Yun-Ho
Sep 26, 2022 06:08am
Byfavo, the first anesthetic drug in 30 years, has settled on a general hospital prescription. According to related industries, Hana Pharmaceutical's Byfavo passed the Drug Commission (DC) of Big 5 General Hospitals, including Seoul National University Hospital, Asan Medical Center, and Sinchon Severance Hospital. Byfavo is a new anesthetic drug released more than 30 years after the approval of the frequency prescription general anesthetic Propofol. Byfavo, which was launched in March, secured manufacturing rights and exclusive sales rights from Germany's Paion in 2013. Since 2018, phase 3 clinical trials have been completed for 198 subjects who perform general anesthesia in Korea. The main indication is inducing and maintaining general anesthesia in adults. Byfavo is a pure anesthetic new drug that has no analgesic effect, and has pharmacological and pharmacological advantages of existing general anesthetics such as Propofol and Midazolam. Hana is under construction with German freeze-drying facilities through its new Hagi plant, which is expected to operate in 2023, and designed to supply Byfavo to advanced markets. In addition, it acquired additional copyrights to Byfavo in six Southeast Asian countries from the original developer Paion in Germany, and completed all internal work to receive permission documents in these countries
Company
Half of pts with macular degeneration have ↓ effect
by
Sep 26, 2022 06:07am
Researchers expect the new VEGF inhibitor Beovu to address unmet demand. Patients with neovascular age-related macular degeneration in Korea had more than half of retinal exudates at the time of one year of treatment, indicating that the vision improvement effect was not significant. It was found in PROOF, which evaluated the retinal exudate regulation effect of the first year of existing VEGF inhibitor treatment in age-related macular degeneration patients. The results of the PROOF study, in which 12 domestic ophthalmic medical staff, including Kim Jae-hwi, a specialist at Kim's eye clinc, participated as the author, were published in the Scientific Reports on August 19. According to the study, more than half of the age-related macular degeneration patients in Korea treated with existing VEGF inhibitors such as Lucentis and Eylea remained retinal exudates until the first year of treatment, and their vision improvement effects were relatively poor. The PROOF study is a retrospective study based on the medical records of 600 age-related macular degeneration patients who visited ophthalmology hospitals in Korea from January 2017 to March 2019. The primary evaluation index is the proportion of patients with retinal exudations such as intra-retinal fluid/retinal subcutaneous fluid in the first year of treatment. In the early stages of treatment, 97.2% of patients had retinal exudate, and the rate after one year was 58.1%. The intra-retinal fluid, sub-retinal fluid, and retinal pigment epithelial fluid remained in 24.7%, 37.6%, and 21.2%, respectively. The proportion of patients with retinal exudate in the second year (24 months) of treatment reached 66.0%. In the first year of treatment, patients who did not have retinal effusions adjusted showed better eyesight improvement compared to those who did not. Patients with continuous retinal exudation control for a long period of time until the first year of treatment also showed better vision improvement effects. Whether retinal exudates remain is a major factor affecting vision improvement. Retinal exudates are frequently observed through optical tomography in age-related macular degeneration patients. Some studies have shown that if a new retinal exudate occurs during treatment, vision is likely to decrease by more than five characters. Retinal exudation is considered a sign of disease activity and requires additional VEGF inhibitor treatment. The researchers explained, "In actual clinical sites, there is a burden of treatment of existing VEGF inhibitors due to problems such as frequent administration and frequent hospital visits, and patients are not seeing the optimal treatment effect from a long-term perspective." Accordingly, it is expected that new anti-VEGF treatment therapy will be expected to help solve the unmet demand by reducing the burden of treatment with a prolonged mechanism of action. The researchers mentioned Beovu as a new anti-VEGF treatment. Brolusizumab is an antibody fragment drug that inhibits all VEGF-A isomorphic proteins. In phase 3 clinical trials, the Blucizumab 6mg dose group showed better disease control effects, including superior retinal exudation control effects compared to the Aflibercept 2mg group. After administration of loading dose, the Aflibercept group was administered every 8 weeks, while more than 50% of the Brolucizumab group was administered every 12 weeks. Kang Se-woong, an ophthalmologist at Samsung Medical Center at Sungkyunkwan University, said, "The emergence of anti-VEGF treatments has lowered the rate of blind or vision-damaged patients, but there is still an unmet demand for retinal exudation." He said, "We welcome the introduction of new and diverse treatment options to clinical sites and hope that this will help address unmet demand and ultimately prevent patients from impaired vision."
Company
Nubeqa can be prescribed at general hospitals
by
Eo, Yun-Ho
Sep 23, 2022 05:52am
Nubeqa, a prostate cancer treatment, can be prescribed at general hospitals. According to related industries, Bayer Korea's oral androgen receptor inhibitor (ARi) Nubeqa for nmCRPC treatment passed the DC of medical institutions such as Samsung Medical Center, Seoul National University Hospital, Seoul Asan Hospital, and Sinchon Severance Hospital. Nubeqa has not yet been covered by insurance benefits, so it is expected to take time to lead to actual prescription activation. The drug has not been registered since the HIRA Cancer Disease Review Committee ruled it failed in February 2021. Nubeqa is an androgen receptor inhibitor with a unique chemical structure that binds to androgen receptors to inhibit the growth of prostate pressure cells through strong antagonism. It was approved based on ARAMIS, a phase 3 clinical study that compared and evaluated the efficacy and safety of Nubeqa and placebo controls in combination with ADT. The main evaluation item of the study, MFS, was 40.4 months in the Nubeqa and ADT combinations, demonstrating significant improvement over 18.4 months in the placebo and ADT combinations. It was confirmed that the risk of death decreased by 31%. In addition, the Overall Survival data derived from the final analysis results pre-specified in a recent ARAMIS study was published in the New England of Medicine (NEJM) on the 9th. As a result of the study, the combined survival period of the Nubeqa and ADT groups was statistically significantly improved compared to the combined placebo and ADT groups, and the risk of death decreased by 31%. This result is significant in that as of November 15, 2019, when data for final analysis was confirmed, 55% of patients in combination placebo and ADT received treatment for Nubeqa or other life extension as follow-up treatment.
Company
Aricept grows to make ₩70B ... Ebixa nears ₩15B
by
Nho, Byung Chul
Sep 22, 2022 06:02am
Eisai Korea’s Aricept (donepezil hydrochloride) continued on its solid lead in the original Alzheimer’s treatment market, occupying nearly 70% of the KRW 100 billion market. According to drug distribution performance data, Aricept’s made KRW 71 billion, 65.5 billion, 69.2 billion, and 70.3 billion in 2018, 2019, 2020, and 2021, respectively, virtually leading the market ever since its release. Aricept Evess, an orally disintegrating tablet formulation with the same ingredient that was approved in 2008 has been showing sales in the KRW 6 billion to 9 billion range. The runner-up in the market, Lundbeck Korea’s Ebixa (memantine hydrochloride), which had maintained blockbuster-worthy sales in the KRW 10 billion range for 3 consecutive years from 2018 to 2020, had seen halved sales last year, making KRW6.2 billion. However, as the company had recorded KRW 7.7 billion in sales in 1H this year, the company is expected to gross sales around KRW14 billion this year. In 2021, Novartis’s Exelon (rivastigmine tartrate) and Janssen’s Reminyl (galantamine hydrobromide) have made around KRW 6.2 billion each. Exelon’s sales in 2018,2019,2020 were KRW 2.9 billion, 4.5 billion, and 5.3 billion, respectively, and Reminyl PR made KRW 4.3 billion, 5.4 billion, and 5.8 billion, respectively, during the same period. Eisai Korea’s Aricept, which was the second dementia treatment to be approved by the US FDA in 1995, is a donepezil formulation that had improved the convenience of intake by allowing once daily intake before sleep. Unlike acetylcholinesterase inhibitors that have the inconvenience of requiring an initial dose-escalation phase, where patients need to start with a very low dose and then increase the dose until the patients achieve the therapeutic dose, the initial dose for Aricept is 5mg, and can be increased to 10mg for maximum effect. Aricept has the advantage as patients can maintain the treatment dose that it has better tolerability and does not cause liver damage. Due to the specificity of the formulation and its mechanism of action, patients who had suffered from ulcers in the past need to frequently monitor gastrointestinal bleeding. Novartis’s Exelon, which had been the third to be approved in the field in 2000, contains rivastigmine, Like Aricept, it works by blocking the enzyme that breaks down acetylcholine --acetylcholinesterase – which transmits excitement to the neuron synapse, a neuronal junction. By blocking these enzymes, Exelon allows patients to recover cognitive function. Exelon is effective in moderate-to-severe Alzheimer’s patients, but if symptoms such as nausea, vomiting, abdominal pain, weight loss, etc. are observed during the course of administering the dose should be reduced. The fact that this drug also does not show hepatotoxicity is evaluated as its greatest advantage. Janssen’s Reminyl PR is the fourth Alzheimer’s treatment that was approved by the FDA in 2001. Reminyl contains galantamine, a herbal ingredient derived from the bulbs of the daffodil, Narcissus pseudonarcissus. Although it has a similar mechanism of action as Aricept or Exelon, it does not have the ability to stop or repair nerve cell damage that is indicated as the cause of Alzheimer's. Therefore, the drug does not dramatically reverse the course of the disease but enables patients to defer progression in cognitive impairment damage or provide slight recovery. At a memory test conducted in a clinical trial, the control group’s memory had deteriorated by 5 to 11 points, compared with the high-dose Reminyl group that maintained its initial score. Also, patients with vascular dementia and mixed type dementia that took Reminyl were able to relatively preserve their memory, orientation, and language ability. Lundbeck’s Namenda (Ebixa) which was approved in 2003 as a severe Alzheimer’s treatment is an antagonist to the NDMA receptors in the nerve cells. It inhibits the overstimulation of NDMA receptors by excessive glutamate. Unlike acetylcholinesterase inhibitor class treatments that are indicated for moderate-to-severe Alzheimer’s, Namenda showed significant inhibition in the deterioration of cognitive or physical function in severe patients in a clinical trial where patients were administered 20mg of Namenda for 28 weeks. Also, the drug has been positively received for raising the level of treatment for dementia of the Alzheimer's type in a clinical trial in combination with Aricept. In June 2021, despite the overwhelming negative opinions from advisors, Aduhelm (Aducanumab), which was developed by Biogen/Eisa received FDA approval. Its launch in Korea is also in preparation. The FDA said Aduhelm provides significant benefits to patients by reducing the build-up of accumulated amyloid beta plaques. Its once-every-four-week method of administration had opened a new horizon in drug delivery, its cost of KRW 60 million per year remain a large burden for the patients. The first FDA-approved drug for Alzheimer’s is tacrine, which was launched in 1933, but the use of the drug is restricted due to hepatotoxicity. Other acetylcholinesterase inhibitors used for the treatment of Alzheimer's disease include donepezil, rivastigmine, and galantamine. Patients should start with a relatively low dose and gradually increase the dose of Alzheimer’s treatment according to the principle of geriatric pharmacology in principle, and must take the drug while closely monitoring its effect and side effects.
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