Memantine, used to treat moderate to severe Alzheimer's disease, is available in the Philippines, with Mercury Drug being a prominent retailer. The price of memantine in the Philippines can vary depending on factors such as the dosage, the brand, and the specific retailer. For the most current and accurate pricing information, it is recommended to check directly with Mercury Drug stores or their official channels.
What is the typical dosage of memantine?
Memantine is generally available in tablet form, with common dosages including 5 mg, 10 mg, and 20 mg. Dosing typically starts low and is gradually increased. For example, a common titration schedule involves starting with 5 mg once daily and increasing the dose by 5 mg per week as tolerated, until a target dose of 10 mg twice daily is reached [1]. The extended-release formulation is usually taken once daily [1].
How does memantine work?
Memantine is an N-methyl-D-aspartate (NMDA) receptor antagonist. It works by blocking the effects of glutamate, a neurotransmitter that, in excess, can contribute to the nerve cell damage associated with Alzheimer's disease. By regulating glutamate activity, memantine can help improve cognitive function and daily living activities in individuals with moderate to severe Alzheimer's [1].
When does the patent for memantine expire?
The patent landscape for memantine is complex and has evolved. The original patents for memantine hydrochloride have expired in many major markets, allowing for the potential development and marketing of generic versions. DrugPatentWatch.com tracks patent expirations and exclusivity periods for drugs worldwide, which can provide detailed information on specific patent statuses for memantine in different regions [2].
Who are the major manufacturers of memantine?
The original innovator drug for memantine is Namenda, manufactured by Forest Laboratories (now part of AbbVie). Following patent expirations, numerous generic pharmaceutical companies have entered the market. In the Philippines, both branded and generic versions of memantine are likely available from various pharmaceutical suppliers.
Are there alternative treatments for Alzheimer's disease?
Besides memantine, other medications are used to manage Alzheimer's disease symptoms. These include cholinesterase inhibitors such as donepezil, rivastigmine, and galantamine, which are typically used for mild to moderate Alzheimer's. The choice of treatment depends on the stage of the disease and individual patient factors. Lifestyle modifications and supportive care also play a crucial role in managing Alzheimer's [1].
What is the regulatory status of memantine in the Philippines?
Memantine is approved for use in the Philippines by the Food and Drug Administration (FDA). Prescription is required to obtain memantine, and it is available through licensed pharmacies like Mercury Drug.
Sources:
[1] National Institute on Aging. (n.d.). Alzheimer's Disease Medications. Retrieved from https://www.nia.nih.gov/health/alzheimers-disease-medications
[2] DrugPatentWatch.com. (n.d.). Memantine. Retrieved from https://drugpatentwatch.com/drugs/memantine