Methionine is an essential amino acid found in many meat, fish, and dairy products. Amino acids are the building blocks that our bodies use to make proteins. Essential amino acids cannot be made by the body and must be obtained from food and nutritional supplements. There are two types of methionine, L-methionine (the naturally occurring form) and D-methionine. While both forms contain the same chemical makeup, our bodies can only convert the L-methionine into protein, hence L-methionine is more commonly seen in nutritional supplements.
Methionine plays an important role in many cell functions and is required for growth and tissue repair. It is essential for the absorption of Selenium and Zinc. It improves the tone and pliability of skin, hair, and strengthens nails. Methionine also plays a role in many detoxifying processes. It protects cells from pollutants and heavy metals, such as lead and mercury, and is also used to prevent liver damage in Paracetamol (Acetaminophen) poisoning.
Methionine is commonly available as tablets or capsules which may be taken by mouth. The daily recommended intake of methionine (with another amino acid called cysteine) is 14 mg per kg body weight for adults, and 22-27 mg per kg body weight for children aged 2 or above. For specific dosages, please refer to specific product labels.
Common dosing schedule:
Please refer to specific product instructions.
Some common medications Methionine may interact with:
In Hong Kong, Methionine is an over-the-counter medicine and can be purchased without a prescription from any retail outlet in Hong Kong. This includes grocery stores, convenience stores, medicine shops, and pharmacies. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.
For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at https://www.drugoffice.gov.hk
Need more information?
For detailed information about the use of Methionine (Supplement) in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.
Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.
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