how much l-methionine can you take a day?
Even without B-vitamin deficiencies, taking high doses of methionine â 7 grams daily or more â can increase your homocysteine levels. Taking up to 2 grams per day of methionine doesnât appear to cause any serious adverse effects, however. Creatine supplements pose their own risks as well, particularly the risk of kidney damage, when taking high doses, and heart arrhythmias.