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L-Methionine: study protocols

7 study groups say how much L-Methionine participants took a day. These are the doses the studies gave. They are not a recommendation.

L-Methionine: what the research found →

Dose per serving from products

2,091 products in our catalogue print how much L-Methionine a serving holds.

Most common: 100 mg to 250 mg, 18% of 2,091 products.

Dose per servingProducts
5 mg or less
29
5 mg to 10 mg
139
10 mg to 25 mg
269
25 mg to 50 mg
234
50 mg to 100 mg
306
100 mg to 250 mg
367
250 mg to 500 mg
314
500 mg to 1 g
352
over 1 g
81

Dose per serving from research

6 study groups in 3 studies say how much L-Methionine participants took a day.

These are the doses the studies gave. They are not a recommendation.

Most common: 25 mg/kg to 50 mg/kg and 50 mg/kg to 100 mg/kg, 50% of 6 study groups each.

Daily doseStudy groups
25 mg/kg to 50 mg/kg
3
50 mg/kg to 100 mg/kg
3

Commonly used together

4 of 7 study groups took L-Methionine with something else, but nothing that 3 or more different studies gave.

7 study groups

Study
Sulphydryl-containing agents and the prevention of duodenal ulcer relapse
1993 · MMSC · Smokers with previous symptomatic, endoscopy-proven duodenal ulceration that had healed
2 g1 year—
Impairment of endothelial functions by acute hyperhomocysteinemia and reversal by antioxidant vitamins
1999 · Oral methionine load · Healthy adults aged 25 to 45 years; 10 men and 10 women
100 mg/kg1 day20
Impairment of endothelial functions by acute hyperhomocysteinemia and reversal by antioxidant vitamins
1999 · Methionine load with antioxidant vitamins · Healthy adults aged 25 to 45 years; 10 men and 10 women
100 mg/kg1 day20
Assessment of pre- and post-methionine load homocysteine for prediction of recurrent stroke and coronary artery disease in the Vitamin Intervention for Stroke Prevention Trial
2008 · methionine loading test · Patients with non-disabling cerebral infarction, recruited within 120 days of the event and eligible based on screening homocysteine
100 mg/kg1 day2,124
Dietary serine and cystine attenuate the homocysteine-raising effect of dietary methionine: a randomized crossover trial in humans
2004 · Met · Healthy men
30 mg/kg1 day24
Dietary serine and cystine attenuate the homocysteine-raising effect of dietary methionine: a randomized crossover trial in humans
2004 · MetSer · Healthy men
30 mg/kg1 day24
Dietary serine and cystine attenuate the homocysteine-raising effect of dietary methionine: a randomized crossover trial in humans
2004 · MetCys · Healthy men
30 mg/kg1 day24