Using a single amino acid
supplement may lead to negative nitrogen balance. This can lessen how well your
metabolism works. It can also make your kidneys work harder. In children, taking single
amino acid supplements may also cause growth problems.
You should not take high doses of
single amino acids for long periods of time.
Methionine can cause:
- Low blood pressure
It may also make liver problems
worse. Talk to your healthcare provider before using it if you have severe liver
People with bipolar disorder should not take methionine supplements.
Women who are pregnant or
breastfeeding shouldn’t use methionine supplements.
Toxicity of methionine is rare.
People with homocystinuria type I,
an inherited disease, shouldn’t use methionine supplements.
If you take methionine supplements
without enough folic acid, vitamin B-6, and vitamin B-12, it can increase the conversion
of methionine to homocysteine. This may increase your risk for heart disease.