If you have been diagnosed with hyperhomocysteinemia, a condition that is characterized by large levels of homocysteine in your bloodstream, you may be prescribed Metanx, a Vitamin Complex. Metanx contains L-Methylfolate and vitamins B6 and B12.

Discuss taking Metanx with your doctor if you are pregnant or breast feeding. Your doctor will explain the benefits and the risks that Metanx will have on you and your baby. Metanx may cause side effects of drowsiness, mild diarrhea, swelling of the body, numbness or tingling.