The following is a side effect profile developed from approximately 50 patient-years of data based treatment in hand at NeuroResearch Clinics, Inc. The following results were obtained from patients taking only amino acids with no prescription drugs:

Dry mouth —- 34 (2.1%)
Insomnia —— 14 (0.9%)
Headache —– 12 (0.7%)
Nausea ——– 10 (0.6%)
Dizziness ——- 6 (0.4%)
Constipation — 6 (0.4%)

All other side effects were reported at a rate of less than 1 in 500 visits (0.02%). No irreversible side effects were noted.

Amino acid precursors are safe to administer with any prescription drug, but amino acid precursors can also cause the side effects of the prescription drugs to be displayed. Any side effect associated with the drug can be triggered.  When drug side effects occur, it is necessary to manage the situation by working with your prescribing physician to help reduce the unwanted side effects; this generally entails decreasing or stopping the drug not the amino acid.

With regards to pregnancy there is nothing in the literature indicating that the amino acid precursors are a problem. Nor is there anything in the literature indicating studies have been performed indicating they are safe. In this light it is recommended that amino acid precursors not be used in the first trimester of pregnancy, although no studies indicate this is harmful to the mother or the fetus.