The following is a side effect profile developed from approximately 50 patient-years of data compiled from clinics all over the country by NeuroResearch Clinics, Inc. The following results were obtained from people 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.
Marty Hinz, MD, who has looked at over 1,000,000 patient days of treatment data since 1995 from over 500 clinics states that “amino acid precursors are safe when used with all drugs, including MAO (monoamine oxidase) inhibitors.” However, since the simultaneous administration of amino acid precursors with prescription medications help the drugs to perform better, they can also cause the side effects of the prescription drugs to be displayed to a greater extent. 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 acids, as the amino acids are addressing the inherent underlying imbalance.
In regards to pregnancy, there is nothing in the literature indicating that the amino acid precursors or cofactors should cause any concern if they are certified for purity; however, there is nothing in the literature indicating studies have been performed indicating they are safe during pregnancy either. In light of this, it is recommended that amino acid precursors not be used in the first trimester of pregnancy without first consulting your doctor, although no studies indicate this is harmful to the mother or the fetus.