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Phenylalanine Drug Interactions

Phenylalanine Interactions Explained

The following sections explain in detail the potentially negative interactions that can occur when phenylalanine is combined with any of the drugs listed above.
Antipsychotic medications can cause a movement disorder known as tardive dyskinesia. Phenylalanine may increase the risk of tardive dyskinesia or may make this condition worse. If you take an antipsychotic medication, do not take phenylalanine supplements without your healthcare provider's approval and supervision.
Products Containing Levodopa (Parcopa, Sinemet, Sinemet CR, Stalevo)
Combining phenylalanine with levodopa in people with Parkinson's disease may worsen tremors, rigidity, and other side effects or symptoms. If you take levodopa, check with your healthcare provider before taking phenylalanine supplements.
Monoamine Oxidase Inhibitors (MAOIs)
Theoretically, combining an MAOI with phenylalanine supplementation could increase the risk of dangerous MAOI-related symptoms. If you take an MAOI medication, do not take phenylalanine supplements unless your healthcare provider specifically recommends that you do so.

Final Thoughts on Phenylalanine Drug Interactions

It is possible that not every drug interaction was discussed in this article. Therefore, you should talk with your pharmacist or healthcare provider about the phenylalanine drug interactions that may apply to you.
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