Phenylalanine can cause tardive dyskinesia in people taking antipsychotic medicines.
If taken with certain antidepressants, this supplement could lead to:
Phenylalanine might also:
It may also affect how your body breaks down other drugs and supplements. And use with caution if you are taking a monoamine oxidase inhibitor (MAOI) drug and several other classes of medications; talk to your doctor or pharmacist about this.
- Hypomania
- Constipation
- Insomnia
- Higher blood pressure
- Keep drugs for high blood pressure from working properly
- Increase the effect of sedatives