Phenylalanine   Uses of this Supplement Depression Multiple Sclerosis Osteoarthritis Parkinson's Disease Rheumatoid Arthritis   Supplements with Similar Uses View List by Use   Drugs that Interact Summary Baclofen Levodopa Levodopa-containing Medications   Supplements with Similar Side Effects View List by Side Effect   Supplements with Similar Warnings View List by Warning   Learn More About Nutrition	Look Up > Supplements > Phenylalanine > Warnings Supplements with Similar Warnings as Phenylalanine Below is a list of conditions where patients are warned against taking this supplement. Under each condition is listed other supplements with similar warnings.   pregnancy Bromelain Cartilage Docosahexaenoic Acid (DHA) Eicosapentaenoic Acid (EPA) Melatonin S-Adenosylmethionine (SAMe) Sulfur Vitamin A (Retinol) Vitamin B6 (Pyridoxine) Vitamin C (Ascorbic Acid) Vitamin K