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 > SideEffects Supplements with Similar Side Effects as Phenylalanine Below is a list of side effects for this supplement along with supplements with similar side effects.   headaches Iron Sulfur Vitamin A (Retinol) Zinc hypertension Dehydroepiandrosterone (DHEA) Vanadium Vitamin E