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Is phenylalanine safe?

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Tell your doctor about any supplements you're taking, even if they're natural. That way, your doctor can check on any potential side effects or interactions with any medications.

The U.S. Food and Drug Administration (FDA) does regulate dietary supplements. But it treats them like food and not medicine. Unlike drug manufacturers, the supplement makers don’t have to show their products are safe or effective before they put them on the market.

SOURCES:

Natural Standard Professional Monograph: "Phenylalanine."

AltCareDex, "Phenylalanine."

American Academy of Dermatology: "Vitiligo."

March of Dimes: "PKU (Phenylketonuria)."

Natural Standard Bottom Line Monograph: "Phenylalanine."

University of Maryland Medical Center: "Phenylalanine."

Reviewed by Christine Mikstas on May 29, 2019

SOURCES:

Natural Standard Professional Monograph: "Phenylalanine."

AltCareDex, "Phenylalanine."

American Academy of Dermatology: "Vitiligo."

March of Dimes: "PKU (Phenylketonuria)."

Natural Standard Bottom Line Monograph: "Phenylalanine."

University of Maryland Medical Center: "Phenylalanine."

Reviewed by Christine Mikstas on May 29, 2019

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