L-Phenylalanine 500 mg


"Phenylalanine is an essential amino acid.
Amino acids are the building blocks of protein and help fuel skeletal muscles.*
Each capsule supplies 500 mg of free-form L-Phenylalanine."
Product: L-Phenylalanine 500 mg
Brand: GNC (More Products)
Size: 30 Capsules
Dosage: 1 capsule twice daily
Retail: $6.99
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1 Customer Reviews


L-Phenylalanine
by Sandra

I was on this product for approximately two weeks. It did nothing to help with energy and I am not sure the advertised claims could be back up. It did however have the awful side effect of causing constant gas problems. I would not take this supplement again or recommend it to family or friends, especially somebody with a sensitive stomach.