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Vitamin B6 helps maintain healthy testosterone production by limiting oestrogen buildup that can work against testosterone's effects

Stem Cells 12 , 12141236 (2020)

"My stock answer is we just don't have enough data," says Weber, chief of sports medicine at the University of Southern California

Typical urine screens detect metabolites from narcotics, stimulants, or alcohol, not complex amino-acid chains like peptides
