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napsgear
genezapharmateuticals
domestic-supply
puritysourcelabs
Research Chemical SciencesUGFREAKeudomestic
napsgeargenezapharmateuticals domestic-supplypuritysourcelabsResearch Chemical SciencesUGFREAKeudomestic

l-tryptophan

  1. N

    L this and L that supplements

    what does it mean when you see a supplement ingredient with the word L in front of it? I see things like L-Arginin, l-citrulline, L-tryptophan, L-Carnitine, etc. the people on social media act like these products actually do something in our bodies so they try to sell it to us. Do they...
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