Everlast l carnitine size 60 tablets servings 30 what is everlast l carnitine and how does it work food supplement containing l carnitine 500mg as l carnitine l tartrate l carnitine is an amino acid a building block of protein that is naturally produced in the body everlast l carnitine is used predominately by the sports enthusiast the product is suitable for vegetarians and vegans manufactured in the uk to gmp standards directions for use take 2 tablets