Does l-carnitine work?

Overall Effectiveness Rating for L-Carnitine

The overall effectiveness rating for l-carnitine is 1 out of 3. This rating means there is little to no evidence l-carnitine does what it claims. Using this supplement will not lead to positive results.

Overall Confidence Rating for L-Carnitine

There is one study in the database on l-carnitine; the confidence rating is 20. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this rating is for l-carnitine as a whole. There are also individual ratings for the claims below.

Products Containing L-Carnitine

Products Containing L-Carnitine
Physique Series Fat Burner Stim-Free
Dissolvable Pre-Workout Packs
Primal Surge
Shred JYM
Full list of all 42 products containing L-Carnitine.

Individual Claims

The overall ratings above do no necessarily reflect each claim about l-carnitine. Individual claims can have higher or lower ratings. For example, some supplements may have a lot of backing for one claim, but be completely useless for another. Click on claims below for more information.

Performance Claims Effectiveness Rating Confidence Rating
decrease fatigue


Title of Study
Effects of Citric Acid and l-Carnitine on Physical Fatigue