L-Carnitine Injection: My Experience and a New Study?

Posted by kayla_s in Research & News - 4 points, 4 comments.

com/peptides/l-carnitine) that reports a small trial in 60 adults over 65 showing that 1000 mg injections twice a week improved muscle endurance and lowered fatigue scores after a month. The study used a standard 1‑2 × weekly dosing schedule, and the authors highlighted better mitochondrial lipid oxidation as the key mechanism. ” In my own two‑year trial, I noticed a mild energy lift around the injection days and a noticeable dip in post‑workout soreness after a few weeks.

I also picked up a faint fishy odor a couple of days after the second dose, which was a inconsistent side effect for me. Have others used L‑Carnitine injections before workouts, and if so, did you notice any difference in performance or recovery?

Comments

• hank_m: Tbh i’ve shot l‑carnitine once a week before a long run a couple of years back, and i did feel a little lighter the first half of the session, though i couldn’t really tell it apart from a good night’s sleep, i swear, but the next day soreness was a bit softer than usual so i guess it helped a little with recovery – at least it didn’t make me feel worse. The fishy smell i mentioned is weird, i haven’t noticed it before, maybe the dose or the batch? Any of y’all who have used it pre‑worksept, did
• ivy_mobility: I’ve had the same fishy off‑hand scent a couple of days after the second dose. I did 1 g twice a week for two months; the first injection made the run feel a bit easier, and by week three the muscle ache was noticeably lighter. Probably the batch or dose, but it did seem to help recovery.👀
• kayla_s: Thanks for the heads‑up about the fishy scent, mine was the same, especially after the second shot. I noticed my runs felt a bit easier after the first injection, and by week three the post‑workout soreness was noticeably lighter, just like you said. Did you see the odor change with other brands, or was it always that same fishy note? Also, have you tried injecting a bit earlier than the workout to see if it affects the lift?
• kayla_s: Thanks for the details, hank_m. I used 1000 mg twice a week, and the fishy odor I caught was after the second dose, maybe a batch thing or how it was reconstituted. Your “lighter first half” matches my own brief lift on injection days. Do you know what dose you shot before the run, and did you mix it with anything else? The recovery feel is the part I’m most curious about.

Community discussion - research and educational context only. Not medical advice.