Amazon.com: Nutricost Acetyl L Carnitine (ALCAR) 500mg, 180 Capsules, 180 Servings Non GMO and Gluten Free, 1 Capsule per Serving : Everything Else Did You Know? Some people report a fishy smell after supplementing with L carnitine. This happens because certain gut bacteria convert carnitine to trimethylamine, a malodorous compound found in rotting fish. Acetyl L Carnitine Allergy: Symptoms and Treatment Options (2026) Wyndly Chronic oral administration of L carnitine induces testicular injury: in vivo evidence International Urology and Nephrology Springer Nature Link Maxx Cartn Maxx Active maxx active supplement, maxx active cosmetics, maxx active vitamins, maxx active dietary supplement, maxxactive When to take L carnitine: Dosage, forms, and side effects