Turmeric at food amounts is safe, but concentrated supplements can rarely cause liver damage
That being said, if you have been diagnosed with a deficiency and prescribed a fairly high dose of carnitine, you should stick to your doctors recommendations
Sajdel-Sulkowska EM, Xu M, McGinnis W, Koibuchi N (2011) Brain Region-Specific Changes in Oxidative Stress and Neurotrophin Levels in Autism Spectrum Disorders (ASD)
A randomized, double-blind, placebo-controlled trial in 28 older women (ages, 65-70 years) found no effect of L-carnitine supplementation (1.5 g/day for 24 weeks) on serum pro-inflammatory cytokine concentrations, body mass and composition (lean [fat-free] mass and skeletal muscle mass), or measures of skeletal muscle strength (123)

Product Overview Form : Injectable Liquid (5 ampoules in a box, 5 ml per ampoule) Dosage : Typically dose ranges from 200 to 600 mg per injection, once or twice a week as an initial dose Typical Cycle Duration : 4-8 weeks Average Cost: $59.99 Key Benefits : Lipid metabolism, improves heart and cognitive health, reduces cholesterol levels, improves physical performance Side Effects: Diarrhea, stomach cramps, and nausea may occur Best Stack: Stacks well with Creatine for muscle mass and strength User Experience : Many users reported better energy levels and mental clarity after 2 weeks of use Recommended Dosage and Cycle Length Heres a generally recommended dosage for injectable L-Carnitine: Standard dose : 500 mg to 1,000 mg per injection Frequency : 2 to 3 times per week, depending on your goals and tolerance Injection type : Intramuscular for deeper absorption or subcutaneous (in the stomach area) for more localized use For beginners, start with 500 mg, once or twice a week, then gradually increase based on how your body responds

Gibson, J