is l'carnitine safe LCarnitine Safety High Doses What Is L-Carnitine: Benefits, Side
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Give your body time

Increases in walking distance in patients with peripheral vascular disease treated with L-carnitine: a double-blind, cross-over study
According to the OSL risk assessment approach, intakes up to 2000 mg/day of LC equivalents for chronic supplementation provide high evidence of safety, and this amount is designated as the observed safe level (OSL)

J Strength.Cond.Res

[Evaluation of efficacy of propionyl-L-carnitine in chronic oral administration on cardiac muscle efficiency, on tolerance to exercise and on life quality of patients with chronic cardiac failure
Is it safe to use while Im pregnant or breastfeeding