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Description
While your body produces some on its own, levels can drop due to aging, stress, diet, or certain medications
2022 Cochrane Review: Six RCTs in 1,089 men with subfertility taking 1,0003,000 mg/day carnitine for 8 weeks to 6 months found increased sperm motility and concentration at some timepoints but NO effect on live birth or pregnancy rates [3][47]
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Present Knowledge in Nutrition, 11th ed
doi: 10.1097/MNH.0000000000000147
An intervention study compared the effect of L-carnitine supplementation (2 g/day for 12 weeks) on plasma and skeletal muscle carnitine concentrations and physical performance between 16 vegetarian and 8 omnivorous male participants (131)
