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by Bratman S

Natural and Alternative Treatment Study Report: L-carnitine and Male Infertility

IMAGE Growing evidence suggests that various forms of the supplement L-carnitine may improve sperm function and thereby aid male infertility .
For example, in one double-blind study, 60 men with abnormal sperm function were given either placebo or a mixture of two forms of carnitine (L-carnitine and acetyl-L-carnitine) for six months. The results showed significant improvement in sperm function in the treated group as compared to the placebo group. Another study found benefits with L-carnitine taken alone.
An article published in 2007 reviewed all the current evidence regarding carnitine therapy for male infertility. Its conclusion: L-carnitine, alone or in combination with acetyl-L-carnitine, may enhance sperm function and thereby improve male fertility.
For more information, including dosage and safety issues, see the full carnitine article.

References

Zhou X, Liu F, Zhai S. Effect of L-carnitine and/or L-acetyl-carnitine in nutrition treatment for male infertility: a systematic review. Asia Pac J Clin Nutr . 2007;16 Suppl:383-90.