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Minerva Ginecol. 2008 Oct;60(5):363-8.

[Treatment of hyperandrogenism and hyperinsulinemia in PCOS patients with essential amino acids. A pilot clinical study].

[Article in Italian]

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  • 1A.G.UN.CO. Centro di Ostetricia e Ginecologia Roma, Italia.



Women with polycystic ovary syndrome (PCOS) report frequently hyperinsulinemia. The aim of this study was to evaluate the effects of 16-weeks therapy with essential amino acids supplements on metabolic and clinical indices in PCOS.


For this study ten women with PCOS and fasting hyperinsulinemia were enrolled. The study comprised 16 weeks of therapy with oral essential amino acids (Aminopril, NAMED, Milan, Italy) administered 4 g twice per day. Body mass index, hirsutism score, serum levels of total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, triglycerides, apolipoprotein B, lipoprotein(a), serum adrenal and ovarian androgens, fasting glucose and insulin concentrations, T, DHEAS, gonadotropins, and sex hormone-binding globulin (SHBG), were assessed before and after treatment with essential amino acids.


A significant decrease in fasting insulin, total T, luteneizing hormone and follicle-stimulating hormone was reported after amino acids therapy and increase in SHBG, leading to a decrease in the free T index. In addition, a significant reduction in hirsutism score was reported. No significant decrease in mean body mass index and in lipid pattern was reported.


A decline of insulin after treatment with essential amino acids was observed in women with PCOS as well as total and bioavailable T, leading to significant improvement of clinical symptoms of hyperandrogenism.

[PubMed - indexed for MEDLINE]
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