Lepidium meyenii (Maca) is traditionally employed in the Andean region for its supposed properties in improving fertility. The aim of this study was to determine the effect of subacute oral administration of hexanic, methanolic and chloroformic extracts of Maca root on sexual performance in inexperienced male rats. The following sexual performance parameters were evaluated: 1st mount, 1st intromission, ejaculation and post-ejaculatory latencies, intercopulatory interval and copulatory efficacy. All the tested fractions significantly decreased intromission latency and intercopulatory interval and increased intromission frequency and copulatory efficacy (P < 0.05) as compared to controls. Hexanic and methanolic extracts were able to increase mount frequency (MF), while only hexanic fraction significantly improved mount latency (ML) (P=0.038). Globally, only the hexanic fraction significantly improved the majority of the sexual parameters measured. Sub-acute oral administration of hexanic Maca extract improved sexual performance parameters in sexually inexperienced male rats most effectively.
"Cicero et al. demonstrated that sexual behavioural activity as well as locomotor activity was increased in rats treated with pulverised maca root orally . In a further study, the same group has demonstrated that the hexanic extract of maca had more effect on sexual behaviour of rats than the methanolic and chloroformic extracts . Lentz et al. measured ejaculatory and mounting behaviour and postejaculatory intervals in rats treated with maca orally for 30 days. "
[Show abstract][Hide abstract] ABSTRACT: Introduction:
The use of unlicensed food and herbal supplements to enhance sexual functions is drastically increasing. This phenomenon, combined with the availability of these products over the Internet, represents a challenge from a clinical and a public health perspective.
A comprehensive multilingual assessment of websites, drug fora, and other online resources was carried out between February and July 2013 with exploratory qualitative searches including 203 websites. Additional searches were conducted using the Global Public Health Intelligence Network (GPHIN). Once the active constitutes of the products were identified, a comprehensive literature search was carried out using PsycInfo and PubMed.
The most common sexual enhancement products available on the Internet were identified. Their active ingredients included yohimbine, maca, horny goat weed and Ginkgo biloba. These four substances were reported with the occurrence of adverse events and the induction of psychological symptoms, such as mood changes, anxiety, and hallucinations as well as addictive behaviours.
Uncontrolled availability of sexual enhancement products that contain potentially harmful substances is a major public health concern. The possible impact on population health, particularly among subjects with psychiatric disorders, usually at risk for sexual dysfunction, may be significant. This new trend needs to be extensively studied and monitored.
BioMed Research International 06/2014; 2014(5). DOI:10.1155/2014/841798 · 2.71 Impact Factor
"The mechanism by which Maca Negro modulates the release of testosterone is not clear. One work has been done to show how Maca Negro interacts with its target in vivo and in vitro. Presently, it is not clear whether the effects of Maca Negro are due to direct activities of its components on selected cells or indirectly on the components of Fagara tessmannii. "
[Show abstract][Hide abstract] ABSTRACT: Lepidium meyenii is a plant, which has been used in folk medicine to treat infertility and to increase sexual desire. However, few reports have investigated the administration of this plant with other plants having the same properties.
The present investigation was designed to evaluate whether the combination of Lepidium meyenii and Fagara tessmannii can improve spermatogenesis and testosterone level in rats.
Twenty male rats were treated daily for 2 weeks with the hydroalcoholic extract of Fagara tessmannii and Lepidium meyenii (Fag + MN) as follow: (vehicle), (0.01 g + 0.5 mg), (0.1 g + 5 mg) and (1 g+ 50 mg)/kg BW.
At doses Fag 0.01 g/MN 0.5 mg and Fag 0.1 g/MN 5 mg, the weight of seminal vesicle, prostate, and testis significantly decreased (P < 0.05) while at dose Fag 1 g/MN 50 mg, the weight of epididymis and testis significantly increased (P < 0.05) when compared to the control. We noticed a significant increase of the number of spermatids/test (P < 0.05), epididymis sperm count (P < 0.05), and DSP/test of the rats at dose Fag 1 g/MN 50 mg while at dose Fag 0.01 g/MN 0.5 mg and Fag 0.1 g/MN 5 mg, sperm count was reduced in male organs, particularly in vas deferens (P < 0.05) and epididymis (P < 0.001). The serum testosterone concentration significantly decreased (P < 0.05) at lowest dose Fag 0.01 g/MN 0.5 mg. However, at highest dose Fag 1 g/MN 50 mg, the serum testosterone concentration increased significantly (P < 0.05). The length of stage VII-VIII and IX-I of the seminiferous tubule significantly (P < 0.05) increased while the length of stage II-VI significantly (P < 0.05) decreased.
The results indicated that the combination of Lepidium meyenii (Black Maca) with Fagara tessmannii can improve male reproductive organs activities.
"Maca has been described to improve sexual behavior in experimental animals [13, 22, 23], although conflictive results may be observed . Traditionally maca has been referred to as a plant to improve fertility  and as an energizer . "
[Show abstract][Hide abstract] ABSTRACT: Lepidium meyenii
(maca) is a Peruvian plant of the Brassicaceae family cultivated for more than 2000 years, which grows exclusively in the central Andes between 4000 and 4500 m altitude. Maca is used as a food supplement and also for its medicinal properties described traditionally. Since the 90s of the XX century, an increasing interest in products from maca has been observed in many parts of the world. In the last decade, exportation of maca from Peru has increased from 1,415,000 USD in 2001 to USD 6,170,000 USD in 2010. Experimental scientific evidence showed that maca has nutritional, energizer, and fertility-enhancer properties, and it acts on sexual dysfunctions, osteoporosis, benign prostatic hyperplasia, memory and learning, and protects skin against ultraviolet radiation. Clinical trials showed efficacy of maca on sexual dysfunctions as well as increasing sperm count and motility. Maca is a plant with great potential as an adaptogen and appears to be promising as a nutraceutical in the prevention of several diseases.
Evidence-based Complementary and Alternative Medicine 01/2012; 2012(1741-427X):193496. DOI:10.1155/2012/193496 · 1.88 Impact Factor
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