Bulbine natalensis is a herbal extract originating in South Africa with a long traditional history of use as an aphrodisiac. It contains a number of active constituents which includes saponins and alkaloids amongst others. It has also been used historically to treat a number of skin ailments such as wounds and burns. Several studies in rats have shown that bulbine natalensis is effective at raising testosterone and luteinizing hormone levels and associated sexual function. This is the quality for which it is included in testosterone booster supplements and similar other supplements designed to treat sexual dysfunction and low libido.
Effective doses of bulbine natalensis are thought to be in the vicinity of 500-700mg for humans, with beneficial effects noticeable within 7 days of supplementation. Bulbine natalensis is often found combined with other popular testosterone boosting hearbal extracts such as Tribulus terrestris and Fenugreek. Bulbine is commonly advertised and sold in Australia as Formulated Supplementary Sports Foods.