Best ingredients for libido

A cruciferous root grown in the Peruvian Andes, dried and milled into a powder used in libido, energy, and hormone-balance formulas.

Typical: 1,500–3,000 mg

The root of Asian ginseng, standardized to ginsenosides, used in energy, fatigue, and vitality products.

Typical: 200–400 mg

A root extract from a Southeast Asian shrub used in men's vitality, stress, and libido formulas.

Typical: 200–400 mg

A conditionally essential amino acid and the direct substrate for nitric-oxide synthase.

Typical: 3–6 g

A generic seed extract of fenugreek, a legume used both as a spice and in traditional medicine.

Typical: 500–600 mg

A fruit and aerial-part extract standardized to steroidal saponins, marketed heavily for testosterone and muscle building.

Typical: 500–1,500 mg

Horny goat weed is the common name for several Epimedium species used in traditional Chinese herbalism.

Typical: 500–1,000 mg

The D-isomer of aspartic acid, involved in signaling within the hypothalamus and testes.

Typical: 3 g

A branded fenugreek seed extract standardized to 50% fenusides, a saponin glycoside fraction, developed for men's vitality products.

Typical: 600 mg

A seed extract of velvet bean standardized to L-DOPA, the direct precursor of dopamine, used in mood, motivation, and men's vitality formulas.

Typical: 250–500 mg

Fadogia agrestis is a Nigerian shrub whose stem has a folk reputation as an aphrodisiac.