Male enhancement pills typically target production of nitric oxide, testosterone, and growth hormone in order to increase libido and sexual performance in men 3. Nitric oxide (NO) is the free form gas that expands blood vessels, making erections possible. With more NO available to the body, sexual function increases. Testosterone and growth hormone are two hormones that are intimately involved with the male libido. By taking substances that increase NO, testosterone and growth hormone, men may enhance sexual function, stamina, libido and performance.

Extenze

Extenze is a libido-enhancing product that combines potent herbs to improve sexual function, optimize hormonal levels and promote blood flow. DHEA and pregnenolone are potent legal prohormones that can increase testosterone. Tribulus, yohimbe, horny goat weed, deer antler extract, stinging nettle, muira puama and damiana may naturally support healthy testosterone levels 3. Arginine and cnidium monnier may help to support nitric oxide production, increasing blood flow to the penis. Besides boosting libido and sexual function, Extenze also claims to increase the length and girth of the penis.

PowerFULL

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First introduced as a growth hormone-boosting supplement, USP Labs' PowerFULL has become popular for supporting libido, particularly in aging males. A single dose of PowerFULL may increase growth hormone production by up to 221 percent. More growth hormone means more vitality, higher energy levels and a significant boost in libido. In addition, chlorophytum borivilianum can increase free testosterone in the blood. Users report better sleep and huge increases in sexual function, with no side effects, according to USP Labs.

Ejaculoid

Goliath Labs's Ejaculoid is a top-selling sexual health product, according to VitaminShoppe.com. The Ejaculoid formula claims to increase libido, sexual pleasure and semen volume. The powerful ingredients target both nitric oxide production and optimal testosterone levels 3. Maca root, tribulus terrestris, GABA and longjack work on hormonal stimulus, while horny goat weed, yohimbe and cnidium monnieri help to increase blood flow to the extremities. Users report huge increases in libido, as well as youthful feelings of vitality and energy.

Steel Libido

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Known for their potent herbal formulas, Irwin Naturals offers products with a fast liquid delivery system . Steel Libido may boost sexual performance and desire by giving blood vessel support to increase blood flow as well as targeted nutraceuticals and traditional botanicals for optimizing hormone levels. Arginine, horny goat weed and NADH, a form of niacin, increase blood flow to the extremities by optimizing nitric oxide production. DHEA, horny goat weed, tribulus, maca and CDP choline maximize testosterone and growth hormone levels to increase libido naturally 3. Take up to four caps two hours before activity for best results.

Amidren

Hormone production slows down as we age, decreasing libido. Amidren was formulated by anti-aging and endocrine specialists to counter this effect. The hormonal support complex uses tribulus, fenugreek and longjack to naturally increase testosterone levels 3. DIM, stinging nettle and chrysin help to decrease the conversion of testosterone to estrogen, which can lead to a loss of libido and lower male hormone levels 3. By addressing the five stages of male hormone modulation, Amidren helps increase libido and improve sexual function. Amidren may increase testosterone levels, increase muscle mass, decrease body fat and increase sexual drive and performance 3.