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Bodybuilding.com Signature Testosterone Booster

Testosterone is the hormone that regulates a man's sex drive, fat distribution, bone density, and muscle strength — but, unfortunately, it declines with age and increased stress. Keep your body in its prime with our Testosterone Booster, which combines natural, clinically studied ingredients shown to support healthy testosterone levels.*

Bodybuilding.com Signature Testosterone Booster bottle

KSM-66 Ashwagandha

This herb has been used in Ayurvedic medicine for its testosterone-boosting properties for hundreds of years.* KSM-66 goes through a special extraction process and has been clinically studied and shown to support increases in testosterone levels as well as exercise performance and strength.* Signature Testosterone Booster uses the clinically proven 600mg dose of this unique herb to provide maximum benefit.*

Fenugreek

Fenugreek is probably one of the most well-known herbs for testosterone support, and for good reason. There are multiple clinical studies linking supplementation with fenugreek to testosterone levels as well as exercise performance.* Watch out for non-standardized extracts: Signature Testosterone Booster’s is standardized to saponins, which are the naturally occurring compounds in fenugreek that are the “active” ingredient.

Bodybuilding.com Athlete

A signature is a promise. A symbol of your identity. Your mark on the world. In 1999, Bodybuilding.com was founded on a single promise: Trust. It’s who we are and it’s in our blood. Our Signature line is built on the same promise. Every product is no-BS, transparent, filler-free, and formulated with effective doses of research-backed ingredients you can trust. We create the highest quality supplements, so you can focus on leaving a mark of your own.

TOTAL TRANSPARENCY

Signature products are formulated with high quality ingredients at effective doses that we’re proud to share with you. We don’t hide anything in a “proprietary blend”, so you always know exactly what you’re putting into your body.

EFFECTIVE DOSES

An effective dose is the amount of an ingredient that has been shown to deliver results. Some supplement brands add a sprinkle of an ingredient just so they can say it’s in the product. Signature supplements always include enough to get the job done.

RESEARCH-BACKED INGREDIENTS

Trendy, flash-in-the-pan ingredients come and go. But time-tested, gym-proven ingredients are what you need to help you achieve your fitness goals. That’s what you’ll find in Signature products because that’s what works.

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Bodybuilding.com Signature