Introduced at GNC in 2010, High T® was the first Natural Testosterone Booster on the market, pioneering the current $1B market category. It's no wonder High is considered "The OG" in the market. All High T® Natural Testosterone Boosters are scientifically formulated to naturally boost depleted testosterone and nitric oxide levels, leading to increased strength, stamina, energy, and libido. When used regularly, you will notice improved workouts, faster recover times, and better health & vitality in all parts of your life, High T® products are safe & effective for both men and women.