Blue Star Nutraceuticals - Trib XD Pharmaceutical Grade Testosterone Support - 120 Capsules. Blue Star TRIBULUS is powered with clinically validated doses of pharmaceutical grade ingredients that crank up the body's natural testosterone and strength levels. Zinc + Magnesium + Vitamin B6. TRIBULUS contains a clinically validated ratio of zinc, magnesium, and vitamin B6 to help support not only performance, but improve deep restful sleep to help support recovery and lean muscle growth. What will you experience on TRIBULUS? Naturally Higher Levels of Testosterone Super-Charged Libido Prevention of Estrogen Spikes Increases in Strength and Power Improved Blood Flow and Hardening - Everywhere! BLUE STAR TRIBULUS CONTROL 10% INCREASE IN STRENGTH! TRIBULUS will naturally increase your levels of testosterone. Which will help increase your strength and power... not to mention, your libido! No Side Effects and no PCT Required TRIBULUS isn't a dangerous "pro-hormone" or "st...