This Zentech Sus 250 was part of a Promo from teamroids. Oil was awesome, hardly any pip or stiffness. Strength and muscle was retained while running in deficit! Oil pulled smooth and injected awesome. First time user of this Zentech and it was definitely great gear. I always use sus, Many different brands and I could tell if it was up to par. No negative impact on me in any way, just all the positives. Definitely recommend generous source and lab! Thanks for the try.