Injectable steroids are injected into muscle tissue, not into the veins. They are slowly released from the muscles into the rest of the body, and may be detectable for months after last use. Injectable steroids can be oil-based or water-based. Injectable anabolic steroids which are oil-based have longer half-life than water-based steroids. Both steroid types have much longer half-lives than oral anabolic steroids. And this is proving to be a drawback for injectables as they have high probability of being detected in drug screening since their clearance times tend to be longer than orals. Athletes resolve this problem by using injectable testosterone early in the cycle then switch to orals when approaching the end of the cycle and drug testing is imminent.
All anabolic steroids have a tendency to reduce HDL (good) cholesterol and increase LDL (bad) cholesterol. The relative impact of an anabolic/androgenic steroid on serum lipids is dependant on the dose, route of administration (oral vs. injectable) type of steroid (aromatizable or non-aromatizable) and level of resistance to hepatic metabolism. With regards to nandrolone at a dose of 600mg per week over 10 weeks demonstrated 26% reduction in HDL cholesterol levels. This suppression is slightly greater than an equal dose of testosterone over an equal period. In other words it shows a slightly more negative impact on HDL/LDL ratio with nandrolone than with testosterone cypionate. It’s always recommended to accompany the use of this product with a low saturated fat diet and a cardiovascular exercise program.