Injectable anabolic steroids are synthetic drugs designed to mimic the effects of the male sex hormone testosterone. They are often used medically to treat conditions like delayed puberty, certain types of impotence, and body wasting in patients with diseases such as AIDS. However, they are also widely misused for performance enhancement and muscle growth by athletes and bodybuilders, which can lead to serious health issues. It is crucial to note that the use of anabolic steroids without a prescription is illegal in many countries and strongly advised against by the medical community due to their potential harmful side effects.

Here are some of the most popular injectable anabolic steroids, keeping in mind the associated risks and the importance of informed, health-conscious decision-making:

1.  Testosterone: Available in several ester forms like enanthate, cypionate, and propionate, it's often used as a base for steroid cycles.

2.  Nandrolone Decanoate (Deca Durabolin): Known for its ability to increase muscle mass and strength with less liver toxicity compared to other steroids.

3.  Boldenone Undecylenate (Equipoise): Popular for its quality muscle gain and minimal water retention.

4.  Trenbolone: Available in different forms such as acetate and enanthate, it is known for its potent muscle-building and fat-burning properties but also has a higher risk of side effects.

5. Stanozolol (Winstrol): Though it comes in both oral and injectable forms, the injectable version is often preferred for its purported lower liver toxicity.

6. Methenolone Enanthate (Primobolan): Considered one of the safer steroids, often used for cutting cycles to maintain muscle mass while losing fat.

7. Drostanolone Propionate (Masteron): Known for its ability to provide a hardening effect on muscles, often used by bodybuilders preparing for competitions.

8. Sustanon: A mix of four testosterone esters, designed to provide a sustained-release effect, allowing for less frequent injections.