Injectable steroids generally fall into two main categories based on their function: corticosteroids, which are anti-inflammatory medications used in medical treatment, and anabolic-androgenic steroids (AAS), which are synthetic hormones used (often illicitly) for muscle growth and performance enhancement

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Injectable Corticosteroids

Corticosteroids are anti-inflammatory drugs that mimic the effects of cortisol, a hormone naturally produced by the adrenal glands. They are used by healthcare professionals to treat a range of conditions involving inflammation, such as arthritis, sciatica, and muscle pain. 

Common types of injectable corticosteroids include:

• Hydrocortisone: A common steroid often used for joint pain and swelling.
• Triamcinolone: Used for treating joint pain and other inflammatory conditions.
• Methylprednisolone: Frequently used in epidural injections for back pain and for musculoskeletal conditions.
• Dexamethasone: A potent, longer-acting steroid used for various inflammatory conditions.
• Betamethasone: Often available as a combination of fast and slow-acting forms (e.g., Celestone Soluspan) to provide both immediate and lasting relief. 

These are typically administered as a local injection into a joint (intra-articular), muscle (intramuscular), or the spine (epidural), and generally provide relief for several weeks to months

Injectable Anabolic-Androgenic Steroids (AAS) 

Anabolic steroids are synthetic variants of the male sex hormone testosterone. They are primarily used to promote muscle growth, enhance athletic performance, and improve physical appearance. While they have legitimate medical uses for treating conditions like delayed puberty or muscle wasting diseases, they are frequently misused at high doses. 

Common types of injectable anabolic steroids include:

• Testosterone (e.g., Cypionate, Enanthate, Propionate, Undecanoate forms)
• Nandrolone (e.g., Decanoate, Phenpropionate forms)
• Trenbolone (e.g., Acetate form)
• Boldenone (e.g., Undecylenate form)
• Methenolone (e.g., Enanthate form) 

Anabolic steroids carry significant health risks, especially with long-term misuse, and their use without a prescription is illegal in many places.