What are testosterone injections?
Testosterone injections are a prescription treatment for men with low testosterone (low T). The medicine is injected on a regular schedule to bring your levels back to a normal range, which can help with energy, sex drive, mood, and muscle. Injections are the most common and most cost-effective form of testosterone replacement therapy (TRT).
How the injections work: intramuscular vs. subcutaneous
Most testosterone is given as testosterone cypionate, a long-acting form. It can be injected two ways:
Intramuscular (IM)
— into the muscle, usually the thigh or glute.
Subcutaneous (subQ)
— into the fat just under the skin, using a smaller needle. Many men find subQ easier and less painful.
Both work. Dr. Fuzayloff decides which is right for you and sets your dose based on your labs and symptoms — not a fixed protocol.
For how much testosterone per week, see our TRT dosage guide.