Knowledge Content
The frequency of injection of Testosterone Cypionate depends on the purpose of treatment, dosage and doctor's advice.
### 1. **Drug properties and half-life**
Testosterone propionate is a long-acting testosterone ester with a half-life of about **8-12 days**, which means that it is slowly broken down and cleared from the body, so frequent injections are usually not required.
### 2. **Injection frequency recommendation**
In general, the injection frequency is:
- **Once a week**: Suitable for most patients undergoing testosterone replacement therapy (TRT). This frequency can maintain a relatively stable serum testosterone level.
- **Twice a week**: Suitable for patients who pursue more stable blood testosterone concentrations to reduce the side effects of hormone fluctuations (such as mood changes, energy fluctuations, etc.).
### 3. **Adjust according to personal needs**
The specific injection frequency should be adjusted according to the following factors:
- **Treatment goal**: Testosterone replacement therapy (TRT) vs. physical enhancement (non-medical use).
- **Dose**: Higher doses may require more frequent injections to reduce peak and trough differences.
- **Side effects**: If the patient feels that the longer intervals between injections cause mood swings or lack of energy, the doctor may recommend more frequent injections.
### 4. **Follow the doctor's advice**
Regardless of the injection frequency, patients should strictly follow the doctor's instructions and avoid adjusting the dose or frequency without authorization to avoid the following side effects:
- Acne, hair loss
- Testicular atrophy
- Polycythemia
- Increased cardiovascular risk
### Summary
For most patients, 1-2 injections of testosterone propionate per week are already effective in maintaining stable hormone levels in the body. The final decision on frequency and dosage should be based on the advice of a professional doctor and personal needs.
