Testosterone Phenylpropionate 10ml/100mg – Magnus
- Mild muscle “dryness” – balances rapid onset with a 4‑5 day activity window.
- Reduced injection frequency – 2–3 injections per week, ideal for athletes.
- Enhanced protein synthesis – supports nitrogen retention during training cycles.
- Minimal fluid retention – less edema than longer‑acting esters.
Magnus Testosterone Phenylpropionate 10ml/100mg
Key Features:
- Testosterone ester with phenylpropionate – intermediate release profile (4–5 days)
- Suitable for athletes seeking a balance between potency and injection frequency
- Reported lower fluid retention compared to cypionate or enanthate
- Available in 10 ml vials, each containing 100 mg of testosterone phenylpropionate
Administration Guidelines
Dosage and Frequency:
- Typical dosing: 50–150 mg per injection (1–2 vial equivalents)
- Recommended schedule: every 3–4 days, or approximately twice a week for optimal serum levels
- Adjustments may be necessary based on individual response and cycling goals
Injection Technique:
- Use a sterile syringe and needle (22–25 G) for intramuscular injection
- Common sites: gluteal muscle, deltoid, or vastus lateralis
- Rotate injection sites to minimize local irritation and reduce risk of abscess formation
- Maintain aseptic technique: clean skin with alcohol swab before injection
Side Effects & Considerations
Common Adverse Events:
- Injection site soreness, redness, or swelling (potential abscess if not managed properly)
- Fluid retention and gynecomastia due to estrogen conversion (aromatization)
- Possible hair loss on scalp, prostate enlargement from dihydrotestosterone activity
- Increased risk of cardiovascular strain with high doses or prolonged use
Monitoring Recommendations:
- Regular blood work: testosterone, estradiol, PSA (prostate‑specific antigen), lipid panel
- Track water retention and any breast tissue changes weekly
- Adjust dose or add aromatase inhibitor if estrogenic side effects become problematic
Product Comparison Table
| Feature | Testosterone Phenylpropionate (Magnus) | Testosterone Cypionate |
|---|---|---|
| Elimination Half‑Life | 4–5 days | 8–10 days |
| Typical Injection Frequency | Every 3–4 days (≈2×/week) | Once a week or every other week |
| Fluid Retention | Lower | Higher |
| “Dry” Muscle Appearance | Comparable to propionate | Less dry, more hydrated |
| Common Side Effects | Injection site soreness; estrogenic effects; DHT‑related issues | Similar but often more pronounced due to longer half‑life |
This product is sold by PoseidonRX, a reputable online drug store that sources high‑quality testosterone preparations for athletes and bodybuilders seeking precise control over their anabolic regimen.


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