Testosterone Enanthate 300 (Supra Test 300) with Ethyl Oleate (EO)
Primary Uses
Testosterone Replacement Therapy (TRT):
Prescribed for men with clinically low testosterone levels due to:
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Primary hypogonadism: Testicular conditions such as Klinefelter syndrome
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Secondary hypogonadism: Issues originating from the hypothalamus or pituitary gland
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Delayed puberty: Helps initiate puberty in adolescent males who are not producing enough testosterone
Additional/Off-Label Applications:
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Support for muscle mass and strength development in athletic settings (non-medical use)
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Treatment of select breast cancer types in females
How It Works
Testosterone Enanthate is a long-acting synthetic testosterone ester. It supplements the body when natural testosterone production is too low. Once absorbed, it assists with:
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Muscle and strength development
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Bone density and growth
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Red blood cell production
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Sperm and sexual function
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Formation of male secondary characteristics such as deeper voice and facial hair
This EO-based formula improves solubility and helps ensure smooth injections.
Administration
Route: Intramuscular injection, typically in the gluteal muscle. This may be administered by a clinician or under their guidance.
Frequency: Most protocols involve injections every 1–4 weeks, depending on how the body responds.
Dosage
Dosing varies based on medical evaluation.
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Initial dosing: Often between 50–200 mg every 1–4 weeks
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Adjustments: A healthcare provider will track testosterone levels and modify dosing as needed
Injection Site Care & Technique
To support safe and comfortable injections:
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Warm the vial slightly before drawing
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Use a sterile 25G–27G syringe and needle
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Inject slowly to limit muscle irritation
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Gently massage the area after administration
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Alternate injection sites routinely
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Avoid any swollen or previously irritated areas
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Store the vial upright and avoid shaking it unnecessarily
Precautions
Testosterone therapy can produce serious adverse effects, including:
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Increased risk of heart attack, stroke, or heart failure
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Liver strain or liver damage
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Worsening sleep apnea
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Enlargement of the prostate
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Blood clot formation
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Mood alterations such as irritability or aggression
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Gynecomastia
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Testicular shrinkage
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Acne and potential hair thinning
Do not use if you:
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Have prostate or breast cancer
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Have severe liver, kidney, or cardiovascular disease
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Have untreated sleep apnea
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Are pregnant or breastfeeding
Prescription-only medication. Use only under the supervision of a licensed medical professional.





