Testosterone Phenylpropionate is an esterified form of testosterone that features a moderate release time, providing a steady and sustained effect without the need for very frequent injections. It acts faster than longer esters like enanthate or cypionate but lasts longer than propionate, making it an ideal middle-ground option.
In medical settings, it is used to treat testosterone deficiencies in men, helping improve symptoms like fatigue, low libido, and poor muscle tone. In bodybuilding and athletic performance, Testosterone Phenylpropionate is used to promote lean muscle mass, strength, recovery, and endurance, without excessive water retention. Its pharmacokinetic profile allows for more stable blood hormone levels and fewer estrogen-related side effects compared to some longer esters.
Benefits
-
Supports lean muscle growth
-
Improves recovery and training intensity
-
Enhances libido and sexual function
-
Boosts energy, focus, and mood
-
Helps maintain bone density and joint health
-
Causes less water retention than longer-acting esters
Side effects
-
Acne and oily skin
-
Increased body hair growth
-
Suppression of natural testosterone production
-
Mood changes or irritability
-
Gynecomastia (due to estrogen conversion)
-
Water retention (mild compared to longer esters)
-
Injection site pain or swelling
Dosages & Protocol
Dosages for Men:
-
Beginners: 200–300mg per week (2ml–3ml), injected every 3 days
-
Intermediate–Advanced Users: 400–600mg per week (4ml–6ml), injected every 2–3 days
Note: Each 1ml ampoule contains 100mg, so adjust total volume accordingly.
Estrogenic side effects can be managed using products like Arimidex or Nolvadex if needed.
Not recommended for women due to high chance of virilization.
How to administer
Administering Testosterone Phenylpropionate 100mg requires attention to hygiene and technique to ensure proper absorption and reduce complications.
Gather Supplies:
-
Testosterone Phenylpropionate ampoule
-
3ml sterile syringe
-
2 needles (one for drawing, one for injecting – 23–25 gauge)
-
Alcohol swabs
Prepare the Injection Site:
-
Wash hands thoroughly with soap and water
-
Choose an intramuscular injection site (glute, thigh, or deltoid)
-
Clean the injection site with an alcohol swab
Prepare the Syringe:
-
Break open the ampoule and draw the entire contents into the syringe
-
Remove the drawing needle and replace it with a clean injection needle
-
Hold the syringe upright, tap to release air bubbles, and push plunger to remove any air
Administer the Injection:
-
Insert the needle at a 90° angle into the muscle
-
Aspirate slightly to check for blood (optional but recommended)
-
If clear, inject the solution slowly
-
Withdraw the needle and press with an alcohol swab
Post-Injection Care:
-
Dispose of needles safely in a sharps container
-
Massage the site gently to reduce discomfort
-
Monitor for signs of irritation or infection
Storage
Store at room temperature (15–25°C), away from direct light and moisture. Do not refrigerate. Keep ampoules in original packaging until use.
Half life & detectability
Half-Life: Approximately 4–5 days
Detection Time: Can be detected for 2–3 months depending on testing method and individual metabolism
For athletes subject to drug testing, it is crucial to consider these detection times to avoid positive tests for banned substances.