Infinity Pharma SUSTA 400mg Injection | Testosterone Blend
Testosterone Compound 400 mg/ml Injectable Solution
SUSTA 400 by Infinity Pharma is an oil-based injectable solution containing a blend of five different testosterone esters — including Propionate, Phenylpropionate, Isocaproate, Cypionate, and Enanthate — designed to provide a rapid and sustained release of testosterone into the bloodstream. This mix of short-, intermediate-, and long-acting esters helps elevate testosterone levels quickly and maintain them for about 7 – 10 days after intramuscular injection.
Composition per ml:
• Testosterone Propionate USP – 50 mg
• Testosterone Phenylpropionate – 50 mg
• Testosterone Isocaproate – 150 mg
• Testosterone Cypionate USP – 75 mg
• Testosterone Enanthate USP – 75 mg
• Oil base q.s.
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Benefits (According to Product Info & Online Sources)
✅ Rapid & Sustained Testosterone Release
Thanks to the combination of both fast-acting and long-acting esters, SUSTA 400 can boost serum testosterone quickly (within ~6 hours) and keep levels elevated for days, offering more stable hormone levels with fewer injections.
✅ Muscle Growth & Strength Enhancement
The elevated testosterone environment supports protein synthesis, muscle gain, and strength improvements, making SUSTA 400 a popular choice in bulking and strength-building cycles.
✅ Improved Recovery & Endurance
Increased testosterone is associated with better nitrogen retention and red blood cell production, which can enhance muscle recovery and stamina between workouts.
✅ Boosted Libido & Well-Being
Testosterone plays a key role in sexual drive and overall sense of well-being, and users often report improved libido and mood during testosterone-enhancing protocols.
✅ Versatile Use
This multi-ester blend is frequently used for bulking cycles due to its anabolic effects, but it’s also described in some references as suitable for general testosterone support when levels are low.
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Possible Side Effects
As with other testosterone esters and blends, SUSTA 400 carries potential risks — particularly if used outside medical supervision or at high doses. Online product information and clinical sources highlight common and less common side effects:
⚠️ Estrogenic Effects
•Water retention and bloating, which may lead to puffiness and a bloated look.
•Gynecomastia (development of male breast tissue) due to testosterone converting to estrogen.
⚠️ Androgenic Effects
•Acne and oily skin.
•Increased body or facial hair growth.
•Possible hair loss/accelerated male-pattern baldness in genetically predisposed individuals.
⚠️ Hormonal Suppression
•Suppression of natural testosterone production, making post-cycle therapy (PCT) important after a cycle to help restore endocrine balance.
⚠️ Cardiovascular & Metabolic
•Changes in cholesterol levels and elevated blood pressure with prolonged or high-dose use.
•Increased red blood cell count (polycythemia), which may affect circulation if unmonitored.
⚠️ Mood & Psychological
•Some users report mood swings, irritability, or aggression during use.
⚠️ Injection Site Reactions
•Pain, swelling, or irritation at the injection site can occur with any intramuscular testosterone injection.
