

Sustaxyl 350 mg – High-Strength Testosterone Blend for Muscle Growth
Active Ingredients:
- Testosterone Propionate 42 mg
- Testosterone Isocaproate 84 mg
- Testosterone Phenylpropionate 84 mg
- Testosterone Decanoate 140 mg
Manufacturer: Kalpa Pharmaceuticals
Pack Size: 10 mL Vial (350 mg/mL)
Sustaxyl 350 mg is a high-potency blend of four testosterone esters, formulated by Kalpa Pharmaceuticals. This compound delivers a steady release of testosterone into the bloodstream, supporting sustained anabolic activity. Ideal for bodybuilders seeking serious mass and strength gains, it combines fast-acting and long-acting esters for maximum performance.
Each milliliter contains a total of 350 mg of testosterone from the following esters:
Unlike single-ester testosterone injections, Sustaxyl 350 ensures a more stable hormone level and requires less frequent administration. Its versatility makes it a favorite among both amateur and experienced athletes.
The standard dose ranges from 250 mg to 750 mg per week. Due to its high concentration, most users inject twice a week for stable serum levels. Sustaxyl stacks well with other bulking agents like Nandroxyl 250 or Boldaxyl 300.
You can explore other testosterone-based options like Testoxyl Enanthate or Testoxyl Cypionate for cycle variety. For more reliable sources, visit our trusted steroid shop hub.
Sustaxyl 350 is commonly used in bulking cycles to promote muscle growth, enhance strength, and improve physical performance through sustained testosterone release.
Sustaxyl has a slightly different ester ratio and a higher total testosterone concentration (350 mg/mL vs. Sustanon 250 mg/mL), offering more potent effects with fewer injections.
Due to the inclusion of long-acting esters like Testosterone Decanoate, Sustaxyl may remain detectable for several weeks post-cycle.
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Oct 22, 2018 (08:34)
i mostly use sustaxyl in my cycle for testosterone. I used it 700 mg a week and i went from 76 kilos to 80 kilos in just 2 months. very little water retention.