

Manufacturer: Axiolabs
Pharmaceutical name: Testosterone Mix
Pack: 10 ml vial (350 mg/ml)
Testosterone Decanoate 140mg
Testosterone Phaenylpropionate 84mg
Testosterone Propionate 42mg
Testosterone Isocarpoate 84mg
Sustaplex 350 is a high-potency test blend from Axiolabs, mixing short, medium, and long esters for balanced hormone levels and minimized injection frequency. It ramps up quickly, peaks early, then tapers — perfect for your most serious cycles.
This blend floods your body with testosterone, increasing protein synthesis, red blood cell production, libido, and recovery. It's built for mass cycles, body recomposition, and strength phases. Faster recovery and fuller muscle pumps? Check.
At 350 mg/ml versus 250–300 mg/ml, Sustaplex delivers more testosterone per injection - and the Axiolabs batch is lab-verified for purity and potency. That means stronger results, fewer shots, and the same release pattern you expect from a classic Sustanon blend.
Mike hit a 20 lb PR on bench after 8 weeks of Sustaplex 350 + Deca. "Strength and fullness skyrocketed - but estrogen was managed with monthly bloods and a steady AI."
Expect typical testosterone risks: gyno, water retention, elevated estrogen. Manage with AI and monitor bloodwork. Hair loss or oily skin may occur in prone users. Use responsibly and rotate injection sites.
Feature | Sustaplex 350 | Sustanon 300 | Test Enanthate 250 |
---|---|---|---|
Test Dose | 350 mg/ml | 300 mg/ml | 250 mg/ml |
Injection Frequency | Every 7–10 days | Weekly | 2x/week |
Onset Speed | Fast | Fast | Moderate |
Estrogen Risk | Moderate | Moderate | Moderate |
Best Use | Heavy bulking/strength | Bulking/growth | Standard anabolic cycles |
Sustaplex 350 is a high-dose testosterone blend (Sustanon-style) offering fast onset, strong anabolic effects, and infrequent injections—perfect for intense training cycles.
Most users notice strength and libido improvements within the first 5–7 days, while smaller gains and fullness continue throughout the 2–3 weeks. Peak results hit around week 6.
Yes. At 350 mg/ml vs. standard 250–300 mg/ml, Sustaplex delivers more testosterone per shot—faster results, more power, same ester blend.
Inject once every 7–10 days. Advanced users may choose twice weekly, but the ester combination supports longer intervals.
Absolutely. Sustaplex 350 + Deca is a classic mass-building stack. Be sure to add an AI and run PCT to support recovery and hormone balance.
Sustaplex 350 by Axiolabs is the next-generation Sustanon-style blend for serious gym warriors seeking solid muscle and strength gains. With its potent dose, quality control, and balanced ester profile, it checks all the boxes: fewer injections, reliable performance, and a proven stack foundation. Ready to dominate your cycle?
Related reads: Check how Deca completes this stack or why Test Enanthate is simpler but less potent.
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