This information is for research and educational purposes only. No medical recommendations. Products are not approved for human use. For health questions, consult a doctor.

Lexicon

Muscle & performance

Supertest 450

A mega mix of several testosterone esters at high total concentration, essentially a souped-up Sustanon.

1 min read 1 sources Updated May 2026
Class
Testosterone ester mix (anabolic steroid)
Use
Intramuscular (oil, in mg/week)
Contents
Several test esters (450mg/ml)
WADA
Banned (category S1)

What is Supertest 450?

Supertest 450 is a mega mix of several testosterone esters at very high total concentration (450mg/ml). Essentially it is a souped-up Sustanon with even more different esters and higher concentration. But the compound remains testosterone.

Anabolic steroid, not a peptide, ready to use.

How it works

All esters release testosterone, which binds the androgen receptor and drives muscle growth, strength and male hormone effects. The variety of esters only smooths the release curve, the high concentration reduces the injection volume. Pharmacologically it is simply high-dose testosterone.

Use

Intramuscular (glute, thigh), ready to use. The very high concentration means a small volume is enough.

  • Inject with a clean IM needle, disinfect the injection site.
  • Rotate injection sites.
  • Subcutaneous: a multi-ester blend with short esters and a high solvent load irritates subQ strongly - IM clearly preferred.

Dosing

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What the research shows

As with the other test mixes: testosterone as hormone replacement is established, the high mega-mix dosing is not. High-dose performance use is not covered by controlled studies, and risk scales with the dose (pharmacology context: Yarrow, 2010).

Side effects

  • Like testosterone generally, but more pronounced due to the high dose.
  • Estrogen effects, axis suppression, lipid shift, blood pressure.
  • High doses clearly strain the heart and circulation.

Practice

  • High concentration means: dose precisely, no crude syringe errors.
  • Watch bloodwork, plan a post-cycle.
  • Banned in official competition (WADA S1).

Storage

Store at room temperature, cool and protected from light, out of reach of children. Keep the original bottle closed and mind the expiry date.

Practice

PCT / after coming off

Anabolic substances suppress the body's own testosterone production in the research context. Anyone who comes off a cycle (rather than running it continuously) typically uses a post-cycle therapy (PCT) to restart the natural axis (HPTA).

The standard scheme in the research/literature context combines a SERM (tamoxifen and/or clomifene, alternatively enclomiphene) over roughly four weeks, optionally preceded by HCG to re-sensitise the testes before the SERM block. An aromatase inhibitor (anastrozole/exemestane) belongs more to on-cycle estrogen control than to the PCT itself.

Tip: order the PCT items together with the cycle so they are already on hand when you come off.

This information serves research and educational purposes only. Not medical advice.

Evidence

Sources

  1. 1 Trenbolone review as a reference for the pharmacology of anabolic steroids. Yarrow et al., Steroids, 2010

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