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

RIPEX 225

A fast-acting cut stack of three short propionate/acetate esters: test P, mast P and tren A.

1 min read 1 sources Updated May 2026
Class
Steroid stack (short esters)
Use
Intramuscular (oil, frequent)
Contents
Test P + mast P + tren A (225mg/ml)
WADA
Banned (category S1)

What is RIPEX 225?

RIPEX 225 combines three anabolic steroids each in the short ester form: testosterone propionate, masteron propionate and trenbolone acetate (225mg/ml total). The short esters make the stack act fast but require more frequent injections. A classic cut/hardness stack.

Anabolic steroids, not peptides, ready to use.

How it works

Like the TMT stack but in short esters: testosterone as the base, trenbolone as the potent driver, masteron for hardness. The short esters (propionate, acetate) mean fast onset but shorter duration, hence more frequent dosing.

Use

Intramuscular (glute, thigh), ready to use. Due to the short esters more frequently, often every other day or daily.

  • Inject with a clean IM needle, disinfect the injection site.
  • Rotate injection sites.
  • Subcutaneous: a pure short-ester cutting blend (propionate) plus tren - clearly irritating subQ, so IM is preferred.

Dosing

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What the research shows

The individual compounds are described (trenbolone: Yarrow, 2010; masteron as a DHT derivative). For the fixed combination there is no study. The short esters are only a release matter, not their own evidence base. Performance doses are not study-proven.

Side effects

  • Harsh tren profile: sleep problems, night sweats, irritability, prolactin.
  • Frequent injections can irritate the sites.
  • Lipid shift, cardiovascular load, hair-loss risk (DHT part).

Practice

  • Not a beginner stack, the tren part defines the profile.
  • Plan frequent dosing, rotate injection sites carefully.
  • 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.

19-nor note: nandrolone and trenbolone are progestagenic and can raise prolactin. The literature additionally discusses a prolactin-lowering agent (cabergoline) and a somewhat longer wash-out window here.

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 Tissue selectivity and pharmacology of trenbolone (a potent anabolic steroid). Yarrow et al., Steroids, 2010

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