Testosterone Enanthate
Delatestryl
Half-life
7.5 days
Time to Peak
36 hr
Steady State
~38 days
Bioavailability
100%
Dose Range
50–500 mg
Frequency
Weekly
Overview
Testosterone Enanthate is a widely used testosterone ester with a slightly shorter half-life than Cypionate (~4.5 days). It's the most common testosterone form in Europe and is interchangeable with Cypionate for TRT purposes.
Mechanism of Action
Depot injection releases testosterone via ester hydrolysis. Testosterone binds androgen receptors, promoting anabolic effects and maintaining male sex characteristics.
Dosing Information
| Route | Dose Range | Half-life | Tmax | Frequency |
|---|---|---|---|---|
| Intramuscular (IM) | 50–500 mg | 7.5 days | 36 hr | Weekly, Every 2 weeks, Twice weekly |
| Subcutaneous (SubQ) | 25–200 mg | 7.5 days | 2 days | Twice weekly, Every other day, Weekly |
Common Side Effects
- · Acne
- · Hair thinning
- · Increased hematocrit
- · Elevated estradiol
- · Testicular atrophy (without HCG)
- · Injection site pain
- · Mood changes
Monitoring Recommendations
Same monitoring as Testosterone Cypionate: Total T, Free T, Estradiol (sensitive), CBC, PSA every 3-6 months initially, then annually.
Storage & Handling
Room Temperature
Store at 20-25°C. Excursions permitted 15-30°C.
General
Protect from light. Do not refrigerate or freeze.
Community Notes
Functionally identical to Cypionate for TRT — the choice usually comes down to availability and carrier oil preference. Enanthate is typically in sesame oil, while Cypionate is in cottonseed oil. Some users report slightly less PIP with Enanthate.
Used in Regimens
4 regimensTest/Deca Bulk Cycle
Testosterone enanthate + Nandrolone Decanoate (Deca) classic bulk cycle. One of the most popular intermediate AAS stacks. Deca adds significant mass with less androgenic side effects than testosterone alone. Requires HCG on-cycle, an AI if needed, cabergoline for prolactin, and full PCT.
Test E 400–500mg/week, 2x weekly injections.
Test/EQ Endurance Cycle
Testosterone enanthate + Boldenone Undecylenate (EQ/Equipoise) cycle favoured by endurance athletes and those seeking lean, quality mass with minimal water retention. EQ increases RBC and appetite. Requires long cycle duration (16+ weeks) due to undecylenate ester half-life.
Test E 300–400mg/week as base.
Test/Tren Recomp Cycle
Testosterone enanthate + Trenbolone Acetate recomposition cycle. Tren is the most powerful recomp compound available — simultaneously builds muscle and burns fat. Also the harshest: night sweats, aggression, insomnia, cardiovascular strain, and severe lipid disruption are all common.
Test E 300–400mg/week as base. Keep test lower than tren for recomp effect.
Your First Cycle — r/steroids Wiki
The r/steroids community wiki canonical beginner cycle: 500mg/week testosterone enanthate or cypionate for 15–16 weeks, Nolvadex-only PCT. Deliberately higher dose than clinical harm-reduction guidelines (supraphysiological ~2000–3000+ ng/dL) for visible, measurable gains. The most-referenced beginner AAS protocol in English-speaking communities.
500mg/week test E. Split 250mg x2 weekly (Mon AM / Thu PM). Community standard.
Data Sources
- FDA Label Delatestryl FDA Prescribing Information
- Peer-reviewed Behre & Nieschlag 1998 — Comparative PK of Testosterone Esters
- Peer-reviewed Nieschlag et al. 2004
Related Tools
Track Testosterone Enanthate with Doseline
Reminders, medication level charts, injection site rotation, and protocol tracking — all free, all private.
Join the waitlistDoseline provides informational tools only. It is not a medical device and does not provide medical advice. Always consult a qualified healthcare provider.