Description

Technical Parameters

Testosterone Undecanoate Product Introduction

Pure Steroid Powder | Testosterone Undecanoate (Testosterone Undecanoate) Muscle-Building Supplement Ingredient

CAS No .: 5949-44-0

EINECS number : 227-715-6

Molecular formula : C₃₀H₄₈O₃

Molecular weight : 456.71

Melting point : 42°C-46°C

Appearance : White or off-white crystalline powder

Testosterone Undecanoate Usage

Testosterone undecanoate is an ultra-long-acting testosterone ester . Due to its long half-life of 16-20 days , it is widely used in long-term muscle-building cycles, hormone replacement therapy (TRT), and oral testosterone preparations .

✅ Testosterone Undecanoate Ultra-Long-Lasting Muscle Building :

16-20 days half-life , maintaining a stable anabolic environment

A 12-16 week cycle can increase muscle mass by 6-10kg (combined with training and diet)

✅ Testosterone Undecanoate Hormone Replacement Therapy (TRT) ：

Very infrequent injections (one injection every 10-14 weeks)

Oral preparations (such as Andriol) 1-2 times daily

✅ Testosterone Undecanoate Competitive Sports Applications :

Suitable for athletes who need long-term stable testosterone levels

Testosterone Undecanoate Properties

Testosterone Undecanoate Ultra-Long-Release :

Undecanoate gives it an extremely long half-life of 16-20 days

The injectable formulation only requires one injection every 10-14 weeks

Testosterone Undecanoate Estrogen Conversion :

The aromatization rate is moderate and requires combination with anti-estrogen drugs (such as anastrozole)

Gynecomastia risks are manageable

Testosterone Undecanoate Androgenic Activity :

The androgenic effect is significant and may cause acne and hair loss (in those with genetic sensitivity).

Testosterone Undecanoate has flexible dosing options :

Injection : 250-1000 mg/time, once every 10-14 weeks

Oral dosage form : 40-80 mg twice daily (must be taken with fat)

Testosterone Undecanoate Applications

Testosterone Undecanoate Bulking Cycle :

Recommended dose : 750-1000 mg/time, once every 10 weeks

Best combination : + Anavar or Primobolan

Testosterone Undecanoate Hormone Replacement Therapy (TRT) :

Injection : 1000 mg/time, once every 12 weeks

Oral dosage : 80-160 mg/day, divided into 2 doses

★Comparison of the effects of several testosterone esters TPP\TD\TU\TE\TA

Testosterone esters	Main Applications	Injection frequency	Features
Testosterone Phenylpropionate	Short-term replacement therapy (eg, post-PCT recovery)	2-3 times a week	Fast-acting, suitable for short-term use
Testosterone Decanoate	Long-acting replacement therapy (TRT)	Every 3-4 weeks	Similar to enanthate, but with a longer half-life
Testosterone Undecanoate	Ultra-long-acting TRT or oral preparations (such as Nebido/Aveed)	Once every 10-14 weeks (injection)	The blood drug concentration is the most stable, suitable for long-term use
Testosterone Enanthate	Standard TRT or Muscle Building Cycle	Once a week	Balanced release, the most commonly used ester in the world
Testosterone Acetate	Experimental short-acting studies (rarely used in clinical practice)	Daily or every other day injection	Frequent dosing is required, and practicality is low

Precautions

Estrogen management : High doses require combination with AI (such as anastrozole)
Effect on blood lipids : May lower HDL (good cholesterol), requires fish oil supplementation
Oral absorption : Must be taken with high-fat food (fat helps absorption)

Why choose testosterone undecanoate ?

Longest-acting testosterone ester with the lowest injection frequency
Oral + injection dual dosage form , flexible application scenarios
Can be used for both medical and fitness purposes , suitable for TRT and muscle building

Testosterone UndecanoateConclusion

Testosterone undecanoate is the longest-acting testosterone ester currently available, making it particularly suitable for long-term muscle building and TRT . The recommended dose is 750-1000mg/10 weeks .

Need a specific cycle plan ?

We provide professional medication guidance to help you achieve your goals safely and efficiently!

Testosterone Undecanoate Quality Guarantee :

GMP -compliant production , each batch HPLC purity tested (≥99% )

Third-party laboratory report (COA) is included with the goods

Testosterone Undecanoate Global Shipping :

Original sealed packaging , private delivery

If you need anything, please contact Allen