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Testosterone 400
$115.00
T-400 contains Testosterone Enanthate, Propionate and Cypionate. This composition provides effective muscle mass gain, as well as strength performance improvements.
10mL / 400mg
- Usage: Inject 400-800mg once a week
- Cycle Duration: 8-12 weeks for optimal results
- Aromatization: Yes. Requires Letrozole – 2.5mg – each other day during the cycle
- Post Cycle Therapy: Nolvadex 40mg/day for 2 weeks, then 20mg/day for another 2 weeks
- Stack With: Winstrol for lean muscle or Deca for bulking
What is Syntest 400 by SYN Pharma?
Syntest 400 is a dual-ester testosterone blend by SYN Pharma, combining 200 mg of Testosterone Enanthate and 200 mg of Testosterone Undecanoate per ml. This formulation delivers both fast and ultra-long-acting esters in a single injection, providing immediate anabolic support with long-term hormonal stability. It is ideal for users seeking sustained testosterone elevation with less frequent injections.
Each 10 ml vial contains 400 mg/ml of testosterone, totaling 4000 mg of combined active compound per bottle. Syntest 400 is suitable for advanced hormone replacement protocols or long-term physique enhancement cycles.
Benefits of Syntest 400
- Delivers both short- and ultra-long-release testosterone esters
- Enhances strength, energy, and muscle development
- Improves mood, recovery, and sexual health
- Reduces the frequency of injections compared to single-ester protocols
Product Details
- Compound: Testosterone Enanthate 200 mg + Testosterone Undecanoate 200 mg
- Total Strength: 400 mg/ml
- Volume: 10 ml per vial
- Total Content: 4000 mg per bottle
- Injection Frequency: Once or twice weekly
Dosage and Administration
Standard dosing ranges from 400 to 800 mg per week, typically injected once or twice weekly. The Enanthate ester provides an early release while the Undecanoate ester extends hormonal activity, making Syntest 400 highly efficient for maintaining stable testosterone levels over time.
Ideal for cycles of 10 to 14 weeks. Due to the long half-life of Undecanoate, post-cycle therapy should begin approximately 3 weeks after the final injection.
10-Week Testosterone Blend Cycle Example
| Week | Syntest 400 (mg/week) | Aromasin (mg/EOD) | Optional Stack | Support |
| 1–2 | 400 | 12.5 | Anavar or Dbol | Liver support if using orals |
| 3–6 | 500–600 | 12.5–25 | Deca 300 or EQ | Continue blood pressure monitoring |
| 7–10 | 600–800 | 25 | Optional taper or continue full dose | Start HCG pre-PCT if needed |
Common Questions About Syntest 400
How often should Syntest 400 be injected?
Due to the presence of Testosterone Undecanoate, many users inject once per week. However, splitting into two doses weekly (e.g., Monday and Thursday) helps maintain even more stable blood levels, especially at higher dosages.
Is PCT required after using Syntest 400?
Yes. Testosterone blends are fully suppressive. Begin PCT 21–28 days after the last injection using Nolvadex, Clomid, or a full recovery protocol including HCG if needed.
Can Syntest 400 be used for cutting?
Yes. Although commonly used in bulking cycles, testosterone blends support cutting phases well when stacked with agents like Winstrol or Masteron. Its stable levels make it ideal for preserving lean mass while in a deficit.
What are the advantages of a test blend like Syntest 400?
It provides the fast action of Enanthate combined with the long-lasting effects of Undecanoate, allowing for powerful yet convenient testosterone delivery with fewer fluctuations and reduced injection frequency.
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