Sustaplex

What is Sustaplex by SYN Pharma?

Sustaplex is SYN Pharma’s premium multi-ester testosterone blend, formulated to deliver rapid onset and long-lasting hormonal stability. Combining four unique testosterone esters, Sustaplex provides both immediate and extended anabolic effects, making it ideal for comprehensive hormone support in bulking, maintenance, or TRT-style cycles.

Each 10 ml vial is dosed at 325 mg/ml and includes a precise mix of short, medium, and long esters for optimal absorption and peak hormonal performance.

Compound Breakdown (Per ml)

• Testosterone Propionate – 65 mg
• Testosterone Phenylpropionate – 65 mg
• Testosterone Isocaproate – 90 mg
• Testosterone Decanoate – 105 mg

Benefits of Sustaplex

• Fast-acting and long-lasting testosterone elevation
• Enhances muscle mass, strength, and endurance
• Supports libido, energy, and mood
• Minimized hormone fluctuations with blend synergy

Product Details

• Compound: Multi-Ester Testosterone Blend
• Concentration: 325 mg/ml
• Volume: 10 ml per vial
• Total Content: 3250 mg per bottle
• Injection Frequency: Twice per week recommended

Dosage and Administration

Sustaplex is typically dosed at 325 to 650 mg per week, split into two weekly injections (e.g., Monday and Thursday) to maintain stable hormone levels. The blend is designed for 10 to 12-week cycles, and may be used solo or stacked with additional compounds for greater muscle-building or performance enhancement.

10-Week Sustaplex Cycle Example

Common Questions About Sustaplex

Is Sustaplex the same as Sustanon?

While both are multi-ester testosterone blends, Sustaplex features slightly different ratios. It still delivers fast onset and sustained hormonal elevation like Sustanon, with optimized absorption and flexibility for different cycle lengths.

Can Sustaplex be used for TRT?

Yes, especially in clinical or advanced TRT settings. Its balanced ester blend allows for less frequent injections while maintaining stable testosterone levels over time.

Does it require an aromatase inhibitor?

Yes. Like all testosterone compounds, Sustaplex aromatizes into estrogen. A low to moderate dose of Aromasin or Arimidex is typically used to prevent side effects such as gynecomastia or water retention.

When should I begin PCT after Sustaplex?

PCT should begin approximately 18–21 days after the last injection to allow the longest ester (Decanoate) to clear. A standard Nolvadex or Clomid-based protocol is recommended.