Train harder. Recover faster.
Perform at your peak.
The performance stack.
Three compounds that support blood flow, growth hormone recovery, and metabolic energy — designed for men who demand more from their bodies.
Performance isn't just about what happens during a workout. It's about the blood flow that delivers oxygen and nutrients when you need them most, the recovery signals that rebuild tissue while you sleep, and the metabolic support that keeps your energy levels where they need to be. Tadalafil taken daily supports vascular function and circulation. Sermorelin restores the natural GH pulse that drives overnight muscle repair and sleep quality. Weekly B12 injection maintains the neurological and metabolic foundation that sustained performance depends on.
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Three signals. One coordinated result.
Each compound in this stack targets a distinct physiological pathway. Together, they create a layered system that optimizes blood flow, recovery, and metabolic support — all working in sync whether you're in the gym or sleeping.
Overnight GH Restoration
Sermorelin signals the pituitary to restore natural growth hormone pulses — the same rhythm that drives muscle repair and tissue recovery during sleep. Enhanced overnight recovery means stronger performance the next day.
Vascular Performance
Daily tadalafil support for blood flow and circulation, delivering more oxygen and nutrients to working muscle during training and enhancing the pump when it matters most for performance.
Metabolic Foundation
Weekly B12 injection maintains the neurological and red blood cell function that sustained performance depends on — supporting energy production and cognitive sharpness across training cycles.
What's in this stack and why.
Every component is chosen for a specific role in performance optimization. There is no redundancy here — each compound addresses something the others cannot.
Sermorelin
Sermorelin is a bioidentical analog of growth hormone-releasing hormone (GHRH). It signals your pituitary gland to release your own natural growth hormone in pulsatile rhythm — restoring the recovery signal that intensive training depletes.
In a performance context, this matters because training breaks muscle tissue down. Sermorelin accelerates the overnight repair phase, enhances sleep quality, and ensures recovery keeps pace with training volume. The result is sustainable progression without degradation.
Tadalafil Daily
Tadalafil is a phosphodiesterase-5 inhibitor that supports vascular function and blood flow through smooth muscle relaxation. Daily dosing maintains consistent support for circulation, oxygen delivery, and nutrient transport to working tissue.
In a performance context, enhanced blood flow means better oxygen availability during training, faster nutrient delivery to muscles, and improved endothelial function. This directly amplifies the effect of each training session and supports recovery pathways.
B12 Weekly
Vitamin B12 (cobalamin) is essential for red blood cell formation, neurological function, and energy metabolism. Weekly injection ensures sustained levels of this critical cofactor, supporting the metabolic machinery that powers performance.
In a performance context, B12 maintains the neurological and metabolic foundation that training relies on. It supports energy production, cognitive focus, and recovery signaling — preventing the metabolic degradation that can occur with high training volume.
Training Without Support vs. With This Stack
Training hard demands recovery. This stack is designed to match your output with the physiological support your body needs to adapt, rebuild, and perform at a higher ceiling consistently.
Training Alone
With This Stack
The Bottom Line
This stack is designed for the athlete or trainee who has committed to serious performance and wants every recovery window optimized. Sermorelin restores the GH pulse. Tadalafil maximizes blood flow. B12 maintains the metabolic foundation. Together, they ensure your body can adapt and progress at the pace your training demands.
A protocol that compounds recovery.
Results from this stack progress across distinct phases. The first month establishes the foundation. Weeks 4-8 show acceleration in recovery speed. By week 9+, training performance visibly improves as the stack effects compound.
Foundation Building
Recovery Acceleration
Performance Peak
New Baseline Locked
Built for men serious about performance.
This is not a beginner protocol. This is the stack for someone who trains consistently, who understands that recovery is where adaptation happens, and who wants medically supervised support to match their training ambition.
Stack At a Glance
Common Questions
Why Sermorelin, Tadalafil, and B12 together specifically?
Each compound addresses a distinct aspect of performance. Sermorelin restores the overnight recovery signal, growth hormone, that training disrupts. Tadalafil optimizes blood flow and oxygen delivery during and after training. B12 maintains the neurological and metabolic foundation that sustained performance depends on. Together, they create a unified protocol that addresses recovery, vascular function, and metabolic support simultaneously.
Is this stack only for men?
This protocol has been specifically optimized for men’s physiology and performance goals. Sermorelin, Tadalafil, and B12 are all used across genders, but the dosing, timing, and outcomes of this particular stack are designed for male athletes and trainees. If you are a woman interested in a performance protocol, speak with your Obsidian physician about stacks tailored to your physiology.
Do I need labs before starting?
No prerequisite labs are required for this stack. Your prescribing physician will review your intake health history to ensure the protocol is appropriate for you. Labs may be recommended based on your specific situation, but they are not required to begin.
How do I manage the injections?
Sermorelin is a small nightly subcutaneous injection, pre-bed, and takes under a minute. B12 is a weekly intramuscular injection. Tadalafil is oral, taken daily. Your care team walks you through proper injection technique during your onboarding consultation, and you’ll have full support throughout the protocol.
Can I stack this with other protocols?
Stacks should not be combined with other stacks or treatments that contain the same compounds. If you are already using any of these compounds through another protocol, speak with your care team. Your physician will assess for any overlap and adjust your protocol accordingly.
Performance support,
prescribed for you.
Every Obsidian protocol is reviewed and prescribed by a board-certified physician based on your training history, goals, and how your body is responding. This is not a supplement. It is a medical protocol.
Medical Disclaimer: This page is for informational purposes only and does not constitute medical advice. All treatments described are prescribed by licensed physicians based on individual patient health history and clinical evaluation. Results vary. These statements have not been evaluated by the Food and Drug Administration. Obsidian Genetics treatments are not intended to diagnose, treat, cure, or prevent any disease. Consult your prescribing physician before starting, stopping, or modifying any medical protocol.