
Hormone Optimisation & Performance
Follistatin 344 Pen
Advanced Muscle Growth & Recovery Support. A ready-to-use injectable peptide pen designed to support muscle development, recovery performance, and body composition optimisation.

Hormone Optimisation & Performance
Advanced Muscle Growth & Recovery Support. A ready-to-use injectable peptide pen designed to support muscle development, recovery performance, and body composition optimisation.
The Follistatin 344 Pen delivers a convenient ready-to-use format of a peptide widely studied for its role in regulating myostatin activity. By inhibiting myostatin, a naturally occurring protein that limits muscle growth, Follistatin 344 is commonly incorporated into advanced performance and body composition protocols designed to support increased lean muscle development and recovery. Follistatin 344 is frequently utilised within clinic-led optimisation programmes focused on physique enhancement, recovery support, and performance improvement. Due to its potential anabolic support mechanisms, it is often combined with structured training, nutrition, and recovery protocols. The injectable pen format provides simplified administration and consistent dosing for professional treatment environments.
Supports lean muscle development and body composition goals Assists recovery following intense physical training Supports anabolic and performance-focused protocols Helps regulate myostatin-related pathways Designed for advanced clinic-led optimisation programmes Convenient ready-to-use injectable pen format
Every Effira injectable pen features a unique QR code linked to batch-specific product documentation. Scan to instantly access Certificate of Analysis (CoA) information, batch verification, manufacturing data, and full traceability records, providing complete confidence in product authenticity and quality standards.
Access COA LookupStore refrigerated at 2-8°C. Do not freeze unless specifically stated on the product label or batch documentation.
Keep in original packaging until use. Protect from unnecessary temperature variation. Follow clinic internal SOPs and local professional requirements.
24 months from manufacture
Due to exceptionally high demand, current processing times are approximately 10 business days.
Sent on receipt of payment
Shipped via FedEx® Temp-Assure
Sign in with an approved clinic account to access product documentation.