Tirzepatide/Glycine 20mg/5mg

What is the Tirzepatide + Glycine Combination?

This formulation pairs tirzepatide — a dual GIP/GLP-1 receptor agonist — with glycine, a simple amino acid with a surprisingly wide range of biological roles. Glycine is the most abundant amino acid in the body and serves as a building block for collagen, a regulator of the nervous system, and a metabolic cofactor. Together, the two agents address both weight management and broader metabolic and recovery support.

How It Works

Tirzepatide activates both GIP and GLP-1 receptors to reduce appetite, improve insulin sensitivity, and support fat metabolism. Glycine complements this through several pathways: it is required for the synthesis of glutathione (a key antioxidant), it supports collagen production in connective tissue, it has been studied for improvements in sleep quality and insulin sensitivity, and it acts as an inhibitory neurotransmitter that may reduce systemic inflammation.

Key Benefits

The combination may offer advantages over tirzepatide alone for patients focused on body composition rather than just weight reduction. As tirzepatide drives fat loss, glycine supports the preservation of connective tissue integrity and lean muscle through collagen synthesis pathways. Research on glycine independently suggests benefits for sleep quality, joint health, and metabolic regulation — all relevant for patients undergoing body composition changes.

What to Expect

This combination is administered via weekly subcutaneous injection, following tirzepatide titration protocols. Patients typically notice appetite and weight effects from the tirzepatide component within the first 4 weeks. The glycine contribution is more subtle and cumulative — supporting recovery, joint comfort, and overall tissue integrity over time. As with all compounded formulations, prescription and physician oversight are required.

Quality & Sourcing

Every tirzepatide/glycine combination formulation from Greenstone Peptides is compounded in the USA by licensed pharmacy partners under USP 797 sterile standards. Each batch is third-party tested for potency, sterility, and endotoxin.