Peptides

At Preston’s Pharmacy, we are committed to providing high-quality compounded peptide medications that align with current federal and state pharmacy regulations. Our approach is intentionally conservative, transparent, and patient-focused. We compound only those peptides that are legally permitted and supported for individualized patient care when prescribed by a licensed healthcare provider.

This page is designed to clearly outline the peptide medications we currently compound and the forms in which they are available.

Our Compounding Philosophy

Compounded peptides are prepared on a patient-specific basis, pursuant to a valid prescription. Preston’s Pharmacy does not engage in mass manufacturing, commercial duplication, or the compounding of research-only or prohibited substances. All formulations are prepared with regulatory compliance, ingredient integrity, and patient safety as top priorities.

Availability may change based on evolving regulatory guidance, ingredient sourcing, and clinical standards.

Peptides We Are Permitted to Compound

GLP-Based Compounded Medications

GLP-based compounds may be prepared only when clinically appropriate and prescribed by a licensed healthcare provider. These medications are compounded exclusively for individualized patient use and are not marketed as commercial alternatives.

Patients should consult directly with their prescriber to determine whether a compounded GLP option is appropriate for their treatment plan.

GHK-Cu (Copper Peptide) — Topical Only

GHK-Cu is compounded strictly for topical application.

• Topical formulations only
• Not intended for injection or systemic use
• Prepared based on patient-specific prescriptions

This peptide is commonly prescribed for dermatologic or cosmetic-adjacent uses when deemed appropriate by a provider.

Sermorelin — Injectable (1.5 mg/mL)

Preston’s Pharmacy compounds Sermorelin in a standardized injectable concentration of 1.5 mg/mL. Standardization supports consistency, dosing accuracy, and streamlined workflows for prescribers.

• Injectable formulation
• Standard concentration: 1.5 mg/mL
• Compounded only with a valid prescription

Oxytocin

Oxytocin is compounded in the following dosage forms:

• Nasal spray
• Troche (sublingual)

Each formulation is prepared according to prescriber direction and individual patient needs.

PT-141 (Bremelanotide) — Injectable

PT-141 is compounded in injectable form only and is available when prescribed for appropriate patients.

• Injectable formulation
• Patient-specific compounding
• No research or bulk compounding

Commitment to Safety, Quality & Compliance

Preston’s Pharmacy adheres to applicable USP standards and pharmacy regulations. We work closely with prescribers to ensure that all compounded peptides are prepared responsibly, dispensed appropriately, and supported with proper counseling.