Our sourcing standards
What separates Peptide12 from the gray market.
503A & 503B compounding
We work exclusively with FDA-registered compounding pharmacies regulated under section 503A (patient-specific compounding) or 503B (outsourcing facilities held to manufacturer-grade standards).
Third-party potency & purity
Every batch is independently tested for identity, potency, sterility, and endotoxin levels. Certificates of analysis are available on request for any compounded medication.
No research-grade peptides
We do not source from "research chemical" suppliers. Period. If a peptide can't be sourced through a verified US compounding pharmacy under prescription, we don't offer it.
Cold-chain logistics
Temperature-sensitive medications (GLP-1s, peptides, NAD+) ship in validated cold-chain packaging with included temperature indicators.
Protocol evidence
A short, plain-English summary of why we offer each protocol, with primary literature you can verify.
GLP-1 weight loss
Compounded semaglutide and tirzepatide are prepared by US 503A/503B pharmacies under individualized provider prescription, with flexible dosing tailored to the patient by the prescribing provider.
Selected references
- · Wilding JPH et al. Once-Weekly Semaglutide in Adults with Overweight or Obesity. NEJM 2021.
- · Jastreboff AM et al. Tirzepatide Once Weekly for the Treatment of Obesity. NEJM 2022.
Antioxidant and mitochondrial support (glutathione, methylene blue)
Compounded glutathione and low-dose oral methylene blue are prescribed off-label under provider supervision for antioxidant capacity and mitochondrial energy support, with drug-interaction screening required before methylene blue is dispensed.
Selected references
- · Sinha A et al. Glutathione: a key player in oxidative stress and antioxidant defence. Free Radic Res. 2019.
- · Tucker D et al. From Mitochondrial Function to Neuroprotection — an Emerging Role for Methylene Blue. Mol Neurobiol. 2018.
Sermorelin / CJC-1295 / Ipamorelin
Growth-hormone-releasing peptides increase endogenous GH pulses without supplying exogenous GH directly. Prescribed for select patients seeking sleep, body-composition, and recovery support.
Selected references
- · Walker RF. Sermorelin: a better approach to management of adult-onset growth hormone insufficiency? Clin Interv Aging. 2006.
- · Sigalos JT, Pastuszak AW. The Safety and Efficacy of Growth Hormone Secretagogues. Sex Med Rev. 2018.
NAD+ & longevity
Subcutaneous NAD+ raises circulating NAD precursors and is used clinically to support cellular energy, sirtuin activity, and metabolic resilience. Glutathione provides antioxidant support, particularly for patients with elevated oxidative load.
Selected references
- · Yoshino J et al. NAD+ Intermediates: The Biology and Therapeutic Potential of NMN and NR. Cell Metab. 2018.
- · Pizzorno J. Glutathione! Integr Med (Encinitas). 2014.
Hormone optimization (TRT)
Testosterone replacement is reserved for patients with diagnosed hypogonadism confirmed by morning labs. Enclomiphene is offered for patients seeking to raise endogenous T while preserving fertility.
Selected references
- · Bhasin S et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. JCEM. 2018.
- · Wiehle RD et al. Enclomiphene citrate stimulates testosterone production while preventing oligospermia. Fertil Steril. 2014.
References are educational and do not imply equivalence to FDA-approved indications. Off-label use is determined by your prescribing provider based on your individual health profile.