High-quality research compounds engineered for precision, consistency, and performance — at competitive pricing. Trusted nationwide.
XERO Peptides delivers premium research compounds with unmatched purity — sourced directly from the manufacturer for total quality control. No middlemen. No compromises.
Every batch is tested by Horizon Analytical using UPLC/MS and comes with a full Certificate of Analysis. We also compound 50+ peptides to custom order with secondary testing included.
Orders placed before 2 PM ship the same business day. Cold-chain packaging included at no charge. Full tracking on every shipment.
Every compound below is in stock, tested to 99%+ purity by Horizon Analytical, and ships same-day. All for in-vitro and pre-clinical research purposes only.
XERO Peptides isn't just a catalog — we're a compounding source. If you need a peptide that isn't listed above, we can synthesize it to your exact specifications. Every custom compound is sent for independent third-party UPLC/MS testing before it ships, and you receive a full Certificate of Analysis with your order. Same standard as everything we sell. No shortcuts.
Compounds We Can Make
Tell us the compound, quantity, and any spec requirements. We'll confirm feasibility and quote within 24 hours. Once synthesized, your batch goes straight to an independent lab for UPLC/MS before it ever ships.
You get the compound and the Certificate of Analysis — every time.
All XERO Peptides compounds are tested by Horizon Analytical — a US-owned and operated independent laboratory — using UPLC/MS. Results are verifiable at horizonanalytical.com.
XERO Peptides was founded on a single conviction — researchers deserve compounds they can actually trust. We source directly, test independently, and ship the same day. No middlemen. No guesswork. No compromise.
We sell high-purity research peptides and compounds, and we can also compound over 50 different peptides to custom order — synthesized to your specs, tested by an independent lab, and shipped with a full Certificate of Analysis.
XERO Peptides exists to supply researchers with the highest-quality peptide compounds available in the US — at prices that don't require a grant to afford. We started because we saw a market full of vague claims, inconsistent purity, and zero transparency.
Every compound we carry is sourced directly from the manufacturer, giving us complete control over the supply chain from synthesis to your door. No distributors. No unknown intermediaries. Just clean, verified, documented compounds.
We are researchers ourselves. We know what it means to run an experiment with a compound that doesn't perform to spec. That's why every lot we ship comes with a Certificate of Analysis from an independent US laboratory — not just a sticker on a vial.
Get In TouchBeyond our standard catalog, XERO Peptides has the capability to compound over 50 research peptides to order. If you need a specific sequence, concentration, or formulation — reach out. If we can make it, we will.
Every custom compound goes through the same rigorous process as our standard catalog. Once synthesized, we send the batch for secondary independent testing before it ever ships. You receive the compound and the CoA together.
This means you're not just getting a custom compound — you're getting a verified, documented, research-grade compound built specifically for your work.
If the compound you need isn't in our current catalog, we can likely make it. We compound over 50 peptides and research compounds to custom order.
Every custom batch is synthesized to specification, sent for independent secondary testing, and shipped with a full Certificate of Analysis — the same standard as everything we sell.
Select your syringe, enter your peptide amount, Bac water volume, and desired dose — we'll show you exactly where to draw on your syringe.
All fields update the syringe diagram in real time.
Research Use Only. This calculator is provided for in-vitro and pre-clinical laboratory research purposes only. Always independently verify all calculations before use in any research protocol. XERO Peptides compounds are not for human consumption.
Simultaneous activation of all three incretin and metabolic receptors — producing layered, synergistic effects no single or dual agonist can replicate.
Published in the New England Journal of Medicine (June 2023). 338 adults, multiple dose cohorts, 48 weeks. The 12mg weekly cohort produced results that set a new benchmark.
Secondary endpoints: significant reductions in fasting insulin, HOMA-IR, triglycerides, and waist circumference.
Tesamorelin (C₂₂₃H₃₇₀N₇₂O₆₉S, ~5,196 g/mol) is a synthetic analogue of endogenous growth hormone releasing hormone (GHRH) with a trans-3-hexenoic acid modification at the N-terminus. This structural change significantly extends plasma stability compared to native GHRH while preserving the identical receptor binding profile.
Unlike exogenous GH administration, tesamorelin operates entirely through the body's own pituitary axis — stimulating somatotrophs to produce and release GH in a natural pulsatile pattern. This means endocrine feedback loops remain intact, making it a uniquely clean research tool for GH axis studies.
It is the only GHRH analogue to receive FDA approval (as Egrifta, for HIV-associated lipodystrophy), making its pharmacological profile the most thoroughly characterized of any compound in its class.
Three interconnected pathways activated by a single compound — all downstream of the pituitary GHRH receptor.
Tesamorelin achieved FDA approval based on two Phase 3 trials (ENCORE and TESICO) enrolling over 800 HIV-positive adults. The primary endpoint — reduction in visceral adipose tissue measured by CT — was met with statistical significance.
Beyond lipodystrophy, tesamorelin has been studied in trials examining cognitive function in older adults, non-alcoholic fatty liver disease (NAFLD), and general visceral fat reduction — representing one of the broadest clinical profiles of any research peptide.
Exogenous testosterone shuts down the HPG axis. HCG bypasses the suppression and keeps the testes functioning — three critical pathways.
HCG has been used clinically for over 50 years in male hypogonadism, fertility treatment, and TRT support. The Journal of Clinical Endocrinology & Metabolism (2005) demonstrated that intratesticular testosterone levels — 50–100x higher than serum — are fully maintained with HCG co-administration during TRT.
Most experienced TRT physicians consider HCG a standard part of any male hormone optimization protocol — particularly for men who value fertility preservation or long-term testicular health.