Sacramento, California
Premium Research Peptides.
Tested. Trusted. Local.
From recovery and weight loss to longevity and aesthetics β Capital Peptides supplies research-grade peptides to labs, biohackers, and wellness researchers across Northern California and the USA.
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Free Tool
Peptide Reconstitution Calculator
Enter your vial, bacteriostatic water volume, and target research dose. Get exact draw in IU and ml. Works with every peptide we sell.
Open CalculatorWhy Capital Peptides
Sacramento-Based
Ships fast across Northern California with nationwide fulfillment from our Sacramento operations.
Third-Party Tested
Every batch comes with purity and identity verification. We publish COAs on request.
Research-Grade Only
Our peptides are supplied strictly for laboratory research β transparent, compliant, no grey-area claims.
Built by Researchers
We built the most-used peptide calculator on the internet. We understand the work.
Serving Greater Sacramento
Peptides Sacramento Β· Peptides Roseville Β· Peptides Folsom Β· Peptides Davis Β· Peptides Elk Grove
Common questions
Are peptides legal to buy?
Research peptides are sold as laboratory reagents. All Capital Peptides products are supplied for research use only β not for human consumption, diagnostic, or therapeutic use.
Do I need a prescription?
No prescription is needed for research-grade peptides sold for laboratory use. You must be 21 or older to purchase.
How are peptides shipped?
All peptides ship cold or at room temperature depending on stability, with tracking. We ship nationwide from the USA, with faster regional delivery to Sacramento, Roseville, Folsom, Davis, and Elk Grove.
What's the difference between BPC-157 and TB-500?
Both are studied for tissue repair but via different mechanisms. BPC-157 is a 15-residue peptide studied for gut and soft-tissue research; TB-500 is a fragment of Thymosin Beta-4 studied for actin regulation and cellular repair.
How do I use the calculator?
Enter your vial strength in mg, how much bacteriostatic water you added in ml, and your target research dose in mcg. The calculator returns the draw volume in ml and units on a U-100 insulin syringe.
Research Use Only. All products sold are for laboratory research purposes only. Not for human consumption, diagnostic use, or therapeutic use. Must be 21+ to purchase.