Due to the sensitive nature of our products, cancellations after shipment are not permitted.

Currently, we only ship domestically within the Continental United States.

  • Free Shipping: 3-5 Business Days
  • USPS Priority: 2-4 Business Days
  • FedEx 2-3 Business Days
  • FedEx Overnight

  • Free Shipping for orders over $200.00 (3-5 Business Days): $0.00
  • USPS Priority (2-4 Business Days): $15.00
  • FedEx 2-3 Business Days: $25.00
  • FedEx Overnight: $65.00

No. Our peptides are sold strictly for research purposes only and are not intended for human consumption or veterinary use.

Our peptides typically have a purity level of ≥99%, confirmed through rigorous testing and quality control. Detailed product specifications are available on individual product pages.

Storage conditions may vary depending on the peptide. Generally, peptides should be stored in a cool, dry place, with some requiring refrigeration. Refer to the detailed product specifications are available on individual product pages.

Due to the sensitive nature of our products, we do not accept returns. However, we will resolve any issues with your order promptly.

If you have any concerns or issues with your order, please contact our customer support team (customer.service@coastpeptides.com) immediately. We are dedicated to promptly addressing and resolving any problems.

Yes, we take data security very seriously. Our website uses SSL encryption, TLS 1.2 transport protocol, and we adhere to strict privacy policies to ensure your personal information is kept secure.

We respect your privacy and will not share your personal information with third parties without your consent, except as necessary to fulfill your order or comply with the law.

To ensure the fastest resolution to your inquiries, please structure your customer service emails as follows. We aim to respond to all emails within 24 hours during the standard business week. Please note that during holidays, response times may be slightly longer.

Note: Due to legal regulations, any emails regarding product usage will not receive a response.

Please Provide:

  • Order #
  • Name of Person Ordering
  • Description of Issue

This will help us resolve your issue as quickly as possible!

o. Coast Peptides products are sold strictly for Research Use Only (RUO) and are available solely to qualified researchers working in controlled laboratory environments. These materials are not approved by the U.S. FDA for human or veterinary use, including clinical trials, therapeutic procedures, or any form of consumption.

Coast Peptides operates in accordance with applicable regulatory guidelines, including Section 503A of the FDCA, and limits product access to professional research applications. Additionally, Coast Peptides does not provide usage guidance or protocol recommendations. It is the responsibility of each researcher to consult appropriately qualified experts for proper use and regulatory compliance.

This is a normal occurrence and does not affect product integrity. Peptide powders may settle into a compact mass during lyophilization or shipping, then fracture into smaller powder fragments upon handling. This visual change does not compromise purity, quality, or potency.

A: Certain peptides—especially those with hydrophobic amino acid sequences—may take longer to dissolve during reconstitution. To assist dissolution without compromising structural integrity, gently roll the vial between your fingers to encourage even dispersion. Avoid shaking, which may fragment or denature the peptide chains.

Lyophilized (freeze-dried) peptides remain stable for up to 24 months at room temperature, provided they are kept in dry, sealed conditions. Once reconstituted with solvent, peptides should be stored at 2–8°C (refrigerated) to preserve structural integrity and prevent degradation. Note: Always avoid repeated freeze–thaw cycles to maintain peptide purity and bioactivity.

Lyophilized refers to the freeze-drying process used to stabilize peptides and other biomolecules. During lyophilization, the material is rapidly frozen and subjected to vacuum conditions, removing moisture via sublimation. This results in a dry, porous powder with extended shelf life and enhanced stability, ideal for long-term storage and precise reconstitution.

Our products undergo HPLC testing at a reputable 3rd party lab. For testing results on our products, you can find testing under product pages

o. All products offered by Coast Peptides are strictly intended for research use only and are not approved for human consumption under any circumstances. Ingesting these compounds may pose serious health risks and violates the terms of purchase.

By placing an order, buyers confirm their agreement not to consume or administer these products in any form. Access is limited to qualified researchers operating within controlled laboratory settings.

While extensive information about peptides is publicly available, Coast Peptides does not offer research advice, protocol guidance, or usage recommendations. Doing so would contravene multiple regulatory standards.

By completing a purchase, you confirm that you are a qualified researcher and agree not to ingest or administer any products. All items sold by Modern Aminos are strictly intended for controlled laboratory research use only.

No. Delivery times are estimates only and are not guaranteed. Once an order leaves our facility, it becomes the responsibility of the selected carrier. Transit times may vary depending on location, carrier conditions, and seasonal factors.

If a shipment experiences a significant delay, we will work with you to reach a satisfactory resolution.

USPS tracking updates may occasionally stall, with packages remaining at the same location for 2–4 days before progressing. However, if there’s no movement for 8–10 calendar days, please reach out to our support team. At that point, we will classify the shipment as lost in transit and proceed with a reshipment at no additional charge.

We trust USPS (United States Postal Service) for all our shipments. USPS has proven to be reliable, and we can even ship to P.O. Boxes when necessary.

We highly recommend against using shipping forwarders as customers have had tons of issues with them before. Use a shipping forwarder at your own risk.

We process a large volume of orders daily, and while USPS may log the tracking information, there may be a delay in updating the status at the sorting facility. Please allow 1-2 business days for the system to reflect the latest updates.

Orders are typically processed and shipped the same business day (Monday–Friday). Since we ship from within the United States, most domestic deliveries arrive promptly regardless of payment method.

Please note: During major holidays or global disruptions, USPS may experience staffing limitations that can cause temporary delays in transit.

No. All delivery timelines listed on our site are approximate and not guaranteed. Once an item has shipped, it is fully under the control of the carrier, and transit times may vary due to routing, weather, or service delays.

If your order experiences a notable delay, please contact our support team. We’ll work with you to identify a satisfactory resolution, which may include discounts or partial refunds depending on the situation.

Please check your spam/junk folder. Our system sends automated emails including order confirmations, shipping updates, and tracking information. If you haven’t received these, feel free to contact us at cs@coastpeptides.com for assistance.

If your order doesn’t seem to process, reach out to our support team at cs@coastpeptides.com

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