Where do you ship from?

At this time, YJ Peptides primarily ships within the United States , though we are thoughtfully exploring options to expand our availability to other international regions in the near future.

If you’re an international researcher interested in our products, we’d love to hear from you. Please feel free to reach out—we’re always happy to connect with curious minds around the globe.

That said, it is the customer’s responsibility to ensure that the purchase and import of research peptides complies with all applicable local laws and regulations. We strongly recommend reviewing your country’s guidelines prior to placing an order.

Thank you for your understanding as we work to expand responsibly and in compliance with global standards.

How soon will my order be shipped?

At YJ Peptides, we strive to ship all confirmed orders within 1–2 business days. With U.S.-based inventory and a streamlined fulfillment process, we aim to provide fast, dependable shipping to research professionals across the country.
Once your order has been dispatched, you’ll receive a tracking number so you can monitor its journey.
While we do our best to ensure timely delivery, please note that shipping timelines may vary due to courier delays or external circumstances beyond our control. That said, we are committed to providing efficient, transparent service every step of the way.
If your research timeline is urgent or if you have any questions, our team is always just a message away—we’re here to help. 

Do you provide a Certificate of Analysis for each product?

Yes — at YJ Peptides, every research peptide and nootropic we offer is accompanied by a third-party Certificate of Analysis (COA) confirming its purity, potency, and identity.
Unlike many suppliers who rely on vendor-provided documents—or forgo testing entirely—we go a step further to ensure that each compound is independently tested by U.S.-based labs. We do this to provide you with greater transparency, confidence, and scientific assurance in your research.

Does GG Peptides offer refunds？

Given the sensitive nature of our products and the regulations governing research compounds:
Non-refundable: Once an order is submitted, we do not accept returns, exchanges, or cancellations. No refunds will be issued for any reason.
Refundable:
Shipping delays, purity below 98%, content deviating by more than 10% from the stated amount, or product damage during transit.