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Real inbox, read by a person.

Useful things to send

• A correction. If something on a guide is wrong, say which line. Accuracy complaints jump the queue.
• A product we’re missing. Include a link — see submit a product.
• A broken or wrong link. Product listings change; tell us which tile.
• Business. Partnerships and press, same address.

Things we can’t help with

• Where to buy research peptides. We don’t answer sourcing questions.
• Protocols, measurements, or medical questions. We don’t answer those — speak to a doctor.