When you contact support. Your email address, the topic, any order reference you give, and the message itself.
When you create an account. Your email address and a display name derived from it.
When you order. The shipping address you enter, the products ordered, and the order reference. Card details are handled by our payment processor and never reach our servers.
Automatically. Standard server logs: IP address, user agent, and the pages requested. We use the IP address to rate-limit the support form so it cannot be flooded.
We do not collect health information, we do not ask why you want a compound, and we have no interest in building a profile of you.