Contact Us

Last updated October 10, 2026

Questions about your order, a refund or your automatic refills? We're happy to help. A real person reads every email.

Email

We reply within one business day.

Monday to Friday, 9am to 5pm ET. Closed on weekends and US holidays.

Bitterkin
United States

Please don't send returns to this address. You never need to send the product back to get a refund.

When you email us, please include:

Your order number (it's in your order confirmation email).
The name and email address used on the order.
What you need: tracking, a refund, an address change, or to skip or cancel a refill.
For a damaged package, a photo of the damage.