Cancel your GNC subscription by mail
GNC deals with cancellations through the post, so the request goes in a letter and the certified-mail receipt is your proof of when. Our database has GNC's mailing address in Pittsburgh, United States.
Let Postbye cancel GNC for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Money-back guarantee within 10 business days.
Postbye is not affiliated with GNC.
- 4.8 from 2,931 reviews
- 3 GNC cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel GNC by mail
Gather your account details
Put the name and email on the account and, if you have one, an account or customer number in front of you before you write: the request to GNC is only as good as the details it quotes.
Write the cancellation request
The letter asks GNC to end the account, stop every future charge and confirm it in writing, under the subject line “Subject: Subscription termination – GNC”. Postbye fills it in from our English template.
Mail the letter with a receipt
Send the letter to the Pittsburgh mailing address shown below by certified mail. Keep the tracking number safe.
Keep the delivery receipt
Keep the tracking record with your copy of the letter. If GNC bills you after the date it received the request, you have the dates to point to.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your GNC cancellation letter goes
GNC takes its post at 300 6th Ave, Pittsburgh, PA 15222, which is where a cancellation letter belongs.
Pittsburgh, Pennsylvania 15222 is a United States address, so ordinary certified mail reaches it.
Inside, the salutation reads “To Whom It May Concern,”, followed by your details under Name, Address and E-mail.
Prefer to write it yourself? Use our letter template
Before you cancel GNC, check these
- Cancelling usually ends access at the end of the period you paid for, so you keep what you paid for until then.
- Use the same name and email as on the account. A mismatch can delay the request.
- Check your next statement: no charge should appear after the cancellation date.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel GNC for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
How cancelling by mail works
A subscription ends when the company records your request, not when you stop using it, and a letter is the record you can show later.
A phone call leaves nothing behind; a letter leaves a copy, a date and a delivery receipt.
GNC cancellation at a glance
- How GNC accepts cancellations
- By mailed letter
- Mailing address on file
- GNC 300 6th Ave Pittsburgh, PA 15222
- Country
- United States
- Letter language
- English (template en)
- Added to the database
- April 30, 2026
- Data last checked
