- Get BOGO 50% off GNC Casein Protein with code CASEIN50, plus an extra 15% with code 15OFF.
Receive another additional $60 PayPal Credit via Slickdeals rebate when you buy 4 Casein Protein. (Exclusions Apply)
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$84.12 Before Rebate $24.12 AR
- Date of purchase must be 5/16/2019 – 5/18/2019
- Rebate submission must be between 5/16/2019 – 5/18/2019 – late submissions will not be accepted
- Step 1:
- Shop the BOGO 50% off GNC Casein Protein sale through this link
- Add 4 Casein Protein to your cart (Vanilla Cream or Chocolate Supreme)
- Note: Casein Protein is eligible to add a subscription to save an additional 10%. Subscriptions may be cancelled from your account page here
- In-Cart apply the following promo codes:
- CASEIN50
- 15OFF (Extra 15% Off)
- Step 2:
- Complete your purchase without going to any other website or using any browser extension.
- Step 3:
- Receive Your Additional $60 PayPal Credit via Slickdeals rebate
Your rebate will be processed within 30-60 days of the rebate close date.
Any inquiries can be sent to with "Exclusive GNC Rebate Offer" in the subject line.
- Rebate Terms:
- Date of purchase must be 5/16/2019 – 5/18/2019
- Rebate submission must be between 5/16/2019 – 5/18/2019 – late submissions will not be accepted
- Make sure you are logged into Slickdeals
- Whitelist Slickdeals in AdBlock
- Make sure cookies are enabled in your browser
- Complete your purchase in one browsing session
- Going through a cash back, extensions, or reward site will void your PayPal credit
- Not valid on the purchase of gift cards
- Cancelled and returned orders are not eligible for this offer
- User submission is subject to approval
- Slickdeals, LLC. reserves the right to terminate this offer at any time
- Cannot be combined with other Slickdeals Rebates.
- One rebate submission per order, you can make multiple orders following the above instructions
- Rebate will be paid out through PayPal to the email account entered below
- You do not need to use PayPal as your payment method- feel free to use credit card or PayPal.
- Valid only on the BOGO 50% off GNC Casein Protein
We launched the Slickdeals Rebate program to make some of the great deals on our site even better.It’s a way for us to create more "fire" deals for our community and save them more money.We have a 95% approval rate on submitted rebates, but our goal is to get that number to 100%.If you follow the instructions on the rebate offer page and pay close attention to the bullets below, you’ll guarantee a successful claim and get us closer to our goal.
- Make sure you are logged into Slickdeals.
- Whitelist Slickdeals in AdBlock.
- Make sure cookies are enabled in your browser.
- Complete your purchase in one browsing session.
- Make sure we are your last click to the merchant. No cash back or rewards sites.
Did you know we have paid over $2 million in rebates to Slickdeals members? Visit to learn more about how to submit your rebate successfully.