Guides · 6 min read
Protein Powder Shopify Upsells: Refills, Stacks & Shakers After Checkout
How sports nutrition brands sell extra tubs, flavor stacks, and shakers on Shopify's post-purchase page without hurting checkout conversion.
Protein buyers are loyal to flavor and brand. The best moment to offer a refill or complementary SKU is right after they pay — not while they're still deciding whether to complete checkout.
Offers that convert for protein brands
- 5lb tub refill at 10–15% off the same flavor
- Shaker bottle + sample stack under $20
- Creatine or electrolyte add-on after whey purchase
- Twin tub bundle for household gym setups
Why post-purchase beats cart bundles
Large cart bundles increase sticker shock on mobile. Post-purchase keeps the core checkout lean while still capturing incremental AOV from motivated buyers.
Try RefillPost on your store
Start free — 5% on upsells, or Growth/Pro flat. Live in about five minutes.
Install on Shopify — start free