Head-to-head comparison of iHerb and Vital Proteins on coupon depth, loyalty program value, and post-promo cost.
iHerb (founded 1996, Irvine, CA) and Vital Proteins (founded 2013, Chicago, IL) are two of the most-shopped brands in the Supplements vertical. iHerb focuses on global online retailer of natural supplements, beauty and grocery items with deep international shipping. Vital Proteins focuses on collagen peptides and beauty-from-within supplements with pasture-raised, grass-fed sourcing.
On promo-code depth, iHerb's typical site-wide discount range is 15-25% before stacking, with the Rewards Credit program adding another tier of recurring value. Vital Proteins's typical promo range is similar, but the Vital Rewards program (Tiered program: every customer earns 1 point per $1; tier upgrades unlock free shipping thresholds, double-points days and exclusive new-product access.) often produces a different effective per-order savings depending on whether you're a one-time buyer or a subscriber.
Shipping and returns differ in ways that matter: iHerb — Ships to 180+ countries with calculated rates by weight; many destinations qualify for free shipping above a threshold. Vital Proteins — Free standard shipping on orders $50+; subscribe & save 25% with free shipping every order. For higher-AOV orders the free-shipping threshold can swing the head-to-head decision more than the headline promo code does.
Recommendation: pick iHerb if you value California Gold Nutrition Omega-3 and the Rewards Credit program structure; pick Vital Proteins if Collagen Peptides 20 oz is your primary purchase or if you prefer the Vital Rewards mechanic.
Either way, both brands are tracked daily by DealPulse, so the live promo codes on the iHerb brand page and the Vital Proteins brand page reflect the most recent verified savings — check both before choosing where to spend.
Verified codes referenced in this guide
GNC: 20% off with promo code
site-wide promo code
GNC: 15% off with promo code
first order with email signup
GNC: 25% off with promo code
select bundle deals
GNC: $10 off with promo code
orders over $50
GNC: Free shipping with promo code
no minimum order
GNC: 30% off sale
weekly flash sale on best-sellers
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