What is the iHerb affiliate program?
Global health and wellness retailer offering vitamins, supplements, and natural personal care products. The iHerb affiliate program pays publishers 5%-25% commission on qualifying referrals through a pay-per-sale model.
Tracking runs on a 7 Days cookie window, so a visitor who clicks your link and converts inside that period is still attributed to your account. That matters for vitamins traffic, where buyers often research across several sessions before purchasing.
iHerb commission rate, cookie and payout structure
Commission: 5%-25% commission. Structure: Pay-per-Sale. Cookie: 7 Days cookie window. Commission duration: One-time.
Payouts are made per qualifying action rather than as recurring revenue, which means volume drives income. Pages that rank for comparison and alternatives queries typically produce the most consistent conversions here.
Who should join the iHerb affiliate program?
This program fits publishers covering vitamins, supplements and wellness. If your audience already searches for vitamins tools, reviews or alternatives, iHerb slots into existing content without forcing a new topic cluster.
It is a weaker fit for general-interest or low-intent traffic. iHerb converts best on pages built around a specific problem — pricing questions, migration from a competitor, or a use-case walkthrough — rather than broad top-of-funnel posts.
Comparing options? Lemme, Grüns and Performance Lab® target a similar audience. See the full affiliate program directory.
How to join and promote iHerb
Apply through the official iHerb affiliate page (iherb.com). Approval usually requires a live site with relevant content, a visible affiliate disclosure and a short description of how you plan to promote the product.
Once approved, place links where purchase intent is highest: comparison tables, "best of" roundups, alternatives pages and step-by-step tutorials. Disclose the relationship above the fold and keep claims about 5%-25% commission terms accurate, since program terms change without notice.
Related reading: Top 10 Best Affiliate Programs For Weight Loss (2026), Pet Insurance Affiliate Programs Usa (2026).
Strengths and limitations
Strengths: 5%-25% commission, a 7 Days cookie window, and a product with an established position in vitamins.
Limitations: terms are set by the merchant and can be revised, attribution ends when the cookie expires, and approval is discretionary. Verify current rates on the official program page before publishing figures in 2026.
iHerb affiliate program FAQ
How much does the iHerb affiliate program pay?
iHerb pays 5%-25% commission on qualifying referrals through a pay-per-sale model. Rates can be adjusted by the merchant, so confirm the current terms on the official program page.
How long is the iHerb affiliate cookie?
iHerb uses a 7 Days cookie window. Conversions that happen after the window closes are not attributed to your account.
Is the iHerb affiliate program free to join?
Yes. Joining is free, but applications are reviewed and approval depends on your site's content and traffic relevance.
Is iHerb a good affiliate program for beginners?
It works for beginners who already publish vitamins content. Without topical relevance, approval and conversions are both harder — build a few problem-focused articles first, then apply.
