Does the iHerb Discount Code Work for Existing Customers?
Here’s the honest answer: welcome codes like TBV598 are built for new customers, the same way most referral-style discounts work across retail. If you’ve already placed an iHerb order under your account, re-entering TBV598 may not trigger the discount a second time — that’s standard for this kind of code, not a bug.
What actually works for existing customers is iHerb’s own Rewards program. Once you’ve placed a single order (no minimum required), iHerb emails you a personal referral code of your own, usually within an hour of your shipping confirmation. Share that code with friends and family, and you earn credit — not a discount on your own next order, but real account credit you can spend on future iHerb purchases, based on a percentage of what your referrals buy.
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How to Enter the iHerb Discount Code
Add items to your iHerb cart.
Click the shopping cart icon in the top right corner of iherb.com — the coupon field is on the Cart page, not at Checkout.
Code: TBV598
Enter TBV598 in the promo code box, or just use our link and skip typing it in.
Confirm the discount applied before you pay — 10% on house brands, 5% on everything else.
So the practical path for existing customers is: use our TBV598 link if you haven’t ordered from iHerb before, and if you have, check your iHerb account for your own personal Rewards code to start earning credit instead.
One thing worth noting: this discount has historically applied even to small orders, so it’s possible to end up paying little more than shipping on a cheap item. There’s no cap on the cart size either, so it works whether you’re buying one bottle of vitamins or restocking your whole supplement shelf.
iHerb Rewards: What Existing Customers Actually Get
iHerb Rewards is separate from TBV598 and it’s where existing-customer value really lives. After your first order, you’re eligible to share your own code and start earning. The rewards accumulate as account credit, which you can put toward future orders once your balance clears iHerb’s cash-out threshold — check your account’s Rewards page for the current numbers, since iHerb sets and adjusts those figures itself.
One honest note: iHerb also runs its own public sitewide sales — seasonal promos, category discounts, first-order codes posted directly on iherb.com — and those occasionally beat a referral code like TBV598. It’s worth a quick check of the site before you check out.
Frequently Asked Questions
Will TBV598 work if I’ve ordered from iHerb before?
Probably not — welcome codes like this one are generally new-customer offers. If it doesn’t apply at checkout, that’s why. Existing customers should use their own personal Rewards code instead, found in their iHerb account.
Where do I actually enter the code?
On the Cart page, not Checkout. Click the shopping cart icon at the top of iherb.com to find the field, or use our link above to skip typing it in.
How do I get my own iHerb referral code as an existing customer?
Place one order (no minimum required) and iHerb will email you a personal code, usually within an hour of your shipping confirmation. Share it with friends and family to start earning account credit.
Is there a minimum order size for TBV598?
Historically no — the code has applied even to small orders. iHerb can change cart rules at any time, so confirm the discount actually shows up before you pay.
Grab code TBV598.
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TBV598 at iHerb — hand-checked, at last check.
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