iHerb Supplement Shopping: Label, Serving Cost, and Safety Checklist

Supplement shopping should begin with the label and your health needs, not with a coupon percentage. Two bottles can use similar product names while differing in serving size, ingredient amount, formulation, allergens, quantity, and directions. A lower bottle price may also cost more per serving.

Use this checklist to compare products before opening an iHerb promo or Autoship offer. It is a shopping framework, not medical advice. Discuss supplements with a qualified health professional, especially if you take medication, have a medical condition, are pregnant, or are preparing for surgery.

Read the Supplement Facts panel first

Record the serving size, amount per serving, number of servings, other ingredients, allergen statements, and directions. The FDA explains that dietary supplements are not approved for safety and effectiveness before they are sold in the same way as drugs. The manufacturer is responsible for meeting applicable safety and labeling requirements.

Label field	Question to ask	Common mistake
Serving size	How many capsules, scoops, or gummies make one serving?	Comparing bottle counts instead of servings
Amount per serving	Does it match the amount discussed with a professional?	Assuming more is always better
Other ingredients	Are there allergens, sweeteners, coatings, or fillers to review?	Reading only the front label
Directions	How often is the product intended to be used?	Calculating monthly cost from the wrong frequency

Calculate cost per serving

Divide the final product price by the number of servings, then include shipping, tax, and any import or customs cost relevant to your destination. If a serving requires two capsules, a 120-capsule bottle provides 60 servings, not 120. Repeat the calculation after a promo code or rewards credit is applied.

Do not use a discount to increase the dose

The FDA advises consumers to take supplements only as described on the label and warns that some ingredients can interact with medicines, affect lab tests, or create risks around surgery. Avoid treating a larger dose, multi-ingredient blend, or “natural” label as automatically better.

Check seller, storage, and expiration details

Confirm that the listing is sold through the expected iHerb channel, inspect product images and label updates, and review storage requirements. For heat-sensitive products, consider season, destination, and delivery time. Buy a quantity you can use within the labeled period rather than maximizing a cart discount.

Evaluate Autoship separately

Autoship can reduce repeat-order work, but only for a product and schedule you already use consistently. Compare the first-order price with future-order terms, delivery frequency, edit controls, and cancellation path. Set a reminder before the next shipment until your usage pattern is predictable.

Know the return window before ordering

iHerb currently states that most products purchased through iHerb have a 30-day return window and iHerb brand products have an extended 90-day window, subject to review and policy details. International return labels are not prepaid. Check the current policy for your location before placing a large order.

Final iHerb shopping checklist

1. Confirm with a health professional whether the supplement is appropriate for you.
2. Compare serving size, amount per serving, ingredients, and directions.
3. Calculate final cost per serving after shipping and discounts.
4. Check expiration, storage needs, and a realistic order quantity.
5. Review Autoship frequency and cancellation controls separately.
6. Use the current iHerb deals page only after the product decision is complete.

Sources checked

• FDA 101: Dietary Supplements
• iHerb return policy