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Supplements: I

Verify with NIH DSLD →

2,410 supplements starting with "I"

Showing 1,201–1,250 of 2,410

Product Ingredients
Iron Chelate with Ferrochel 36 mg 4
Iron Citrate 25 mg Off-market 5
Iron Citrate 25 mg 5
Iron Complete Off-market 12
Iron Complete Off-market 10
Iron Complete Off-market 10
Iron Complete Off-market 24
Iron Complete 27
Iron Complex 29 mg 9
Iron Complex 29 mg Off-market 9
Iron Complex 29 mg 9
Iron Complex Caps Off-market 11
Iron Complex Caps 11
Iron Concentrate 7
Iron Concentrate Off-market 7
Iron Concentrate 4
Iron Daily Oral Spray Off-market 6
Iron Daily Oral Spray Off-market 7
Iron Daily Oral Spray Natural Baked Apple Flavor 7
Iron Ease 45 mg 7
Iron Energy Strawberry Flavor 17
Iron Essentials Off-market 4
Iron Essentials 4
Iron Ferrochel 25 mg Off-market 4
Iron Ferrochel 25 mg 4
Iron Ferrochel 5 mg Off-market 4
Iron Ferrochel 5 mg 4
Iron Ferrochel Ferrous Bisglycinate Chelate 36 mg Off-market 5
Iron Ferrochel Ferrous Bisglycinate Chelate 36 mg 5
Iron Ferronyl Prolonged Release Off-market 4
Iron Ferrous Sulfate 28 mg 6
Iron Food Complex Off-market 27
Iron Free Basic Multi 29
Iron Free Basic Multi 29
Iron Free Daily Multiple 50+ 37
Iron Free Green Source Off-market 53
Iron Free Maximum One Off-market 36
Iron Free Multi Caps Off-market 38
Iron Free Multi Caps Off-market 39
Iron Free Multi Super Daily Off-market 28
Iron Free One Daily Essential Multiple Vitamins Off-market 41
Iron Free One Daily Essential Multiple Vitamins Off-market 41
Iron Free One Daily Multiple 27
Iron Free One Daily Multiple 29
Iron Free Quintabs M 24
Iron Free Quintabs M 24
Iron Free Quintabs-M Off-market 23
Iron Free Quintabs-M Off-market 23
Iron Free Vit-Min 75+ Off-market 36
Iron Gluconate 13

Letter "I" cohort across the 26-letter alphabet

Counts of products per letter. Letter "I" sits within 2410 entries.

products
Source NIH Dietary Supplement Label Database (DSLD) As of 2026

Top 10 letters by total product count

Letters with the most product entries, selecting a letter narrows the directory.

products
Source NIH Dietary Supplement Label Database (DSLD) As of 2026

Bottom 10 letters by total product count

Less-populated letters, useful for spotting niche-named brands.

products
Source NIH Dietary Supplement Label Database (DSLD) As of 2026

Why an alphabetical letter index?

The alphabetical browse exists because most casual searches start from a known product or brand name. If you remember the bottle in your cabinet starts with "I", this is the fastest way to scan all matching products in the NIH Dietary Supplement Label Database (DSLD). The full directory contains 2,410 products under "I", sortable by name, newest entry, or brand. For comparing products within a category (vitamin D, fish oil, multivitamins), use the type-filtered listing instead. For brand-level analysis, jump to the brands directory.

Per-product detail pages show the declared ingredient list, serving size, market status, and Daily Value (DV) percentages, when those values were submitted to the NIH on the original label filing. Many DSLD records include only structural ingredient lists without the per-row Supplement Facts panel; in those cases the detail page renders "Not disclosed on label" rather than a fabricated estimate. Editorial commentary and ingredient context is compiled by our editorial team. Inclusion in the directory is a label record, not an FDA endorsement, quality verification, or clinical efficacy claim. Always verify amounts on the physical label and consult a healthcare provider before starting any supplement, particularly if pregnant, nursing, taking prescription medication, or managing a medical condition.

Related

Data sourced from the NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD). See our methodology for details.