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Supplements: O

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2,905 supplements starting with "O"

Showing 301–350 of 2,905

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Product Ingredients
Olive Leaf Extract Off-market 5
Olive Leaf Extract Off-market 4
Olive Leaf Extract Off-market 7
Olive Leaf Extract 3
Olive Leaf Extract 6
Olive Leaf Extract Off-market 2
Olive Leaf Extract 12
Olive Leaf Extract 2
Olive Leaf Extract 8
Olive Leaf Extract 1
Olive Leaf Extract 3
Olive Leaf Extract 2
Olive Leaf Extract 6
Olive Leaf Extract 2
Olive Leaf Extract - 250 mg 5
Olive Leaf Extract 1000 mg 3
Olive Leaf Extract 150 mg Off-market 5
Olive Leaf Extract 150 mg Off-market 5
Olive Leaf Extract 150 mg Off-market 7
Olive Leaf Extract 250 mg Off-market 2
Olive Leaf Extract 300 mg 4
Olive Leaf Extract 500 mg 5
Olive Leaf Extract 500 mg Off-market 4
Olive Leaf Extract 500 mg Off-market 3
Olive Leaf Extract 500 mg Off-market 3
Olive Leaf Extract 500 mg Off-market 6
Olive Leaf Extract 700 mg Off-market 4
Olive Leaf Extract 700 mg 7
Olive Leaf Extract 750 mg 5
Olive Leaf Extract 750 mg 5
Olive Leaf Extract 750 mg 6
Olive Leaf Extract 9000 mg 6
Olive Leaf Extract Powder 750 mg 1
Olive Leaf Extract With Hawthorn 6
Olive Leaf Glycerite Off-market 4
Olive Leaf Glycerite Off-market 4
Olive Leaf Herb Extract 7
Olive Leaf Liquid Phyto-Caps Off-market 4
Olive Leaf Olea Europea Off-market 6
Olive Leaf Standardized Off-market 4
Olive Oil 1,000 mg Off-market 10
Olive Oil 1000 mg 9
Olive Power 4
Olive Your Heart Basil Flavor Off-market 14
Olive Your Heart Basil Flavored Off-market 15
Olive your Heart Garlic Flavor Off-market 14
Olive Your Heart Garlic Flavored Off-market 16
Olive Your Heart Lemon Flavor Off-market 14
Olive Your Heart Lemon Flavored 16
Olive your Heart Natural Flavor Off-market 14

Letter "O" cohort across the 26-letter alphabet

Counts of products per letter. Letter "O" sits within 2905 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 "O", this is the fastest way to scan all matching products in the NIH Dietary Supplement Label Database (DSLD). The full directory contains 2,905 products under "O", 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 process. 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.

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

Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. This page draws directly on the NIH DSLD, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.