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Other · Supplement ingredient

capsule

capsule is listed on 14,234 U.S. supplement product labels in the NIH DSLD, #15 of 4,614 by label frequency.

14,234
Products
#15 of 4,614
By frequency
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Verify with NIH DSLD → · FDA Daily Value reference → · Page 37 of 285

How common is capsule?

Number of supplement labels listing capsule vs nearby other ingredients

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

Products containing capsule

L-Lysine 500 mg
Klaire Labs
4 ingredients · Amino acid/Protein
On Market
L-Lysine 500 mg
Carlson
4 ingredients · Amino acid/Protein
On Market
L-Lysine 500 mg
Carlson
4 ingredients · Amino acid/Protein
On Market
L-Lysine 500 mg
Bluebonnet
5 ingredients · Amino acid/Protein
On Market
L-Lysine 500 mg
Metabolic Maintenance
3 ingredients · Amino acid/Protein
On Market
L-Lysine 500 mg
Bluebonnet
5 ingredients · Amino acid/Protein
On Market
L-Lysine 500 mg
Natural Factors
5 ingredients · Amino acid/Protein
On Market
L-Lysine Basics
MRM
3 ingredients · Amino acid/Protein
On Market
L-Lysine HCL 500 mg
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Lysine HCL 500 mg
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Lysine Monolaurin 1:1 Ratio
Solaray
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Methionine 500 mg
Solaray
3 ingredients · Amino acid/Protein
On Market
L-Methionine 500 mg
Bluebonnet
4 ingredients · Amino acid/Protein
On Market
L-Methionine 500 mg
Metabolic Maintenance
2 ingredients · Amino acid/Protein
On Market
L-Methionine 500 mg
Bluebonnet
4 ingredients · Amino acid/Protein
On Market
L-Methionine 550 mg
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Methionine 550 mg
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Methionine 550 mg
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Methionine 550 mg
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-OptiZinc 30 mg
Vitacost
5 ingredients · Mineral
On Market
L-OptiZinc 30 mg + Copper
Natural Grocers by Vitamin Cottage
6 ingredients · Mineral
On Market
L-OptiZinc 30 Milligrams
NutraBio
3 ingredients · Mineral
On Market
L-Ornithine 500 mg
NOW
4 ingredients · Amino acid/Protein
On Market
L-Ornithine 500 mg
Bluebonnet
5 ingredients · Amino acid/Protein
On Market
L-Ornithine 500 mg
Bluebonnet
5 ingredients · Amino acid/Protein
On Market
L-Ornithine 500 mg
Nutricost
5 ingredients · Amino acid/Protein
On Market
L-Phenylalanine
Metabolic Maintenance
4 ingredients · Amino acid/Protein
On Market
L-Phenylalanine 500 mg
NOW
2 ingredients · Amino acid/Protein
On Market
L-Phenylalanine 500 mg
Bluebonnet
4 ingredients · Amino acid/Protein
On Market
L-Phenylalanine 500 mg
Bluebonnet
4 ingredients · Amino acid/Protein
On Market
L-Phenylalanine 500 mg
Metabolic Maintenance
4 ingredients · Amino acid/Protein
On Market
L-Phenylalanine 500 Milligrams
NutraBio
2 ingredients · Amino acid/Protein
On Market
L-Proline 550 mg
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Proline 550 mg
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Proline 550 mg
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Proline 550 mg
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Serine 2000 mg
Double Wood Supplements
3 ingredients · Amino acid/Protein
On Market
L-Taurine 325 mg
Kirkman
2 ingredients · Amino acid/Protein
On Market
L-Taurine 325 mg
Kirkman
2 ingredients · Amino acid/Protein
On Market
L-Taurine SAP
NFH
3 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine & Caffeine
Nutriana
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 100 mg
CHK Nutrition
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 100 mg
Seeking Health
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 100 mg
Healthy Origins
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 100 mg
Healthy Origins
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Double Wood Supplements
3 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Woodstock Vitamins
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Nutralife
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Advance Physician Formulas
2 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Metabolic Maintenance
2 ingredients · Non-Nutrient/Non-Botanical
On Market

Nearby Ingredients in Other

Other ingredients in the Other category cataloged in the NIH DSLD. Useful for comparing how common different nutrients are across the US supplement market.

Compare capsule vs Calories →

Calories
26,474 products · Other
Water
23,862 products · Other
Glycerol
19,903 products · Other
Flavor
16,727 products · Other
Magnesium stearate
16,228 products · Other

Nationwide ingredients with similar DSLD presence

Two peer sets for capsule: closest on total DSLD label listings (14,234 here) and closest on distinct brands that list it (965 here). Peers exclude the same DSLD category, and rows stay link-disjoint so each axis is a distinct neighborhood.

Similar label frequency

Nearest other ingredients by distinct DSLD product labels (floored at ≥50), outside this category.

Similar brand breadth

Nearest other ingredients by distinct brands listing them (floored at ≥100 brands), distinct from the label-frequency row.

Frequently asked about capsule

How many supplement products contain capsule? ▼
14,234 supplement product labels in the NIH DSLD currently lists capsule as an ingredient. By label frequency it ranks #15 of 4,614 among ingredients PlainVitamins ranks (same sort as /rankings/most-common-ingredients). Browse them below.

Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD). Regulatory reference: Source: Dietary Supplement Health and Education Act (DSHEA), 1994, 21 U.S.C. § 321(ff).

Disclaimer, Not Medical Advice: Information on this page is based on manufacturer-declared label data and is provided for educational and reference purposes only. It does not constitute medical, nutritional, or health advice. Consult a licensed healthcare provider before starting, stopping, or combining any supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.

Read our methodology , how this data is sourced, computed, and verified.

Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. Ingredient figures are computed directly from 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.