PlainVitamins

botanical

Fennel supplements

Half of the 315 fennel supplements in the NIH label database that print an amount list 72 mg or less per serving; the middle half list 26.5 mg to 215 mg (DSLD version 9.4.0, January 2026). The 43 products whose only supplement ingredient is fennel list a median of 480 mg.

Products listing it
1,197315 print an amount; 863 list it inside a blend without an amount
Median per serving
72 mgmiddle half 26.5 mg to 215 mg

How much fennel do supplements contain?

The median product lists 72 mg per serving. One in ten lists 10 mg or less, one in ten 556 mg or more. The amount printed most often is 50 mg (28 products).

Products by amount of fennel per serving

315 products, log scale; extreme 0.2% at each end left out of the drawing.

Fennel: products by amount per serving3 mg10 mg30 mg100 mg1,000 mg
Fennel: products by amount per serving3 mg10 mg30 mg100 mg300 mg1,000 mg
Fennel: products by amount per serving3 mg10 mg30 mg100 mg300 mg1,000 mg
Fennel: products by amount per serving3 mg10 mg30 mg100 mg300 mg1,000 mg
Fennel: products by amount per serving3 mg10 mg30 mg100 mg300 mg1,000 mg
The amounts printed most often
Amount per servingProductsFor example
50 mg28 Cape Aloe Lax (Vitabase); Bitters Extra (Vitanica); Regulari-T Bowel Support (LifeSeasons)
100 mg24 Elimi-Tox PM Cleansing Formula (Bronson Laboratories); DIU - Plus (Nutri-West); Cleanse And Detox With Acai (The Vitamin Shoppe)
25 mg16 Advanced Detoxapure Colon Cleanser (Vitamin World); Colon Cleanser (Vitamin World); Slim-Vantage Plus (Indiana Botanic Gardens)
5 mg13 Enzyme Complex With Herbs (VitaCeutical Labs); Enzyme Complex With Herbs (Vitamer Laboratories); Gripe Water (Mommy's Bliss)
15 mg13 Carbo Quencher (VitaCeutical Labs); Calorie Quencher (Vitamer Laboratories); Digestive Enzymes with Pre and Probiotics (Zenwise)
10 mg9 Vegi Source (Bronson Laboratories); Enzyme Capsule (Bronson Laboratories); Castor Oil 650 mg (NOW)
20 mg9 AM/PM Full Body Cleanse (Greens First Pro); Digestive Enzymes (Modere); GastroVen (Premier Research Labs)
60 mg9 Fennel (Sweet) (doTERRA); Diuretic (Remedys Nutrition); Organic Fennel (Zongle Therapeutics)
450 mg8 Fennel Seed 450 mg (TerraVita); Fennel Seed Powder (TerraVita); Fennel Seed 450 mg (TerraVita Premium Collection)
150 mg7 Recovery Zymes (Michael's Naturopathic Programs); Digestive Enzymes (MH Michael's Health Naturopathic Programs); Coloclear Extra (Higher Nature)

Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).

Which products list the most fennel?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

Have the amounts changed over the years?

Products whose current label entered DSLD in 2013 list a median of 43.2 mg; those entered in 2025, 70 mg.

Median fennel per serving by the year the label entered DSLD (years with 20+ products)
YearProductsMedian per serving
20132243.2 mg
20212450 mg
20224260 mg
202339100 mg
20243687.5 mg
20253170 mg

Source: DSLD label entry dates and amounts, current labels.

In which products and brands?

Products listing fennel by DSLD product type

Fennel by product typeOther Combinations148Botanical136Botanical with Nutrients30Fat/Fatty Acid1
Fennel by product typeOther Combinations148Botanical136Botanical with Nutrients30Fat/Fatty Acid1
Fennel by product typeOther Combinations148Botanical136Botanical with Nutrients30Fat/Fatty Acid1
Fennel by product typeOther Combinations148Botanical136Botanical with Nutrients30Fat/Fatty Acid1
Fennel by product typeOther Combinations148Botanical136Botanical with Nutrients30Fat/Fatty Acid1

Brands listing it most: Nature's Way (13), TerraVita Premium Collection (8), Gaia Herbs (7), LifeSeasons (6), Traditional Medicinals (6), NOW (5), Remedys Nutrition (5), VitaCeutical Labs (4), VSN Vital Strength Nutrition (4), Vitamer Laboratories (4).

Every product listing fennel

1,197 products, A to Z by name (page 21 of 24), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

Where next?