PlainVitamins

botanical

Common Periwinkle supplements

Half of the 5 common periwinkle supplements in the NIH label database that print an amount list 650 mg or less per serving; the middle half list 450 mg to 970 mg (DSLD version 9.4.0, January 2026).

Products listing it
275 print an amount; 22 list it inside a blend without an amount
Median per serving
650 mgmiddle half 450 mg to 970 mg

How much common periwinkle do supplements contain?

The median product lists 650 mg per serving. One in ten lists 192 mg or less, one in ten 1,509 mg or more. The amount printed most often is 20 mg (1 product).

Products by amount of common periwinkle per serving

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

Common Periwinkle: products by amount per serving30 mg100 mg300 mg1,000 mg
Common Periwinkle: products by amount per serving30 mg100 mg300 mg1,000 mg
Common Periwinkle: products by amount per serving30 mg100 mg300 mg1,000 mg
Common Periwinkle: products by amount per serving30 mg100 mg300 mg1,000 mg
Common Periwinkle: products by amount per serving30 mg100 mg300 mg1,000 mg
The amounts printed most often
Amount per servingProductsFor example
20 mg1
450 mg1 Periwinkle 450 mg 4:1 Extract (TerraVita Premium Collection)
650 mg1 Periwinkle 650 mg (Nature's Answer)
970 mg1 Periwinkle (Herbal Terra)
1,869 mg1 Vinca (Pure Herbs)

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 common periwinkle?

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).

In which products and brands?

Products listing common periwinkle by DSLD product type

Common Periwinkle by product typeBotanical4Botanical with Nutrients1
Common Periwinkle by product typeBotanical4Botanical with Nutrients1
Common Periwinkle by product typeBotanical4Botanical with Nutrients1
Common Periwinkle by product typeBotanical4Botanical with Nutrients1
Common Periwinkle by product typeBotanical4Botanical with Nutrients1

Brands listing it most: LifeSeasons (1), TerraVita Premium Collection (1), Nature's Answer (1), Herbal Terra (1), Pure Herbs (1).

Every product listing common periwinkle

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

Where next?