Prim Royal-V Standardized Herbal Extract
by Douglas Laboratories · capsule · 60 vegetarian capsules
- On the market (NIH)
- UPC 3 10539 00692 4
- DSLD label 9570
- Serving 1 vegetarian capsule
- 60 servings
Prim Royal-V Standardized Herbal Extract by Douglas Laboratories lists 3 ingredients, 3 with an amount per serving of 1 vegetarian capsule, such as 500 mg of primrose oil powder. Its current label entered the NIH Dietary Supplement Label Database on June 25, 2012.
What is in Prim Royal-V Standardized Herbal Extract?
Each row as the label prints it, per serving of 1 vegetarian capsule. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Primrose Oil PowderPrimrose Oil Powder CorrectedName: Primrose Oil PlantPart: seed Note: Standardized to supply a typical analysis of | 500 mg | 50% of 300 products listing evening primrose oil give more (median 500 mg). Per day at the most servings: 3,000 mg. | |
| Gamma-Linolenic Acid | 30 mg | 81% of 740 products listing gamma linolenic acid give more (median 90 mg). Per day at the most servings: 180 mg. | |
| Linoleic Acid | 225 mg | 58% of 801 products listing linoleic acid give more (median 350 mg). Per day at the most servings: 1,350 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 9570 (entered June 25, 2012), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
The NIH database records 3 to 6 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
3 products list the very same ingredients; the nearest amounts come first.
- Evening Primrose Oil 500 mgThompson same ingredients
- Evening Primrose Oil 500 mgBasic Vitamins same ingredients
- Evening Primrose Oil 1,300 mgNewtonEverett same ingredients
- Evening Primrose Oil 500 mgVitamin World 3 shared, 88% alike
- Evening Primrose Oil 500 mgNature's Bounty 3 shared, 88% alike
- Evening Primrose OilBronson 3 shared, 88% alike
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- Suggested Usage: As a dietary supplement, adults take 1 capsule 3 to 6 times daily, or as advised by your health care professional. If digestive irritation occurs, take with meals.
- Warnings
- Stop use and consult your health care professional if allergic reactions occur.
- Note: If pregnant or nursing, consult your healthcare professional before using this product.
- KEEP OUT OF REACH OF CHILDREN.
- Tamper resistant package, do not use if outer seal is missing.
- Allergens and what it does not contain
- This product contains NO yeast, wheat gluten, soy protein, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.
- Storage
- For optimal storage conditions, store in a cool, dry place. (59(0)-77(0)F/15(0)-25(0)C) (35-65% relative humidity)
Source: label statements in DSLD label 9570.
What else is on the label?
Other ingredients: Silica, Vegetable Stearate.
How many labels does Prim Royal-V Standardized Herbal Extract have?
One label is on file, entered on June 25, 2012.
- Label 9570 (current) Entered June 25, 2012 · on the market · 60 vegetarian capsules · UPC 3 10539 00692 4
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Douglas Laboratories (manufacturer), Pittsburgh, PA. All Douglas Laboratories products.