PlainVitamins

OptiFerin-C

by Pure Encapsulations · capsule · 60 capsules

  • On the market (NIH)
  • UPC 7 66298 02326 7
  • DSLD label 294035
  • Serving 1 capsule
  • 60 servings

OptiFerin-C by Pure Encapsulations lists 3 ingredients, 3 with an amount per serving of 1 capsule, such as 100 mg of vitamin C, 11 mg of calcium and 28 mg of iron. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2023.

What is in OptiFerin-C?

Each row as the label prints it, per serving of 1 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).

OptiFerin-C: Supplement Facts rows against the market (DSLD label 294035, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Calcium Ascorbate100 mg111%Vitamin C in OptiFerin-C against 18,583 products100 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg100 mg

50% of 18,583 products listing vitamin C give more (median 100 mg). Per day at the most servings: 300 mg.

Calciumas Calcium Ascorbate11 mg1%Calcium in OptiFerin-C against 17,831 products11 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg11 mg

96% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 33 mg.

Ironas Iron Bisglycinate28 mg156%Iron in OptiFerin-C against 6,910 products28 mg per serving; the middle half of products list 1.2 mg to 18 mg, the median 5 mg.DV 18 mgUL 45 mg28 mg

Higher than 92% of 6,910 products listing iron (median 5 mg). Per day at the most servings: 84 mg. 1.9 times the adult UL a day.

Source: NIH ODS Dietary Supplement Label Database, label 294035 (entered August 23, 2023), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • 96% of the 17,831 products that print an amount of calcium list more than its 11 mg of calcium (median 115 mg).
  • At 3 servings a day, the most its directions give, the label lists 84 mg of iron, 1.9 times the adult Tolerable Upper Intake Level.

The NIH database records 1 to 3 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?

4 products list the very same ingredients; the nearest amounts come first.

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
Recommendations: As a dietary supplement, take 1 capsule, 1-3 times daily, with meals.
Warnings
Warning: If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use.
Warning: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of the reach of children. In case of accidental overdose, call a doctor or poison control center immediately.
Use only if safety seal is intact.
Allergens and what it does not contain
Certified gluten free by the Gluten-Free Certification Organization, www.gluten.org
Gluten-free, non-GMO & hypoallergenic
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 294035.

What else is on the label?

Other ingredients: Cellulose, Water, Ascorbyl Palmitate, hypoallergenic Plant Fiber.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GFCO.org (Gluten-Free Certification Organization). Listed with: Certified gluten-free (GFCO) (a seal is the label's claim; the certifier's own list confirms it).

How many labels does OptiFerin-C have?

5 labels are on file under this name since February 25, 2019: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 294035 (current) Entered August 23, 2023 · on the market · 60 capsules · UPC 7 66298 02326 7
  2. Label 246356 Entered March 25, 2021 · on the market · 60 capsules · UPC 7 66298 00827 1
  3. Label 246266 Entered March 25, 2021 · off the market July 21, 2022 · 60 capsules · UPC 7 66298 02326 7
  4. Label 207903 Entered November 21, 2019 · off the market September 25, 2017 · 60 capsules
  5. Label 184746 Entered February 25, 2019 · off the market December 16, 2020 · 60 capsules · UPC 7 66298 00827 1

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Pure Encapsulations (manufacturer), Sudbury, MA. All Pure Encapsulations products.

Where next?