Effer-C
by Douglas Laboratories · powder · 240 grams
- On the market (NIH)
- UPC 3 10539 01208 6
- DSLD label 232254
- Serving 0.5 tsp (Approx. 2.5 g)
- 96 servings
Effer-C by Douglas Laboratories lists 4 ingredients, 4 with an amount per serving of 0.5 tsp, such as 1,175 mg of vitamin C complex, 225 mg of calcium, 125 mg of magnesium complex and 49.5 mg of potassium complex. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2020.
What is in Effer-C?
Each row as the label prints it, per serving of 0.5 tsp. 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 |
|---|---|---|---|
| Vitamin C Complexas Ascorbic Acid, Calcium Ascorbate, Magnesium AscorbateVitamin C complex (Form: as Calcium Ascorbate, Magnesium Ascorbate, Potassium Ascorbate) (Alt. Name: Ascorbic Acid) | 1,175 mg | 1,306% | Higher than 98% of 18,583 products listing vitamin C (median 100 mg). |
| Calciumas Calcium Ascorbate, Calcium CarbonateCalcium Complex (Form: as Calcium Ascorbate, Calcium Carbonate) | 225 mg | 17% | Higher than 71% of 17,831 products listing calcium (median 115 mg). |
| Magnesium Complexas Magnesium Ascorbate, Magnesium Aspartate, Magnesium OxideMagnesium Complex (Form: as Magnesium Oxide, Magnesium Aspartate, Magnesium Ascorbate) | 125 mg | 30% | The label names the compound (Magnesium Complex); its amount is likely the compound's weight, not the magnesium it holds, so it is not placed among other products. |
| Potassium Complexas Potassium Ascorbate, Potassium BicarbonatePotassium Complex (Form: as Potassium Bicarbonate, Potassium Ascorbate) | 49.5 mg | 1% | The label names the compound (Potassium Complex); its amount is likely the compound's weight, not the potassium it holds, so it is not placed among other products. |
Source: NIH ODS Dietary Supplement Label Database, label 232254 (entered August 23, 2020), 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?
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:
- Its 1,175 mg of vitamin C is higher than 98% of the 18,583 vitamin C products that print an amount; 382 list more.
The NIH database records one serving 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?
6 products list the very same ingredients; the nearest amounts come first.
- Buffered Vitamin C PowderNutriCology same ingredients
- Vitamin C Buffered With Calcium, Magnesium And PotassiumBronson Laboratories · off the market same ingredients
- Vitamin C with Calcium, Magnesium and PotassiumBronson same ingredients
- Buffered C CapsulesOrtho Molecular Products same ingredients
- Buffered C CapsulesNatural Healthy Concepts same ingredients
- Buffered C CapsulesNHC Natural Healthy Concepts same ingredients
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 mix 1/2 teaspoon with water or juice daily, or as directed by your health professional. Makes an effervescent drink when mixed in liquid.
- Warnings
- Warning: If you are pregnant, nursing, have any health condition or taking any medication, consult your health professional before using this product.
- Keep out of the reach of children.
- Use only if safety seal is intact.
- Allergens and what it does not contain
- Gluten-free, Non-GMO
- Storage
- Store in a cool, dry place.
Source: label statements in DSLD label 232254.
What else is on the label?
Other ingredients: Citric Acid, Rose Hips.
How many labels does Effer-C have?
5 labels are on file under this name since February 23, 2012: other sizes, label designs and reformulations. The current one leads this page.
- Label 232254 (current) Entered August 23, 2020 · on the market · 240 grams · UPC 3 10539 01208 6
- Label 57447 Entered March 24, 2016 · off the market June 26, 2020 · 240 grams · UPC 3 10539 01208 6
- Label 30778 Entered May 23, 2014 · off the market December 15, 2015 · 240 grams · UPC 3 10539 01208 6
- Label 9817 Entered June 1, 2012 · off the market July 31, 2013 · 240 g · UPC 3 10539 01208 6
- Label 5466 Entered February 23, 2012 · off the market January 20, 2012 · 240 grams · UPC 3 10539 01208 6
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 (distributor), Pittsburgh, PA. All Douglas Laboratories products.