Optimal Vitamin C Plus

by Seeking Health · powder · 5.78 ounces

On the market (NIH)
UPC 8 10007 52129 9
DSLD label 322696
Serving 4.1 g (1 Scoop)
40 servings

Optimal Vitamin C Plus by Seeking Health lists 6 ingredients, 6 with an amount per serving of 4.1 g, such as 2,600 mg of vitamin C, 28 mg of calcium, 220 mg of magnesium and 99 mg of potassium. Its current label entered the NIH Dietary Supplement Label Database on December 21, 2024.

What is in Optimal Vitamin C Plus?

Each row as the label prints it, per serving of 4.1 g. 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).

Optimal Vitamin C Plus: Supplement Facts rows against the market (DSLD label 322696, January 2026 release)
Ingredient	Amount	% DV	Among products listing it
Vitamin Cas Ascorbic Acid, Calcium Ascorbate, Magnesium Ascorbate	2,600 mg	2,889%	Higher than over 99% of 18,583 products listing vitamin C (median 100 mg). 1.3 times the adult UL a day.
Calciumas Calcium Ascorbate	28 mg	2%	86% of 17,831 products listing calcium give more (median 115 mg).
Magnesiumas Magnesium Ascorbate	220 mg	52%	Higher than 82% of 14,003 products listing magnesium (median 86 mg).
Potassiumas Potassium Bicarbonate	99 mg	2%	49% of 11,614 products listing potassium give more (median 99 mg).
Quercetinas Quercetin Dihydrate	20 mg		84% of 1,548 products listing quercetin give more (median 100 mg).
Luteolinas Sophora japonica	20 mg		52% of 77 products listing luteolin give more (median 30 mg).

Source: NIH ODS Dietary Supplement Label Database, label 322696 (entered December 21, 2024), 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:

At 1 serving a day, the most its directions give, the label lists 2,600 mg of vitamin C, 1.3 times the adult Tolerable Upper Intake Level.

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?

The products whose ingredient lists overlap most with Optimal Vitamin C Plus's, rare ingredients counting for more.

SunBalanceTomorrow's Nutrition Pro 2 shared, 42% alike
Hydrate Citrus FlavoredBeachBody Performance 4 shared, 41% alike
Buffer-C pH Controlled 1000 mgCountry Life 4 shared, 41% alike
Luteolin 100 mgSuperSmart 1 shared, 38% alike
Luteolin 100 mgDouble Wood Supplements 1 shared, 38% alike
Luteolin 100 mgaSquared Nutrition 1 shared, 38% 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 use: Mix 1 scoop daily in filtered water or beverage of choice, or use as directed by your healthcare professional.
Warnings: Caution: Children and pregnant or lactating women should consult their healthcare professional prior to use. Storage: Keep closed in a cool, dry place out of reach of children.; Caution: Children and pregnant or lactating women should consult their healthcare professional prior to use.; Do not use if tamper seal is damaged.
Allergens and what it does not contain: Does not contain: Milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soy, gluten, GMO, artificial colors, or artificial flavors.
Storage: Storage: Keep closed in a cool, dry place out of reach of children.

Source: label statements in DSLD label 322696.

What else is on the label?

Other ingredients: Malic Acid, Monk Fruit Extract, Lemon Flavor, Natural.

How many labels does Optimal Vitamin C Plus have?

One label is on file, entered on December 21, 2024.

Label 322696 (current) Entered December 21, 2024 · on the market · 5.78 ounces · UPC 8 10007 52129 9

DSLD also links this label to: Optimal Vitamin C (image difference, same product), Optimal Vitamin C (image difference, same product).

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

Who makes it?

The label names Seeking Health, LLC (distributor), Bellingham, WA. All Seeking Health products.