Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU)

by Natural Factors · softgel capsule · 150 enteripure softgels

  • On the market (NIH)
  • UPC 0 68958 35492 7
  • DSLD label 220306
  • Serving 1 softgel

Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU) by Natural Factors lists 5 ingredients, 5 with an amount per serving of 1 softgel, such as 25 mcg (1,000 IU) of vitamin D3 and 1,407 mg of pharmaceutical grade fish oil concentrate, beside 2 Nutrition Facts rows (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on May 22, 2020.

What is in Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU)?

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

Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU): Supplement Facts rows against the market (DSLD label 220306, January 2026 release)
IngredientAmount% DVAmong products listing it
Calories15 Calories
Total Fat1.5 g2%Fat (unspecified) in Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU) against 11,965 products1.5 g per serving; the middle half of products list 1 g to 2.5 g, the median 1.5 g.1.5 g

44% of 11,965 products listing fat (unspecified) give more (median 1.5 g).

Cholesterol5 mg2%Cholesterol in Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU) against 5,275 products5 mg per serving; the middle half of products list 5 mg to 45 mg, the median 15 mg.5 mg

71% of 5,275 products listing cholesterol give more (median 15 mg).

Vitamin D3as Cholecalciferol, LanolinVitamin D3 (Form: Lanolin) (Alt. Name: Cholecalciferol) Note: 1000 IU25 mcg (1,000 IU)125%Vitamin D in Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU) against 14,175 products25 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg25 mcg

Higher than 59% of 14,175 products listing vitamin D (median 15 mcg).

pharmaceutical grade Fish Oil concentrateas Anchovy, Mackerel, Sardinepharmaceutical grade Fish Oil concentrate (Form: Anchovy, Sardine, and/or Mackerel) Note: molecularly distilled, ultra purified1,407 mgFish Oil in Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU) against 1,990 products1.41 g per serving; the middle half of products list 1 g to 2 g, the median 1.2 g.1.41 g

Higher than 66% of 1,990 products listing fish oil (median 1.2 g).

Omega-3 Fatty Acids900 mgOmega-3 in Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU) against 2,714 products900 mg per serving; the middle half of products list 230 mg to 1,000 mg, the median 500 mg.900 mg

Higher than 70% of 2,714 products listing omega-3 (median 500 mg).

Docosahexaenoic Acid Ethyl Ester600 mgDHA in Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU) against 3,627 products900 mg per serving; the middle half of products list 104 mg to 400 mg, the median 232 mg.900 mg

Higher than 96% of 3,627 products listing DHA (median 232 mg).

Docosahexaenoic Acid Ethyl Ester300 mg

Source: NIH ODS Dietary Supplement Label Database, label 220306 (entered May 22, 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 900 mg of docosahexaenoic acid ethyl ester (filed by NIH under DHA) (2 rows of the label added together) is higher than 96% of the 3,627 DHA products that print an amount; 121 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?

The products whose ingredient lists overlap most with Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU)'s, rare ingredients counting for more.

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: 1 softgel per day or as directed by a health professional.
Warnings
Cautions: As with any supplement, consult your health professional before use if you are pregnant, breastfeeding, or trying to conceive, or if you are taking medication, have a medical condition, or anticipate a surgery.
Keep out of the reach of children.
Sealed for your protection. Do not use if seal is broken.
Allergens and what it does not contain
Molecularly distilled and guaranteed for purity and safety from environmental pollutants like PCBs and mercury or other harmful compounds, RxOmega-3 surpasses the strictest international standards for quality.
Contains no artificial colors, preservatives, or sweeteners; no dairy, sugar, wheat, gluten, yeast, soy, egg, shellfish, salt, tree nuts, or GMOs.
Storage
For freshness, store in a cool, dry place.

Source: label statements in DSLD label 220306.

What else is on the label?

Other ingredients: Enteripure softgel, Vitamin E.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): isura Non-GMO - Mass Spec Documentation Lab tested; Purity & Potency Guaranteed.

How many labels does Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU) have?

One label is on file, entered on May 22, 2020.

  1. Label 220306 (current) Entered May 22, 2020 · on the market · 150 enteripure softgels · UPC 0 68958 35492 7

DSLD also links this label to: Ultra Strength RxOmega-3 Factors (image difference, same product), Ultra Strength RxOmega-3 (image difference, same product), Ultra Strength RxOmega-3 (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 Natural Factors Canada (manufacturer). All Natural Factors products.

Where next?