Rainbow Light Kids One+ Multivitamin supplement bottle
Rainbow Light

Kids One+ Multivitamin

What We Researched
23 active ingredients analyzed · 7 inactive ingredients decoded · 6 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
71
Product Score Fair
86
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as Ascorbic Acid) 975 mcg 125%
Vitamin D3 (as Cholecalciferol) 10 mcg 667%
Vitamin E (as d-alpha Tocopheryl Succinate) 6.7 mg 67%
Vitamin K1 (as Phylloquinone) 20 mcg 67%
Thiamin (Vitamin B1 as Thiamin Mononitrate) 1 mg 333%
Riboflavin (Vitamin B2) 2 mg 400%
Niacin (as Niacinamide) 3 mg 50%
Vitamin B6 (as Pyridoxine Hydrochloride) 1 mg 200%
Folate 333 mcg DFE (200 mcg Folic Acid) 222%
Vitamin B-12 (as Methylcobalamin) 1 mcg 111%
Biotin 25 mcg 313%
Pantothenic Acid (as d-Calcium Pantothenate) 3 mg 100%
Calcium (as Calcium Carbonate) 100 mg 14%
Iron (as Ferrous Fumarate) 0.75 mg 25%
Iodine (from Kelp) 25 mcg 28%
Magnesium (as Magnesium Oxide) 50 mg 63%
Zinc (as Zinc Oxide) 1 mg 33%
Selenium (as Selenium Chelate) 20 mcg 100%
Copper (as Copper Gluconate) 0.25 mg 83%
Manganese (as Manganese Citrate) 0.75 mg 25%
Chromium (as Chromium Picolinate) 30 mcg 273%
Molybdenum (as Sodium Molybdate) 3 mcg 176%
Probiotic 125 mcg
Bioavailability Very Good

Absorption Rating

  • Vitamin C (as Ascorbic Acid) Fair
  • Vitamin D3 (as Cholecalciferol) Good
  • Vitamin E (as d-alpha Tocopheryl Succinate) Good
  • Vitamin K1 (as Phylloquinone) Fair
  • Thiamin (Vitamin B1 as Thiamin Mononitrate) Fair
  • Riboflavin (Vitamin B2) Good
  • Niacin (as Niacinamide) Good
  • Vitamin B6 (as Pyridoxine Hydrochloride) Fair
  • Folate Fair
  • Vitamin B-12 (as Methylcobalamin) Good
  • Biotin Good
  • Pantothenic Acid (as d-Calcium Pantothenate) Good
  • Calcium (as Calcium Carbonate) Fair
  • Iron (as Ferrous Fumarate) Fair
  • Iodine (from Kelp) Good
  • Magnesium (as Magnesium Oxide) Poor
  • Zinc (as Zinc Oxide) Poor
  • Selenium (as Selenium Chelate) Good
  • Copper (as Copper Gluconate) Good
  • Manganese (as Manganese Citrate) Good
  • Chromium (as Chromium Picolinate) Good
  • Molybdenum (as Sodium Molybdate) Good
  • Probiotic Good
Other Ingredients Excellent

Fillers & Additives

  • Fructose
  • Dextrose
  • Natural Flavors
  • Cellulose (Plant Origin)
  • Vegetable Stearic Acid
  • Silica
  • Citric Acid. Kelp ingredient may contain trace amounts of fish or shellfish
Efficacy Very Poor

Dosage Analysis

  • Vitamin C (as Ascorbic Acid) 975 mcg Under-dosed
  • Vitamin D3 (as Cholecalciferol) 10 mcg Under-dosed
  • Vitamin E (as d-alpha Tocopheryl Succinate) 6.7 mg Under-dosed
  • Vitamin K1 (as Phylloquinone) 20 mcg Under-dosed
  • Thiamin (Vitamin B1 as Thiamin Mononitrate) 1 mg Effective
  • Riboflavin (Vitamin B2) 2 mg Effective
  • Niacin (as Niacinamide) 3 mg Under-dosed
  • Vitamin B6 (as Pyridoxine Hydrochloride) 1 mg Under-dosed
  • Folate 333 mcg DFE (200 mcg Folic Acid) Under-dosed
  • Vitamin B-12 (as Methylcobalamin) 1 mcg Under-dosed
  • Biotin 25 mcg Under-dosed
  • Pantothenic Acid (as d-Calcium Pantothenate) 3 mg Under-dosed
  • Calcium (as Calcium Carbonate) 100 mg Under-dosed
  • Iron (as Ferrous Fumarate) 0.75 mg Under-dosed
  • Iodine (from Kelp) 25 mcg Under-dosed
  • Magnesium (as Magnesium Oxide) 50 mg Under-dosed
  • Zinc (as Zinc Oxide) 1 mg Under-dosed
  • Selenium (as Selenium Chelate) 20 mcg Under-dosed
  • Copper (as Copper Gluconate) 0.25 mg Under-dosed
  • Manganese (as Manganese Citrate) 0.75 mg Under-dosed
  • Chromium (as Chromium Picolinate) 30 mcg Under-dosed
  • Molybdenum (as Sodium Molybdate) 3 mcg Under-dosed
  • Probiotic 125 mcg High

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as Ascorbic Acid) 975 mcg 125%
Vitamin D3 (as Cholecalciferol) 10 mcg 667%
Vitamin E (as d-alpha Tocopheryl Succinate) 6.7 mg 67%
Vitamin K1 (as Phylloquinone) 20 mcg 67%
Thiamin (Vitamin B1 as Thiamin Mononitrate) 1 mg 333%
Riboflavin (Vitamin B2) 2 mg 400%
Niacin (as Niacinamide) 3 mg 50%
Vitamin B6 (as Pyridoxine Hydrochloride) 1 mg 200%
Folate 333 mcg DFE (200 mcg Folic Acid) 222%
Vitamin B-12 (as Methylcobalamin) 1 mcg 111%
Biotin 25 mcg 313%
Pantothenic Acid (as d-Calcium Pantothenate) 3 mg 100%
Calcium (as Calcium Carbonate) 100 mg 14%
Iron (as Ferrous Fumarate) 0.75 mg 25%
Iodine (from Kelp) 25 mcg 28%
Magnesium (as Magnesium Oxide) 50 mg 63%
Zinc (as Zinc Oxide) 1 mg 33%
Selenium (as Selenium Chelate) 20 mcg 100%
Copper (as Copper Gluconate) 0.25 mg 83%
Manganese (as Manganese Citrate) 0.75 mg 25%
Chromium (as Chromium Picolinate) 30 mcg 273%
Molybdenum (as Sodium Molybdate) 3 mcg 176%
Probiotic 125 mcg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Fructose Generally_safe

It is used as a sweetener.

Dextrose Generally_safe

It is used as a filler, sweetener, or to improve the flow of powders.

Natural Flavors Safe

Improves taste of chewable, gummy, or liquid supplements.

Cellulose (Plant Origin) Safe

It is used as a filler, binder, or thickener.

Vegetable Stearic Acid Generally_safe

It is used to prevent ingredients from sticking to manufacturing equipment.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Citric Acid. Kelp ingredient may contain trace amounts of fish or shellfish Unknown

Price Comparison

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Rainbow Light

Founded 1981 · Santa Cruz, California, USA (Founding Location) · 60 products · rainbowlight.com/

Certifications

6 certifications
Clean Label Project Verified Source
Consumerlab Verified Source
Labdoor Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Usda Organic Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
In House Testing — Verified Source

Violation History

2 incidents
Prop 65 Lead2019-08-15Source
Lawsuit False advertising regarding the presence of heavy metals in prenatal vitamins.2019Source
Related Supplements
Frequently Asked Questions
Is Rainbow Light Kids One+ Multivitamin a good supplement?

Rainbow Light Kids One+ Multivitamin received a product quality score of 71/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 23 active ingredients with 50 servings per container. Of the 7 inactive ingredients, 3 are rated safe and 0 are flagged for review. The manufacturer, Rainbow Light, holds a brand trust score of 86/100 with 6 verified certifications including Clean Label Project, Consumerlab, Labdoor, Fda Gmp Inspections.

What are the ingredients in Rainbow Light Kids One+ Multivitamin?

Rainbow Light Kids One+ Multivitamin contains 23 active ingredients: Vitamin C (as Ascorbic Acid) (975 mcg), Vitamin D3 (as Cholecalciferol) (10 mcg), Vitamin E (as d-alpha Tocopheryl Succinate) (6.7 mg), Vitamin K1 (as Phylloquinone) (20 mcg), Thiamin (Vitamin B1 as Thiamin Mononitrate) (1 mg), Riboflavin (Vitamin B2) (2 mg), and 17 more. Notable high-dose ingredients include Vitamin D3 at 667% DV, Thiamin at 333% DV, Riboflavin at 400% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Rainbow Light Kids One+ Multivitamin safe to take?

Rainbow Light Kids One+ Multivitamin has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Rainbow Light a trustworthy supplement brand?

Rainbow Light receives a brand trust score of 86/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1981 and headquartered in Santa Cruz, California, USA (Founding Location), the company offers 60 products in their lineup. They hold 6 verified certifications including Clean Label Project, Consumerlab, Labdoor, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Rainbow Light has 2 historical regulatory incidents on record, which are factored into the trust score.

How much vitamin d3 should i take daily?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What does vitamin d do?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How much vitamin d3 per day for a woman?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.