Kirkland Signature Organic Multivitamin supplement bottle
Kirkland Signature

Organic Multivitamin

What We Researched
3 active ingredients analyzed · 45 inactive ingredients decoded · 6 brand certifications checked · Last updated: Mar 2026
83
Product Score Good
82
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Organic Greens Alkalizing Blend 25 mg
Organic Full Spectrum Mushroom Complex 10 mg
Botanical Blend 15 mg
Bioavailability Fair

Absorption Rating

  • Botanical Blend Fair
Other Ingredients Excellent

Fillers & Additives

  • Organic Amal Extract (Phyllanthus emblica, fruits)
  • Organic Guava Extract (Psidium guajava, leaves)
  • Organic Holy Basil Extract (Ocimum sanctum, leaves)
  • Organic Annatto Extract (Bixa orellana, seeds)
  • Organic Lemon Extract (Citrus limon, peel
  • Organic Sesbania Extract (Sesbania grandiflora, leaves)
  • Organic Cuny Extract (Murraya koenigii, leaves)
  • Organic Strawberry (Fragaria virginiana, fruit)
  • Organic Blueberry (Vaccinium angustfolium, fruit)
  • Organic Raspberry (Rubus idaeus, fruit)
  • Organic Broccoli (Brassica oleracea italica, whole plant)
  • Organic Broccoli Sprout (Brassica oleracea italica, seed)
  • Organic Tomato (Lycopersicon esculentum, fruit)
  • Organic Carrot (Daucus carota sativus, root)
  • Organic Spinach (Spinacia oleracea, leaves)
  • Organic Kale (Brassica oleracea acephala, leaves)
  • Organic Tart Cheny (Prunus cerasus, fruit)
  • Organic Pomegranate (Punica granatum, fruit)
  • Organic Cranberry (Vaccinium macrocarpon, fruit)
  • Organic Alfalfa Grass (Medicago sativa, leaves)
  • Organic Wheatgrass (Trticum aestivum, leaves)
  • Organic Barley Grass (Hordeum vulgare, leaves)
  • Organic Lemon Juice (Citrus limon)
  • Organic Kale Brassica oleracea acephala, leaves)
  • Organic Astragalus Extract (Astragalus membranaceus, root)
  • Organic Spirulina Arthrospira platensis, whole algae)
  • Organic Oat Grass (Avena sativa, leaves)
  • Organic Chlorella (Chlorella vulgaris, plant)
  • Organic Aganicus blazei (whole mushroom)
  • Organic Coriolus versicolor (whole mushroom)
  • Organic Reishi (Ganoderma lucidum, whole mushroom)
  • Organic Martake (Gniola frondosa, whole mushroom)
  • Organic Shlitake (Lentinula edodes, whole mushroom
  • Organic Cordyceps (Cordyceps sinensis, whole mushroom)
  • Organic Cordyceps (Cordyceps militaris, whole mushroom)
  • Organic Black Mustard Seed Extract (Brassica nigra, seeds)
  • Organic Moringa Extract (Moringa oleifera, leaves)
  • Organic Shiitake Mushroom (Lentinula edodes, whole mushroom)
  • Organic Maltodextrin
  • Organic Gum Arabic
  • Organic Guar Gum
  • Organic Rice Hulls
  • Organic Rice Extract
  • Organic Sunflower Oil
  • Organic Sunflower Lecithin
Efficacy N/A

Dosage Analysis

Dosage data not available for assessment.

Supplement Facts

Ingredient Amount % Daily Value
Organic Greens Alkalizing Blend 25 mg
Organic Full Spectrum Mushroom Complex 10 mg
Botanical Blend 15 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Organic Amal Extract (Phyllanthus emblica, fruits) Unknown
Organic Guava Extract (Psidium guajava, leaves) Unknown
Organic Holy Basil Extract (Ocimum sanctum, leaves) Unknown
Organic Annatto Extract (Bixa orellana, seeds) Unknown
Organic Lemon Extract (Citrus limon, peel Unknown
Organic Sesbania Extract (Sesbania grandiflora, leaves) Unknown
Organic Cuny Extract (Murraya koenigii, leaves) Unknown
Organic Strawberry (Fragaria virginiana, fruit) Unknown
Organic Blueberry (Vaccinium angustfolium, fruit) Unknown
Organic Raspberry (Rubus idaeus, fruit) Unknown
Organic Broccoli (Brassica oleracea italica, whole plant) Unknown
Organic Broccoli Sprout (Brassica oleracea italica, seed) Unknown
Organic Tomato (Lycopersicon esculentum, fruit) Unknown
Organic Carrot (Daucus carota sativus, root) Unknown
Organic Spinach (Spinacia oleracea, leaves) Unknown
Organic Kale (Brassica oleracea acephala, leaves) Unknown
Organic Tart Cheny (Prunus cerasus, fruit) Unknown
Organic Pomegranate (Punica granatum, fruit) Unknown
Organic Cranberry (Vaccinium macrocarpon, fruit) Unknown
Organic Alfalfa Grass (Medicago sativa, leaves) Unknown
Organic Wheatgrass (Trticum aestivum, leaves) Unknown
Organic Barley Grass (Hordeum vulgare, leaves) Unknown
Organic Lemon Juice (Citrus limon) Unknown
Organic Kale Brassica oleracea acephala, leaves) Unknown
Organic Astragalus Extract (Astragalus membranaceus, root) Unknown
Organic Spirulina Arthrospira platensis, whole algae) Unknown
Organic Oat Grass (Avena sativa, leaves) Unknown
Organic Chlorella (Chlorella vulgaris, plant) Unknown
Organic Aganicus blazei (whole mushroom) Unknown
Organic Coriolus versicolor (whole mushroom) Unknown
Organic Reishi (Ganoderma lucidum, whole mushroom) Unknown
Organic Martake (Gniola frondosa, whole mushroom) Unknown
Organic Shlitake (Lentinula edodes, whole mushroom Unknown
Organic Cordyceps (Cordyceps sinensis, whole mushroom) Unknown
Organic Cordyceps (Cordyceps militaris, whole mushroom) Unknown
Organic Black Mustard Seed Extract (Brassica nigra, seeds) Unknown
Organic Moringa Extract (Moringa oleifera, leaves) Unknown
Organic Shiitake Mushroom (Lentinula edodes, whole mushroom) Unknown
Organic Maltodextrin Generally_safe

It is used as a filler or binder in supplements.

Organic Gum Arabic Generally_safe

It is used as a thickener, emulsifier, or stabilizer.

Organic Guar Gum Generally_safe

It is used to thicken liquids and stabilize mixtures.

Organic Rice Hulls Generally_safe

It is used as a flow agent to prevent clumping.

Organic Rice Extract Generally_safe

It is added for its potential health benefits.

Organic Sunflower Oil Safe

Carrier oil for fat-soluble vitamins.

Organic Sunflower Lecithin Generally_safe

It is used as an emulsifier.

Brand Trust Report
Kirkland Signature

Founded 1995 · Issaquah, Washington, United States · 26 products · costco.com/kirkland-signature.html

Certifications

6 certifications
Consumerlab Verified
Non Gmo Project Verified
Usda Organic Verified
Usp Verified Verified Source
Gluten Free Gfco Verified
Vegan Certified Verified

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Claimed
In House Testing — Claimed

Violation History

3 incidents
Lawsuit Falsely advertising rotisserie chicken as containing 'no preservatives'2026Source
Recall Kirkland Signature B100 Complex Timed Release2025-03-31Source
Recall Kirkland Signature Severe Cold and Flu Plus Congestion2024-11-30Source
Related Supplements
Frequently Asked Questions
Is Kirkland Signature Organic Multivitamin a good supplement?

Kirkland Signature Organic Multivitamin received a product quality score of 83/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 3 active ingredients Of the 45 inactive ingredients, 1 are rated safe and 0 are flagged for review. The manufacturer, Kirkland Signature, holds a brand trust score of 82/100 with 6 verified certifications including Consumerlab, Non Gmo Project, Usda Organic, Usp Verified.

What are the ingredients in Kirkland Signature Organic Multivitamin?

Kirkland Signature Organic Multivitamin contains 3 active ingredients: Organic Greens Alkalizing Blend (25 mg), Organic Full Spectrum Mushroom Complex (10 mg), Botanical Blend (15 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Kirkland Signature Organic Multivitamin safe to take?

Kirkland Signature Organic 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 Kirkland Signature a trustworthy supplement brand?

Kirkland Signature receives a brand trust score of 82/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1995 and headquartered in Issaquah, Washington, United States, the company offers 26 products in their lineup. They hold 6 verified certifications including Consumerlab, Non Gmo Project, Usda Organic, Usp Verified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Kirkland Signature has 3 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.