Kirkman Labs Spectrum Complete II Powder, Unflavored, 16 oz (454 gm) supplement bottle
Kirkman Labs

Spectrum Complete II Powder, Unflavored, 16 oz (454 gm)

What We Researched
26 active ingredients analyzed · 2 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
86
Product Score Good
81
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Each ServingContains Amount Per Serving %Daily Value
Total Carbohydrates 1 g <1%
Vitamin A (as Beta-Carotene and Retinol) (600 mcg RAE 2000 IU 67%
Vitamin C (as Ascorbic Acid and Potassium Ascorbate) 300 mg 333%
Vitamin D3 (as Cholecalciferol) 400 IU10 mcg 50%
Vitamin E (as Alpha-Tocopherol) 30 IU20mg 133%
Vitamin B1 (as Thiamine HCl) 5 mg 417%
Vitamin B2 (as Riboflavin-5-Phosphate) 7 mg 538%
Vitamin B3 (as Niacinamide) 20 mg NE 125%
Vitamin B6 (as Pyridoxal-5-Phosphate and Pyridoxine HCl) 10 mg 588%
Folate (as Folic Acid 135 mcg) 225 mcg DFE 56%
Vitamin B12 (as Cyanocobalamin) 170 mcg 7,083%
Biotin 100 mcg 333%
Vitamin B5 (as D-Calcium Pantothenate) 10 mg 200%
Choline (as Choline Dihydrogen Citrate) 25 mg 5%
Calcium (from Calcium Carbonate and Bisglycinate) 280 mg 22%
lodine (from Potassium iodide) 150 mcg 100%
Magnesium (from Magnesium Citrate and Ascorbate) 200 mg 48%
Zinc (from Zinc Sulfate) 20 mg 182%
Selenium (from Selenium Glycinate Complex) 70 mcg 127%
Manganese (from Manganese Sulfate) 2 mg 87%
Chromium (from Chromium Nicotinate Glycinate Chelate) 50 mcg 143%
Molybdenum (from Molybdenum Glycinate) 100 mcg 222%
Kirkman® Proprietary BlendAlpha Ketoglutaric Acid, Taurine, Glycine, DMAE (Dimethyl Amino Ethanol Bitartrate), Inositol, Coenzyme Q10, Beta Glucan (from Yeast), Grape Seed (Vitis vinifera)(seed) Extract 620 mg *
Bioavailability Very Good

Absorption Rating

  • Each ServingContains Fair
  • Total Carbohydrates Fair
  • Vitamin A (as Beta-Carotene and Retinol) (600 mcg RAE Fair
  • Vitamin C (as Ascorbic Acid and Potassium Ascorbate) Good
  • Vitamin D3 (as Cholecalciferol) Good
  • Vitamin E (as Alpha-Tocopherol) Good
  • Vitamin B1 (as Thiamine HCl) Fair
  • Vitamin B2 (as Riboflavin-5-Phosphate) Good
  • Vitamin B3 (as Niacinamide) Good
  • Vitamin B6 (as Pyridoxal-5-Phosphate and Pyridoxine HCl) Good
  • Folate (as Folic Acid 135 mcg) Fair
  • Vitamin B12 (as Cyanocobalamin) Fair
  • Biotin Good
  • Vitamin B5 (as D-Calcium Pantothenate) Good
  • Choline (as Choline Dihydrogen Citrate) Fair
  • Calcium (from Calcium Carbonate and Bisglycinate) Fair
  • lodine (from Potassium iodide) Good
  • Magnesium (from Magnesium Citrate and Ascorbate) Good
  • Zinc (from Zinc Sulfate) Fair
  • Selenium (from Selenium Glycinate Complex) Good
  • Manganese (from Manganese Sulfate) Good
  • Chromium (from Chromium Nicotinate Glycinate Chelate) Good
  • Molybdenum (from Molybdenum Glycinate) Good
  • Kirkman® Proprietary BlendAlpha Ketoglutaric Acid, Taurine, Glycine, DMAE (Dimethyl Amino Ethanol Bitartrate), Inositol, Coenzyme Q10, Beta Glucan (from Yeast), Grape Seed (Vitis vinifera)(seed) Extract Fair
Other Ingredients Excellent

Fillers & Additives

  • Xylitol
  • Citric Acid
Efficacy Good

Dosage Analysis

  • Vitamin A (as Beta-Carotene and Retinol) (600 mcg RAE 2000 IU Under-dosed
  • Vitamin C (as Ascorbic Acid and Potassium Ascorbate) 300 mg Effective
  • Vitamin D3 (as Cholecalciferol) 400 IU10 mcg Under-dosed
  • Vitamin E (as Alpha-Tocopherol) 30 IU20mg Effective
  • Vitamin B1 (as Thiamine HCl) 5 mg Effective
  • Vitamin B2 (as Riboflavin-5-Phosphate) 7 mg Effective
  • Vitamin B3 (as Niacinamide) 20 mg NE Effective
  • Vitamin B6 (as Pyridoxal-5-Phosphate and Pyridoxine HCl) 10 mg Effective
  • Folate (as Folic Acid 135 mcg) 225 mcg DFE Under-dosed
  • Vitamin B12 (as Cyanocobalamin) 170 mcg Effective
  • Biotin 100 mcg Effective
  • Vitamin B5 (as D-Calcium Pantothenate) 10 mg Effective
  • Choline (as Choline Dihydrogen Citrate) 25 mg Under-dosed
  • Calcium (from Calcium Carbonate and Bisglycinate) 280 mg Under-dosed
  • lodine (from Potassium iodide) 150 mcg Under-dosed
  • Magnesium (from Magnesium Citrate and Ascorbate) 200 mg Effective
  • Zinc (from Zinc Sulfate) 20 mg Effective
  • Selenium (from Selenium Glycinate Complex) 70 mcg Effective
  • Manganese (from Manganese Sulfate) 2 mg Effective
  • Chromium (from Chromium Nicotinate Glycinate Chelate) 50 mcg Effective
  • Molybdenum (from Molybdenum Glycinate) 100 mcg Effective
  • Kirkman® Proprietary BlendAlpha Ketoglutaric Acid, Taurine, Glycine, DMAE (Dimethyl Amino Ethanol Bitartrate), Inositol, Coenzyme Q10, Beta Glucan (from Yeast), Grape Seed (Vitis vinifera)(seed) Extract 620 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Each ServingContains Amount Per Serving %Daily Value
Calories 5
Total Carbohydrates 1 g <1%
Sugar Alcohol 1 g *
Vitamin A (as Beta-Carotene and Retinol) (600 mcg RAE 2000 IU 67%
Vitamin C (as Ascorbic Acid and Potassium Ascorbate) 300 mg 333%
Vitamin D3 (as Cholecalciferol) 400 IU10 mcg 50%
Vitamin E (as Alpha-Tocopherol) 30 IU20mg 133%
Vitamin B1 (as Thiamine HCl) 5 mg 417%
Vitamin B2 (as Riboflavin-5-Phosphate) 7 mg 538%
Vitamin B3 (as Niacinamide) 20 mg NE 125%
Vitamin B6 (as Pyridoxal-5-Phosphate and Pyridoxine HCl) 10 mg 588%
Folate (as Folic Acid 135 mcg) 225 mcg DFE 56%
Vitamin B12 (as Cyanocobalamin) 170 mcg 7,083%
Biotin 100 mcg 333%
Vitamin B5 (as D-Calcium Pantothenate) 10 mg 200%
Choline (as Choline Dihydrogen Citrate) 25 mg 5%
Calcium (from Calcium Carbonate and Bisglycinate) 280 mg 22%
lodine (from Potassium iodide) 150 mcg 100%
Magnesium (from Magnesium Citrate and Ascorbate) 200 mg 48%
Zinc (from Zinc Sulfate) 20 mg 182%
Selenium (from Selenium Glycinate Complex) 70 mcg 127%
Manganese (from Manganese Sulfate) 2 mg 87%
Chromium (from Chromium Nicotinate Glycinate Chelate) 50 mcg 143%
Molybdenum (from Molybdenum Glycinate) 100 mcg 222%
Kirkman® Proprietary BlendAlpha Ketoglutaric Acid, Taurine, Glycine, DMAE (Dimethyl Amino Ethanol Bitartrate), Inositol, Coenzyme Q10, Beta Glucan (from Yeast), Grape Seed (Vitis vinifera)(seed) Extract 620 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Xylitol Safe

Provides sweetness with reduced calorie content. Does not promote tooth decay.

Citric Acid Safe

Adds tartness and acts as a natural preservative. Also aids in ingredient stability.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$71$70$69$68$67 Mar 12 $69.00
iHerb

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

Brand Trust Report
Kirkman Labs

Founded 1949 · Lake Oswego, Oregon, U.S. · 74 products · kirkmangroup.com

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

5 claims
Third Party Testing Claim — Verified Source
Coa Availability — Claimed Source
Testing Lab Disclosure — Claimed Source
In House Testing — Verified Source

Violation History

1 incident
Fda Warning Marketing unapproved new drugs and misbranded drugs (sodium fluoride products).2016-01-13Source
Related Supplements
Frequently Asked Questions
Is Kirkman Labs Spectrum Complete II Powder, Unflavored a good supplement?

Kirkman Labs Spectrum Complete II Powder, Unflavored, 16 oz (454 gm) received a product quality score of 86/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 26 active ingredients with 90 servings per container. All 2 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Kirkman Labs, holds a brand trust score of 81/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Kirkman Labs Spectrum Complete II Powder, Unflavored?

Kirkman Labs Spectrum Complete II Powder, Unflavored contains 26 active ingredients: Each ServingContains (Amount Per Serving), Calories (5), Total Carbohydrates (1 g), Sugar Alcohol (1 g), Vitamin A (as Beta-Carotene and Retinol) (600 mcg RAE (2000 IU), Vitamin C (as Ascorbic Acid and Potassium Ascorbate) (300 mg), and 20 more. Notable high-dose ingredients include Vitamin C at 333% DV, Vitamin B1 at 417% DV, Vitamin B2 at 538% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Kirkman Labs Spectrum Complete II Powder, Unflavored safe to take?

Kirkman Labs Spectrum Complete II Powder, Unflavored, 16 oz (454 gm) has been analyzed for ingredient safety across all its components. All 2 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Kirkman Labs a trustworthy supplement brand?

Kirkman Labs receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1949 and headquartered in Lake Oswego, Oregon, U.S., the company offers 74 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Kirkman Labs has 1 historical regulatory incident on record, which are factored into the trust score.

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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.