Life Extension Dr. Strum's Intensive Bone Formula, 300 Capsules supplement bottle
Life Extension

Dr. Strum's Intensive Bone Formula, 300 Capsules

What We Researched
9 active ingredients analyzed · 7 inactive ingredients decoded · 3 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
93
Product Score Excellent
86
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin D3 (as cholecalciferol) 200 mcg 1000%
Vitamin K2 (as trans menaquinone-7) 200 mcg 167%
Calcium [as calcium carbonate, citrate malate] 800 mg 62%
Magnesium (as magnesium citrate) 400 mg 95%
Zinc (as zinc citrate) 10 mg 91%
Potassium (as potassium citrate supplying 30 milliequivalents potassium) 1173 mg 25%
Winged treebine extract (aerial part)[std. to 10% ketosterones] 600 mg **
Silicon (from std. Bamboo extract (stem, leaf) silicon dioxide] 49 mg **
Boron (from boron citrate, aspartate, glycinate) 6 mg **
Bioavailability Very Good

Absorption Rating

  • Vitamin D3 (as cholecalciferol) Good
  • Vitamin K2 (as trans menaquinone-7) Good
  • Calcium [as calcium carbonate, citrate malate] Fair
  • Magnesium (as magnesium citrate) Good
  • Zinc (as zinc citrate) Good
  • Potassium (as potassium citrate supplying 30 milliequivalents potassium) Good
  • Winged treebine extract (aerial part)[std. to 10% ketosterones] Good
  • Silicon (from std. Bamboo extract (stem, leaf) silicon dioxide] Poor
  • Boron (from boron citrate, aspartate, glycinate) Good
Other Ingredients Excellent

Fillers & Additives

  • Citric Acid
  • Vegetable Cellulose (Capsule)
  • Maltodextrin
  • Microcrystalline Cellulose
  • Malic Acid
  • Vegetable Stearate
  • Modified Food Starch
Efficacy Excellent

Dosage Analysis

  • Vitamin D3 (as cholecalciferol) 200 mcg High
  • Vitamin K2 (as trans menaquinone-7) 200 mcg Effective
  • Calcium [as calcium carbonate, citrate malate] 800 mg Effective
  • Magnesium (as magnesium citrate) 400 mg High
  • Zinc (as zinc citrate) 10 mg Effective
  • Potassium (as potassium citrate supplying 30 milliequivalents potassium) 1173 mg Effective
  • Winged treebine extract (aerial part)[std. to 10% ketosterones] 600 mg Effective
  • Silicon (from std. Bamboo extract (stem, leaf) silicon dioxide] 49 mg High
  • Boron (from boron citrate, aspartate, glycinate) 6 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D3 (as cholecalciferol) 200 mcg 1000%
Vitamin K2 (as trans menaquinone-7) 200 mcg 167%
Calcium [as calcium carbonate, citrate malate] 800 mg 62%
Magnesium (as magnesium citrate) 400 mg 95%
Zinc (as zinc citrate) 10 mg 91%
Potassium (as potassium citrate supplying 30 milliequivalents potassium) 1173 mg 25%
Winged treebine extract (aerial part)[std. to 10% ketosterones] 600 mg **
Silicon (from std. Bamboo extract (stem, leaf) silicon dioxide] 49 mg **
Boron (from boron citrate, aspartate, glycinate) 6 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Citric Acid Safe

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

Vegetable Cellulose (Capsule) Safe

It is used as a material for making vegetarian capsules.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Malic Acid Safe

Adds tartness and enhances fruit flavors in gummies and chewables.

Vegetable Stearate Safe

Prevents ingredients from sticking to equipment.

Modified Food Starch Generally_safe

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

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$41$40$39$38$37 Mar 12 $39.00
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
Life Extension

Founded 1980 · Fort Lauderdale, Florida, USA · 352 products · lifeextension.com

Certifications

3 certifications
Consumerlab Verified Source
Fda Gmp Inspections Verified Source
Nsf Gmp Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Claimed

Violation History

2 incidents
Prop 65 Lead2018-04-13Source
Fda Warning Making drug claims for dietary supplements, suggesting they can treat, mitigate, or prevent diseases such as breast cancer and Alzheimer's.2017-02-01Source
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Frequently Asked Questions
Is Life Extension Dr. Strum's Intensive Bone Formula, 300 Capsules a good supplement?

Life Extension Dr. Strum's Intensive Bone Formula, 300 Capsules received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 9 active ingredients with 30 servings per container. Of the 7 inactive ingredients, 5 are rated safe and 0 are flagged for review. The manufacturer, Life Extension, holds a brand trust score of 86/100 with 3 verified certifications including Consumerlab, Fda Gmp Inspections, Nsf Gmp.

What are the ingredients in Life Extension Dr. Strum's Intensive Bone Formula, 300 Capsules?

Life Extension Dr. Strum's Intensive Bone Formula, 300 Capsules contains 9 active ingredients: Vitamin D3 (as cholecalciferol) (200 mcg), Vitamin K2 (as trans menaquinone-7) (200 mcg), Calcium [as calcium carbonate, citrate malate] (800 mg), Magnesium (as magnesium citrate) (400 mg), Zinc (as zinc citrate) (10 mg), Potassium (as potassium citrate supplying 30 milliequivalents potassium) (1173 mg), and 3 more. Notable high-dose ingredients include Vitamin D3 at 1000% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Life Extension Dr. Strum's Intensive Bone Formula, 300 Capsules safe to take?

Life Extension Dr. Strum's Intensive Bone Formula, 300 Capsules 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 Life Extension a trustworthy supplement brand?

Life Extension receives a brand trust score of 86/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1980 and headquartered in Fort Lauderdale, Florida, USA, the company offers 352 products in their lineup. They hold 3 verified certifications including Consumerlab, Fda Gmp Inspections, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Life Extension has 2 historical regulatory incidents 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.