Vitamin D3

Table of Contents

  1. Simple Report
  2. Detailed Report
  3. Overall Effectiveness Rating
  4. Research Rating
  5. Products Containing Vitamin D3
  6. Claim Ratings
  7. Dosing
  8. References

Vitamin D3 Simple Report

  • Supplement: Vitamin D3
  • Supplement Category: vitamins and minerals
  • Number of Products Containing Vitamin D3: 70
  • Effectiveness Rating: 1.6 out of 3
  • Research Rating: 43 (above 80 indicates sufficient research)
  • Number of Studies: 10
  • Number of Claims: 8
  • Effective Dosage Range: 80 micrograms per day

Vitamin D3 Detailed Report

Overall Effectiveness Rating

The overall effectiveness rating for vitamin d3 is 1.6 out of 3. This rating means the evidence is mixed on the supplement's ability to deliver positive results. While some of the research supports its use, other evidence does not. Using this supplement may lead to positive results. Note, this effectiveness rating is for vitamin d3 as a whole; there are also individual ratings for the claims below.

Read more: What is the effectiveness rating?

Research Rating for Vitamin D3

There are 10 studies in the database on vitamin d3; the research rating is 43. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this research rating is for vitamin d3 as a whole; there are also individual ratings for the claims below.

Read more: What is the research rating?

Products Containing Vitamin D3

Products Names Amount of Vitamin D3
Alpha Gainz 25mcg
Fortitude II 25mcg
PumpMode (capsules) 12.5mcg
Testo 50mcg
Super Bio Sleep 75mcg
Full list of all 70 products containing Vitamin D3.

Claim Ratings

The overall ratings above are an average of the individual claim ratings below. Individual claims may have higher or lower ratings compared to the supplement's overall rating. For example, some supplements may have excellent backing for one claim, but be completely useless for another. Click on a claim below for more information.

Body Composition (weight, muscle, body fat) Claims Effectiveness Rating Research Rating
decrease body fat
increase muscle mass
increase weight loss

Performance Claims Effectiveness Rating Research Rating
improve sports performance
increase strength
improve cycling sprint performance

Hormone Function Claims Effectiveness Rating Research Rating
increase testosterone

General Health Claims Effectiveness Rating Research Rating
increase bone density


The Supplement Database includes 2 studies on vitamin d3 dosing. These studies indicate an effective dose is 80 micrograms per day. For a more detailed dosing analysis visit: Supplement Dosing for Vitamin D3.


Title of Study
A 12-week double-blind randomized clinical trial of vitamin D3 supplementation on body fat mass in healthy overweight and obese women
Acute Effects of Vitamin D3 Supplementation on Muscle Strength in Judoka Athletes: A Randomized Placebo-Controlled, Double-Blind Trial
Correcting Vitamin D Insufficiency Improves Some But Not All Aspects of Physical Performance During Winter Training in Taekwondo Athletes
Effect of Vitamin D Supplementation on Testosterone Levels in Men
Effects of Vitamin D3 Supplementation on Lean Mass, Muscle Strength, and Bone Mineral Density During Weight Loss: A Double-Blind Randomized Controlled Trial
Skeletal muscle strength in young Asian Indian females after vitamin D and calcium supplementation: a double-blind randomized controlled clinical trial
Three doses of vitamin D, bone mineral density, and geometry in older women during modest weight control in a 1-year randomized controlled trial
Vitamin D supplementation and testosterone concentrations in male human subjects
Vitamin D3 supplementation and body composition in persons with obesity and type 2 diabetes in the UAE: A randomized controlled double-blinded clinical trial
Vitamin D3 supplementation during weight loss: a double-blind randomized controlled trial