The conclusion on these three ingredients falls in line with what we've previously found; there is v...read more
The overall rating for vitamin d3 is 1.6 out of 3 meaning there is some evidence that this supplement does some (not all) of what it claims. Using this supplement may lead to some improvements.
- Simple Report
- Detailed Report
- Overall Effectiveness Rating
- Research Rating
- Products Containing Vitamin D3
- Claim Ratings
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|
|Iron Brothers Testosterone Booster||25mcg|
|Full list of all 249 products containing Vitamin D3.|
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|
|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.