What it does
Benefits of Vitamin D3 2,000 IU
The sunshine vitamin, for the months and the lifestyles that don't supply enough of it.
The Nourivo difference: Benefits that build over time
Timelines vary with starting levels, body size and sun exposure.*
- Blood levels of vitamin D climb gradually with consistent daily intake
- There is nothing to feel at this stage, which is normal
- Taking it with food containing fat helps absorption
- Blood levels typically plateau after roughly two to three months of daily intake
- This is the point at which a follow up blood test is most informative
- How long it takes varies with starting level, body size and sun exposure
- Levels fall again if you stop, particularly in darker months
- Daily intake is what maintains a steady state
- Ask your doctor to check your levels if you are unsure where you stand
Supplement Facts
Serving Size: 1 softgel capsule
Servings Per Container: 100
**Percent Daily Values are based on a 2,000 calorie diet.
Other Ingredients: Softgel (gelatin, glycerin, water), soybean oil, corn oil.
What's inside, and why
Vitamin D-3 (as cholecalciferol) 50 mcg (2,000 IU)
The same form your skin produces from sunlight, suspended in oil because a fat soluble vitamin needs fat to absorb.
One ingredient in an oil base. Contains soy. Made in the USA.
Our sources
A selection of the peer-reviewed research behind vitamin D3.
Immunity
Vitamin D and respiratory infections
An analysis of individual participant data from randomised trials. Supplementation reduced the risk of acute respiratory infection overall, with the largest benefit in people who were very deficient.
Martineau et al. BMJ, 2017
Read studyForm
D3 versus D2 for raising vitamin D status
A meta-analysis of trials comparing the two forms directly. The change from baseline favoured D3.
Tripkovic et al. Am J Clin Nutr, 2012
Read studyDosing
What determines how much your level rises
Thirty-three trials analysed for how dose, duration and starting level shape the response.
Shab-Bidar et al. Nutrition, 2014
Read studyMuscle
Vitamin D and falls in older adults
A meta-analysis of randomised trials in older adults. Doses of 700 to 1,000 IU a day reduced the risk of falling, while lower doses may not.
Bischoff-Ferrari et al. BMJ, 2009
Read studyThese papers examine vitamin D as an ingredient and are shared for reference. They are not studies of this product, and nothing here is intended to diagnose, treat, cure or prevent any disease.
Questions
Questions? We're here to help.
Why 2,000 IU?
It's the strength most adults actually take, rather than the token 400 IU that shows up in a lot of multivitamins. At 50 mcg it comes to 250 percent of the Daily Value, which sounds high until you remember the Daily Value is set to prevent deficiency, not to reflect what people supplementing typically use.
Does it need to be taken with food?
It works best that way. Vitamin D is fat soluble, meaning it absorbs alongside dietary fat. This one is already suspended in soybean and corn oil to help, but taking it with a meal that contains some fat is still the better habit.
What's the difference between D2 and D3?
D3 (cholecalciferol) is the form your skin produces from sunlight and the form found in animal sources. D2 (ergocalciferol) comes from plants and fungi. D3 is generally considered the more effective of the two at raising and maintaining blood levels, which is why it's what we use.
Should I take it year round or only in winter?
Winter is when most people need it most — shorter days, weaker sunlight, less skin exposed. But indoor work and daily sunscreen narrow the window year round, so plenty of people take it every day regardless of season. If you're unsure where your levels sit, a simple blood test from your doctor will tell you.
Does it contain any allergens?
Yes — it contains soy, from the soybean oil the D3 is suspended in. The softgel itself is made from gelatin, glycerin and water, so it isn't vegetarian. Consult a physician before use if you are pregnant, nursing, taking medication, or managing a medical condition.
Where is it made?
Manufactured in the USA in a cGMP-compliant facility. No proprietary blends — every ingredient and its dose is printed on the label.
Founder
A note from Dylan, founder
I started Nourivo because I was tired of supplement labels that oversell what's inside. Everything here is made to a standard I'd put my own name on.
Read the full story
