Snapshot
Bone & immune health
1000-5000 IU daily
With a fatty meal
2-4 weeks
Magnesium, Vitamin K2
Monitor blood levels if high doses taken long-term
Top 3 Best Vitamin D3 Supplements
Generic
Nature's Bounty
Doctor's Best
Top 10 Vitamin D3 Supplements
Generic
QUANTITY
365 count
POTENCY
5000 IU
NOOTROSCORE
PRICE
$3.99
$0.01/count
Generic
QUANTITY
365 count
POTENCY
5000 IU
NOOTROSCORE
PRICE
$3.99
$0.01/count
Nature's Bounty
QUANTITY
150 count
POTENCY
5000 IU
NOOTROSCORE
PRICE
$5.39
$0.04/count
Nature's Bounty
QUANTITY
150 count
POTENCY
5000 IU
NOOTROSCORE
PRICE
$5.39
$0.04/count
Doctor's Best
QUANTITY
180 count
POTENCY
5000IU
NOOTROSCORE
PRICE
$5.85
$0.03/count
Doctor's Best
QUANTITY
180 count
POTENCY
5000IU
NOOTROSCORE
PRICE
$5.85
$0.03/count
NOW Foods
QUANTITY
120 count
POTENCY
5,000 IU
NOOTROSCORE
PRICE
$6.81
$0.06/count
NOW Foods
QUANTITY
120 count
POTENCY
5,000 IU
NOOTROSCORE
PRICE
$6.81
$0.06/count
Carlyle
QUANTITY
400 count
POTENCY
10000 IU
NOOTROSCORE
PRICE
$9.97
$0.02/count
Carlyle
QUANTITY
400 count
POTENCY
10000 IU
NOOTROSCORE
PRICE
$9.97
$0.02/count
Nature Made
QUANTITY
250 count
POTENCY
2000 IU
NOOTROSCORE
PRICE
$10.99
$0.04/count
Nature Made
QUANTITY
250 count
POTENCY
2000 IU
NOOTROSCORE
PRICE
$10.99
$0.04/count
Nature Made
QUANTITY
300 count
POTENCY
1000 IU
NOOTROSCORE
PRICE
$11.67
$0.04/count
Nature Made
QUANTITY
300 count
POTENCY
1000 IU
NOOTROSCORE
PRICE
$11.67
$0.04/count
Nature Made
QUANTITY
180 count
POTENCY
5000 IU
NOOTROSCORE
PRICE
$14.29
$0.08/count
Nature Made
QUANTITY
180 count
POTENCY
5000 IU
NOOTROSCORE
PRICE
$14.29
$0.08/count
Sports Research
QUANTITY
120 count
POTENCY
10,000 IU
NOOTROSCORE
PRICE
$14.95
$0.12/count
Sports Research
QUANTITY
120 count
POTENCY
10,000 IU
NOOTROSCORE
PRICE
$14.95
$0.12/count
Nature's Bounty
QUANTITY
350 count
POTENCY
2000 IU
NOOTROSCORE
PRICE
$18.63
$0.05/count
Nature's Bounty
QUANTITY
350 count
POTENCY
2000 IU
NOOTROSCORE
PRICE
$18.63
$0.05/count
How Vitamin D3 Helps You
Vitamin D3 enhances calcium absorption in the gut, promoting strong bones and preventing osteoporosis by maintaining proper mineralization.
Vitamin D3 modulates immune responses, reducing inflammation and enhancing pathogen-fighting capabilities of immune cells for better defense.
Vitamin D3 regulates serotonin production, a key neurotransmitter linked to mood, helping alleviate symptoms of depression and seasonal affective disorder.
How to Take Vitamin D3
With meals
Take with a meal containing healthy fats for optimal absorption, as D3 is fat-soluble.
Yes
Vitamin D3 absorbs best with dietary fats, so pair it with meals like avocado, nuts, or fish.
2-4 weeks
Consistent daily intake improves levels gradually; effects on mood or energy may take weeks.