Calcium and vitamin D show up together on supplement labels all the time, and there's a simple reason: they work as a team. Here's what each one does, how much adults need, and how to get the most out of a calcium supplement.
Why calcium and vitamin D go together
Calcium is the main mineral in your bones and teeth. But getting calcium into your body isn't just about how much you take in. According to the NIH Office of Dietary Supplements, vitamin D helps your body absorb calcium. That's why many calcium supplements, including ours, include vitamin D3 in the same serving.
How much calcium do adults need per day?
The NIH's recommended daily amounts for adults are:
- Ages 19–50: 1,000 mg (men and women)
- Men 51–70: 1,000 mg
- Women 51–70: 1,200 mg
- Everyone 71 and older: 1,200 mg
These totals include calcium from food, drinks and supplements combined. Dairy, fortified plant milks, canned fish with soft bones, tofu made with calcium, and leafy greens like kale all contribute, so many people only need a supplement to fill the gap.
How much vitamin D?
For most adults the NIH recommends 600 IU (15 mcg) of vitamin D a day, rising to 800 IU (20 mcg) after age 70. Few foods contain much vitamin D naturally, which is one reason it's commonly added to calcium supplements.
Tip: smaller doses absorb better
The NIH notes that calcium is absorbed best when you take 500 mg or less at one time. If you're taking more than that from supplements, split it into two servings during the day, for example one with breakfast and one with dinner.
That's one reason we built our Calcium 500mg + Vitamin D3 gummies around a 500 mg serving, paired with 1,000 IU of vitamin D3.
Don't overdo it
More isn't better. The NIH sets the upper limit for calcium from all sources at 2,500 mg a day for adults 19–50 and 2,000 mg a day for adults 51 and older. Add up what you get from food before choosing a supplement amount.
Gummies vs. pills
Calcium tablets are often large and chalky, and some people simply stop taking them. A chewable gummy is easier to stick with. Our options:
- Calcium 500mg + Vitamin D3: 500 mg calcium and 1,000 IU D3 per serving
- Calcium, Magnesium & Zinc + Vitamin D: a broader mineral blend in a raspberry flavor
Browse all of our calcium gummies, or save with a 2-pack.
The bottom line
Calcium and vitamin D are paired because vitamin D helps your body absorb calcium. Aim for your daily calcium target from food first, use a supplement to fill the gap, keep each dose at 500 mg or less, and stay under the upper limit. If you're pregnant, take medication or have a medical condition, check with your doctor before starting any supplement.
Sources: NIH Office of Dietary Supplements, Calcium Fact Sheet and Vitamin D Fact Sheet. This article is for general information and isn't medical advice.