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A 25-year-old female asked:

I have heard to take vitamin d and calcium supplement together. is it really bad if i do not? because i only take vitamin d with vitamin c.

1 doctor answer3 doctors weighed in
Dr. William Simon
Integrative Medicine 33 years experience
Vitamin therapy: Vit D is a fat soluble vitamin so it is best absorbed with a high fat meal and levels seem to do better if taken with supper. Vit C is water soluble and therefore excreted if you take too much at one time. Taking both together would probably decrease absorption of both so should be taken at separate times. Calcium would be better absorbed taken with Vit C since it is an acid
Created for people with ongoing healthcare needs but benefits everyone.

Similar questions

Canada
A 22-year-old female asked:

Is it really important to take vitamin d and calcium supplement together? What if you do not is it serious? But i take vitamin c and vitamin d together is this okay?

1 doctor answer1 doctor weighed in
Dr. Milton Alvis, jr
Preventive Medicine 42 years experience
Vitamins combined in: all foods, beware lots of untrue promotions. If vitamin D3 (crucial to enable both calcium absorption from food & the bone forming cells to form bone; + other issues) concentrations are upper normal, e.g.70-80 ng/ml, then rarely even need Ca beyond within food. ↑ vitamin C rarely of any value for people living in 1st world countries; Lookup: "Linus Pauling & Vit. C"; actual evidence using Google.
Created for people with ongoing healthcare needs but benefits everyone.
Canada
A 25-year-old female asked:

I heard that you are supposed to take vitamin d with calcium supplement. What if you do not is it serious?

1 doctor answer2 doctors weighed in
Dr. William Simon
Integrative Medicine 33 years experience
Calcium & Vit D: No, it is not serious. You should be getting calcium from the foods you eat anyway. Vit D has an effect on calcium so it may be beneficial to add a supplement but if you get good you should be good.
Created for people with ongoing healthcare needs but benefits everyone.
Canada
A 22-year-old female asked:

Is it really important to take vitamin d with calcium supplement? Is it serious if you do not?

1 doctor answer2 doctors weighed in
Dr. Milton Alvis, jr
Preventive Medicine 42 years experience
The D3 is important,: not the calcium supplement. D3 required for intestinal cells to absorb calcium from food, the bone forming cells to form bone, muscle (including heart) strength, immune function. However too much can be toxic. Thus do not blindly take. Instead check & optimize blood concentrations (by blood sample) in upper normal, e.g. 70-80 ng/ml, range. If D3 good, calcium pills likely a waste of money.
Created for people with ongoing healthcare needs but benefits everyone.

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Last updated Aug 10, 2020

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