Should I take all my vitamins at once?
You can—but it's probably not a good idea. For some supplements, optimal absorption can depend on the time of day taken. Not only that—taking certain vitamins, minerals, or other supplements together can also reduce absorption and may result in adverse interactions, which can be harmful to your health.
Combining multiple supplements or taking higher-than-recommended doses can increase the risk that they can cause harm, said Kitchin. "You really can't get toxic doses of nutrients through food, but you can absolutely get toxic doses through supplements," Kitchin said.
- Nutrient Absorption Guidelines.
- Pair: Iron + Vitamin C.
- Pair: Vitamin D + Calcium.
- Pair: Vitamin B12 + Folate.
- Pair: Vitamin D + Omega-3s.
- Avoid: Iron + Calcium.
- Magnesium. Magnesium is perhaps the most important vitamin or mineral when it comes to sleep. ...
- Calcium. Calcium has been shown to play a significant role in our sleep cycles, particularly the REM stage of sleep. ...
- Potassium. ...
- B Vitamins.
The short and simple answer is: Yes! Vitamins C and D are commonly found together in multivitamins. They have complementary effects, which means that taking them together can better support your health.
Mayo Clinic suggests aiming to leave at least one to two hours between vitamins. “I usually tell people to take them at a separate meal,” says Brissette.
Any ingredient in a multiple vitamin supplement can be toxic in large amounts, but the most serious risk comes from iron or calcium. Additional risks are associated with large or toxic doses of calcium, vitamin D, and vitamin A.
The upper tolerable level is 1,000 milligrams (1,500 IU); the RDA is 30 IU. "There is no way to get an overdose from diet or fortified foods. In an Alzheimer's study, people took 2,000 IU for four years and didn't have any adverse effects.
Vitamin C and B12
According to Dr. Airey, some studies have shown that Vitamin C could break down Vitamin B12 in your digestive tract, reducing your B12 absorption. As a result, he says you want to wait at least two hours before taking Vitamin C with your Vitamin B12.
Interactions between your drugs
No interactions were found between Vitamin B12 and Vitamin D3.