Thanks. Should be fine. I take extra vitamin D and magnesium myself. The upper limit for vitamin D is 4000iu daily, but some people can take even more safely if they don't get a lot of calcium in their diets. Harder to calculate magnesium, but if your multi includes magnesium oxide (like a lot of them do) then it's probably fine because your But there can be interactions. Certain supplements may negate each other when taken together for example. Polygala and 7,8-DHF, caffeine and sleep supplements lol, etc. One of the best things you can do is learn what each supplement does to the body so that taking them doesn't end up being pointless. 8. Applies to: Calcium 600 D (calcium / vitamin d) Calcium absorption may be increased by taking it with food. However, foods high in oxalic acid (spinach or rhubarb), or phytic acid (bran and whole grains) may decrease calcium absorption. In addition, information is available only on vitamin intakes but not on blood/serum levels.33 Information on reasons for supplement intake is also lacking.33 As most supplements contain multivitamins, supplementation of vitamin B6 and/or B12 is likely to be taken with vitamin D and calcium.48 We assume that multivitamin supplements are Most premenopausal women can safely take the amount of iron contained in a multivitamin (usually the RDA). And those who are low in iron can be helped by taking supplemental vitamin C with meals containing both heme and non-heme iron, or eat strawberries, red peppers or an orange if you prefer to get your vitamin C from food. “Consuming foods that are high in vitamin C at the same meal with iron-rich plant foods boosts the bioavailability of iron,” she explains. “This means you absorb more of it.” The scientific explanation for all of this is very, well, scientific and can be difficult to understand if you’re not a scientist or a medical provider. Taking magnesium supplements helps your body to absorb and use types of minerals such as calcium, phosphorus and potassium, and vitamins like vitamin D. If you take vitamin D supplements, they won’t work properly in strengthening your bones unless the concentrations of boron, magnesium and zinc, and vitamin K and A, are at the correct levels. You may need to take vitamin and mineral supplements for various reasons, including: The recommended intake of 27 milligrams (mg) iron per day can be met through most prenatal vitamins .

can i take vitamin d vitamin c and iron together