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www.reference.com/article/side-effects-taking-much-calcium-2dcff3b9f989cb11

According to the National Institutes of Health Office of Dietary Supplements, side effects from ingesting excess calcium in the form of dietary supplements or antacid tablets include hypercalcemia (an elevated calcium level in the blood), calcium deposits in soft tissue...

www.reference.com/article/side-effects-high-calcium-c6cb132953c07c4

High calcium levels in the blood can lead to vomiting, constipation, fatigue, excessive thirst and excessive urination. The normal calcium levels in the blood range from 8.5 to 10.2 milligrams per deciliter, notes the United States National Institutes of Health's Medlin...

www.reference.com/article/side-effects-taking-calcium-supplements-58fb47cc3c7998a0

According to the National Institutes of Health, possible side effects of recommended dosages of calcium supplements can include constipation, bloating, gas or a combination of these effects. These side effects may occur more frequently with calcium carbonate as opposed ...

www.reference.com/article/side-effects-low-calcium-levels-6590702e8f6e2a7

Low calcium levels can lead to osteoporosis or brittle bones. Children with low calcium levels may not grow as well as they should. Age and gender determine the recommended daily level of calcium.

www.reference.com/article/potential-side-effects-taking-calcium-vitamin-d-bfad21b30045408a

Potential side effects of taking calcium and vitamin D include constipation, nausea, headache and irregular heartbeat, according to Drugs.com. Some people may experience pain in the bones or muscles after taking calcium and vitamin D.

www.reference.com/article/side-effects-taking-much-vitamin-d-c3b56b52b622f2f3

The side effects of excessive vitamin D levels in children mirror overdose symptoms of adults, and include: kidney stones, nausea, constipation and confusion. Toxic levels of vitamin D in the bloodstream typically arise from taking supplements, rather than food consumpt...

www.reference.com/article/side-effects-taking-calcium-tablets-day-d928c565c1e2ef5b

Taking calcium can cause mild side effects including belching, gas, cramps and bloating. Calcium is usually safe when taken in proper amounts, according to WebMD. However, calcium in excess of 1300 milligrams can cause more intense side effects, with some research linki...