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 le... More »

Too much calcium often causes mild side effects, such as belching and gas, according to WebMD. In severe cases of calcium overdose, a call to a poison control center or an emergency room visit is required, according to M... More » Health Nutrition & Diets Nutritional Amounts & Limits

Too much calcium sometimes causes constipation, according to Mayo Clinic. Gas and bloating are other possible side effects of calcium consumption. Hypercalcemia, a condition in which calcium levels in the blood are too h... More » Health Nutrition & Diets Nutritional Content

A high level of calcium in the blood, or hypercalcemia, indicates underlying conditions, such as hyperparathyroidism; lung diseases and cancers; dehydration; side effects of medications, such as thiazide diuretics; and h... More »

A high level of calcium in the blood, a condition called hypercalcemia, causes nausea and vomiting, frequent urination, excessive thirst and constipation, notes Mayo Clinic. Bone pain, muscle weakness, confusion and fati... More »

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 ... More » Health Medications & Vitamins Side Effects

Potential side effects of taking calcium and vitamin D include constipation, nausea, headache and irregular heartbeat, according to Some people may experience pain in the bones or muscles after taking calcium ... More » Health Medications & Vitamins