Brief Answer:
Not related to heart disease

Detailed Answer:
Dear Ms, You might not have any symptoms if you have mild hypercalcemia. If you have a more serious case, you might have symptoms that affect various parts of your body:
excessive thirst
excessive urination
unilateral pain between your back and upper abdomen
nausea
abdominal pain
decreased appetite
constipation
vomiting
muscle twitches and weakness.
bone pain
bowed shoulders
curvature of the spine
Psychological symptoms such as depression, memory loss, and irritability.
When you have hypercalcemia, your body can’t regulate your calcium level as it normally would. There are several possible causes of this condition.

Hyperparathyroidism which is increased parathyroid hormone
Granulomatous diseases, such as tuberculosis, are lung diseases that can cause your vitamin D levels to rise
Some medications, as diuretics and lithium can produce hypercalcemia.
Taking too much vitamin D or calcium in the form of supplements can raise your calcium level.
Dehydration
but hypercalcemia does not confirm or cause atrial fibrillation . I hope I answered your question

---

Brief Answer:
Yes, you should stop taking them

Detailed Answer:
Dear Ms, daily vitamin d supplements could be the cause of your hypercalcemia so you should stop taking them . I hope I answered your question .. if you don't have Any other clarifications then please close the discussion..

---