hi doctor i am 30 years old (female). I have a problem of calcium deficiency. Now a days i am feeling high heart beat (during stairs climbing, talking and even while sitting). i feel too much pain in my back and wrists. i am taking osteocare (one tab) also. Kindly guide me what should i do? last years i took 5 injections of vitamin D . But now a days i am too much tired. Should i take again vitamin D injection. what is the good medicine for this? can heart beat be affected by calcium medicine? waiting for your reply. thanks