After Total thyroidectomy
,parathyroids are also removed along with thyroid.If the parathyroids are not implanted again,you have to take Calcium daily.
Shelcal-M is combination of Calcium,Vitamin D3
So,if you cannot get the drug,you take individually the components which it contain.
You can also eat foods rich in Calcium,Vitamin D3 and minerals.
Wish you good health