Is 1500mg of adcal d3 calcium chewable 2 tablets twice a day after thyroidectomy alot. I've been on them for 5 weeks. I had blood test on 15th July parathyroid hormone test was 1.3 so a little low calcium was at 2.19. Said on discharge form gp to review I did contact them but never contacted me they gave me another prescription. I do have ent check up next Thursday with consultant so I guess its safe to continue taking until my appointment. I did read it can take 6 to 8 weeks for parathyroid gland to recover.