calcium and vitamin D supplements Flashcards
what are the contraindications for calcium supplements?
Kidney disease, hypercalcaemia and hypoparathyroidism
What are the side effects of calcium supplements?
GI - (Upset stomach, vomiting, stomach pain, belching, constipation)
dry mouth, metalic taste
increased urination
loss of appetite
What are the drug interactions of calcium carbonate
Digoxin, antacids, calcitriol/vit D supplements, doxycycline and tetracycline.
How is calcium carbonate eliminated?
20 % Renal
80% faecal
How does calcitrol (vit D) work?
Increases blood calcium levels by:
- increasing GI absorption of calcium
- increasing renal tubular re-absorption of calcium
- stimulate calcium release from bone
- causes PTH to decrease —> bone reabsorption decreases.
What is calcitrol (vit D ) used for?
- Renal Osteodystrophy
- Postmenopausal osteoporosis
- rickets
- secondary hyperparathyroidism (in patients with chronic renal failure and osteomalacia)
What are the contraindications of calcitrol?
- hypercalcaemia
- vit D toxicity
What are the side effects of calcitrol?
GI - loss pf appetite, weight loss, nausea, metallic taste
- thirst, sweating
- increased urinary frequency
- headache
- rash
- UTI
What are the drug interactions of calcitrol?
- calcium supplements
- phenytoin
- barbiturates
- thiazide diuretics
- magnesium containing meds e.g. antacids.
