hyperparathyroidism
2 interactions related to hyperparathyroidism
hydrochlorothiazide + calcium
Thiazide diuretics such as hydrochlorothiazide increase the kidney's reabsorption of calcium and reduce how much calcium leaves the body in urine. This calcium-sparing effect is often beneficial, but combined with generous calcium supplements, high-dose vitamin D, or underlying parathyroid disease it can push blood calcium too high (hypercalcemia).
hydrochlorothiazidecalciumhypercalcemiathiazidediureticbone healthhyperparathyroidismvitamin d
vitamin d + parathyroid hormone test
Vitamin D supplementation genuinely lowers parathyroid hormone (PTH) by raising serum calcium and active vitamin D, so a PTH test drawn after recent vitamin D can read below the patient's true untreated baseline. This is a real physiologic effect and a timing/interpretation issue, not an assay artifact or a dangerous interaction.
vitamin dparathyroid hormonepthhyperparathyroidismcalcium metabolismbone healthlab timing25-hydroxyvitamin d