Possible Interactions with Calcium
Overview
Calcium can interfere with the absorption of tetracycline.
Some corticosteroid medications such as glucocorticoids also inhibit the absorption of calcium, thereby increasing the risk for osteoporosis over time.
Two different classes of diuretics interact with calcium in opposite ways—thiazide diuretics such as hydrochlorothiazide can raise calcium levels in the blood, while loop diuretics such as furosemide and bumetanide can decrease calcium levels.
High levels of calcium may increase the likelihood of a toxic reaction to digoxin, including symptoms of arrhythmia (irregular heartbeat); however, low levels of calcium render digoxin ineffective. People who are taking digoxin should have calcium blood levels monitored closely.
Drug Interactions