monitoring
2 interactions related to monitoring
prednisone + potassium
Prednisone has weak mineralocorticoid activity that promotes potassium loss through the kidneys. With higher doses or prolonged use this can lower blood potassium (hypokalemia), which may show up as muscle weakness, fatigue, cramps, or palpitations. The risk is greatest when other potassium-wasting drugs or licorice are also in the mix.
levothyroxine + biotin
Biotin (vitamin B7) does not interact with levothyroxine pharmacologically and does not change how the medication is absorbed or works. The issue is in the lab: high-dose biotin can interfere with the biotin-streptavidin immunoassays used to measure TSH, free T4, free T3, and thyroglobulin, which can produce a falsely low TSH and falsely high T4/T3 pattern that mimics an overactive thyroid and can prompt an inappropriate dose change.