In one study, oral
salbutamol slightly reduced
digoxin levels, by 0.3 nanomol/L. Note
that all beta2 agonists (oral and inhaled) can cause a fall in
serum potassium levels.
It may be prudent to monitor potassium levels if beta2 agonists are started,
particularly nebulised, oral or
intravenous beta2 agonists. If
symptoms of
digoxin toxicity occur on concurrent use it may be prudent to recheck potassium levels.