Interaction between Furosemide and Lithium carbonate
Major
Excretion
| ID | DDInter790 and DDInter1081 |
| Interaction | Loop diuretics may increase serum lithium levels and potentiate the risk of lithium toxicity. The exact mechanism is unknown but may be related to the sodium loss induced by loop diuresis, which produces a compensatory increase in proximal tubular reabsorption of sodium along with lithium. |
| Management | Loop diuretics should generally not be prescribed to patients receiving lithium unless close monitoring of serum lithium levels and electrolytes can be rendered. Lithium dose reductions may be required. Patients should be advised to notify their physician if they experience potential signs and symptoms of lithium toxicity such as drowsiness, dizziness, muscle weakness, vomiting, diarrhea, thirst, polyuria, tinnitus, tremor, ataxia, and blurred vision. |
| References | |
| Alternative for Furosemide |
G01A
More
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| Alternative for Lithium carbonate | - |
Potential Metabolism Interactions
Substrate-Substrate Interaction：If more than one drug is metabolized by the same CYP, it is possible that its metabolism is inhibited because of the competition between the drugs. That means, it can be useful to lower the dosage of the drugs in the drug-cocktail because they remain longer in the organism than in monotherapy.
Inhibitor-Inhibitor Interaction：Combining two or more inhibitors of one CYP, should be compensated by lowering the dosage of these drugs because the metabolism is reduced and the drugs remain longer in the organism than in monotherapy. Not adapting the dosage bears the risk of even more side effects.
Inhibitor-Substrate Interaction：Combining drugs that have inhibitory effect and are substrates of one particular CYP, should be compensated by lowering the dosage. They rest longer in the organism than in monotherapy. Not adapting the dosage bears the risk of even more side effects.