Always inform your doctor about all medications, supplements, and herbal remedies you’re taking before starting lithium. Lithium interacts with several drug classes, potentially leading to adverse effects.
Specifically, monitor for increased lithium levels (toxicity) when combining with:
| Nonsteroidal anti-inflammatory drugs (NSAIDs) | Ibuprofen, naproxen | Reduced lithium excretion, leading to higher blood levels. |
| Thiazide diuretics | Hydrochlorothiazide | Decreased lithium excretion, potentially causing toxicity. |
| ACE inhibitors | Lisinopril, ramipril | Increased lithium levels, necessitating careful monitoring. |
| Angiotensin receptor blockers (ARBs) | Losartan, valsartan | Similar to ACE inhibitors; increased lithium risk. |
| Metformin | Common diabetes medication | Potential for increased lithium levels. |
Conversely, some medications can decrease lithium effectiveness. These include:
| Theophylline | Bronchodilator | May reduce lithium levels. |
This information isn’t exhaustive. Consult your physician or pharmacist for personalized guidance. Regular blood tests help maintain safe lithium levels, especially while taking other medications. Dosage adjustments might be necessary depending on your individual response and other medications in use.
