Before taking lithium,
tell your doctor and pharmacist if you are allergic to lithium or any other medications.
tell your doctor if you are taking diuretics ('water pills'). Your doctor may tell you not to take lithium if you are taking this medication or will monitor you carefully for side effects.
tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention any of the following: acetazolamide (Diamox); aminophylline; angiotensin-converting enzyme (ACE) inhibitors such as benazepril (Lotensin), captopril (Capoten), enalapril (Vasotec), fosinopril, lisinopril (Prinivil, Zestril), moexipril (Univasc), perindopril (Aceon), quinapril (Accupril), ramipril (Altace), and trandolapril (Mavik); angiotensin II receptor antagonists such as candesartan (Atacand), eprosartan (Teveten), irbesartan (Avapro), losartan (Cozaar), olmesartan (Benicar), telmisartan (Micardis); and valsartan (Diovan); antacids such as sodium bicarbonate; caffeine (found in certain medications to treat drowsiness and headaches); calcium channel blockers such as amlodipine (Norvasc), diltiazem (Cardizem, Dilacor, Tiazac, others), felodipine (Plendil), isradipine (DynaCirc), nicardipine (Cardene), nifedipine (Adalat, Procardia), nimodipine (Nymalize), nisoldipine (Sular), and verapamil (Calan, Covera, Verelan); carbamazepine (Tegretol); medications for mental illness such as haloperidol (Haldol); methyldopa (Aldomet); metronidazole (Flagyl); nonsteroidal anti-inflammatory drugs (NSAIDs) such as celecoxib (Celebrex), indomethacin (Indocin), and piroxicam (Feldene); potassium iodide; selective serotonin reuptake inhibitors (SSRIs) such as citalopram (Celexa), duloxetine (Cymbalta), escitalopram (Lexapro), fluoxetine (Prozac, Sarafem), fluvoxamine (Luvox), paroxetine (Paxil), and sertraline (Zoloft); and theophylline (Theolair, Theochron). Your doctor may have to change the doses of your medication or monitor you more carefully for side effects.
tell your doctor if you have or have ever had heart or kidney disease. Also tell your doctor if you have or develop severe diarrhea, excessive sweating, or fever during your treatment. Your doctor may tell you not to take lithium or may monitor you more carefully for side effects.
tell your doctor if you have or have ever had organic brain syndrome (any physical condition that affects the way your brain works) or thyroid disease or if you have ever fainted without an explanation. Also tell your doctor if you or anyone in your family have or have ever had Brugada syndrome (a disorder that can cause a potentially fatal irregular heart rhythm) or if anyone in your family has died suddenly with no explanation before the age of 45 years.
tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while taking lithium, call your doctor. Lithium may harm the fetus.
if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking lithium.
you should know that this medication may make you drowsy. Do not drive a car or operate machinery until you know how this medication affects you.