Prescription Metformin Drug Information
Before taking metformin,lell your doctor and pharmacist if you are allergic to metformin or any other medications.tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking. Be sure to mention the medications listed in the IMPORTANT WARNING section and any of the following: amiloride (Midamor, Moduretic); antihistamines; beta-blockers such as atenolol (Tenormin), labetalol (Normodyne), metoprolol (Lopressor, Toprol XL), nadolol (Corgard), and propranolol (Inderal); calcium channel blockers such as amlodipine (Norvasc), diltiazem (Cardizem, Dilacor, Tiazac, others), felodipine (Lexxel, Plendil), isradipine (DynaCirc), nicardipine (Cardene), nifedipine (Adalat, Procardia), nimodipine (Nimotop), nisoldipine (Sular), and verapamil (Calan, Isoptin, Verelan); cimetidine (Tagamet); digoxin (Lanoxin, Lanoxicaps); furosemide (Lasix); hormone replacement therapy; insulin or other medications for diabetes; isoniazid (INH, Nydrazid); medications for asthma and colds; medications for mental illness and nausea such as fluphenazine (Prolixin), mesoridazine (Serentil), perphenazine (Trilafon), prochlorperazine (Compazine), promethazine (Phenergan), thioridazine (Mellaril), thiothixene (Navane), trifluoperazine (Stelazine), and triflupromazine (Vesprin); medications for thyroid disease; morphine (MS Contin, Roxanol, others); nicotinic acid; oral contraceptives ('birth control pills'); oral steroids such as dexamethasone (Decadron, Dexone), methylprednisolone (Medrol), and prednisone (Deltasone); phenytoin (Dilantin, Phenytek); procainamide (Procanbid); quinidine (Quinidex); quinine; ranitidine (Zantac); triamterene (Dyazide, Maxzide, others); or trimethoprim (Proloprim, Trimpex). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.tell your doctor if you have or have ever had any medical condition, especially those mentioned in the IMPORTANT WARNING section.tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking metformin, call your doctor.if you are using the extended-release tablets, you should know that sometimes the tablet shell may appear in your stool. If this occurs, it is not harmful and will not affect the way the medication works.tell your doctor if you eat less or exercise more than usual. This can affect your blood sugar. Your doctor will give you instructions if this happens.Be sure to follow all exercise and dietary recommendations made by your doctor or dietitian. It is important to eat a healthful diet.
This medication may cause changes in your blood sugar. You should know the symptoms of low and high blood sugar and what to do if you have these symptoms.
You may experience hypoglycemia (low blood sugar) while you are taking this medication. Your doctor will tell you what you should do if you develop hypoglycemia. He or she may tell you to check your blood sugar, eat or drink a food or beverage that contains sugar, such as hard candy or fruit juice, or get medical care. Follow these directions carefully if you have any of the following symptoms of hypoglycemia:shakiness dizziness or lightheadedness sweating nervousness or irritability sudden changes in behavior or mood headache numbness or tingling around the mouth weakness pale skin hunger clumsy or jerky movements If hypoglycemia is not treated, severe symptoms may develop. Be sure that your family, friends, and other people who spend time with you know that if you have any of the following symptoms, they should get medical treatment for you immediately:confusion seizures loss of consciousness Call your doctor immediately if you have any of the following symptoms of hyperglycemia (high blood sugar): extreme thirst frequent urination extreme hunger weakness blurred vision If high blood sugar is not treated, a serious, life-threatening condition called diabetic ketoacidosis could develop. Call your doctor immediately if you have any of these symptoms: dry mouth nausea and vomiting shortness of breath breath that smells fruity decreased consciousness Metformin may cause side effects. Tell your doctor if any of these symptoms are severe, do not go away, go away and come back, or do not begin for some time after you begin taking metformin: diarrhea bloating stomach pain gas constipation unpleasant metallic taste in mouth heartburn headache sneezing cough runny nose flushing of the skin nail changes muscle painSome side effects can be serious. The following symptoms are uncommon, but if you experience any of them or those listed in the IMPORTANT WARNING section, call your doctor immediately:chest pain rash Some female laboratory animals given high doses of metformin developed non-cancerous polyps (abnormal growths of tissue) in the uterus (womb). It is not known if metformin increases the risk of polyps in humans. Talk to your doctor about the risks of taking this medication.Metformin may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.'
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