![]() This product may contain inactive ingredients, which can cause allergic reactions or other problems. You may report side effects to Health Canada at 1-86.īefore taking caffeine, tell your doctor or pharmacist if you are allergic to it or to other xanthine drugs (such as theophylline) or if you have any other allergies. You may report side effects to FDA at 1-80 or at In Canada - Call your doctor for medical advice about side effects. In the US - Call your doctor for medical advice about side effects. If you notice other effects not listed above, contact your doctor or pharmacist. This is not a complete list of possible side effects. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/ tongue/throat), severe dizziness, trouble breathing. Tell your doctor right away if any of these unlikely but serious side effects occur: dizziness, mental/mood changes (such as nervousness, agitation), shaking (tremor), fast/irregular heartbeat.Ī very serious allergic reaction to this drug is rare. Many people using this medication do not have serious side effects. If your doctor has directed you to use this medication, remember that your doctor has judged that the benefit to you is greater than the risk of side effects. If any of these effects last or get worse, tell your doctor or pharmacist promptly. Nausea, vomiting, stomach upset, trouble sleeping, or increased urination may occur. If you think you may have a serious medical problem, seek immediate medical attention. Tell your doctor if your condition lasts, gets worse, or continues to occur again. Talk with your doctor if this medication stops working well. When used for an extended period, this medication may not work as well. Tell your doctor or pharmacist right away if you have withdrawal. Withdrawal is more likely if you have used caffeine for a long time or in high doses. To help prevent withdrawal, your doctor may lower your dose slowly. If you suddenly stop using this medication, you may have withdrawal symptoms (such as headaches, mental/mood changes such as irritation/nervousness). Do not increase your dose, take it more frequently than directed, or take it regularly for a long time. Though very unlikely, this medication may be habit-forming. ![]() This medication should only be used as needed, not on a regular basis. If you have any questions, ask your doctor or pharmacist. ![]() Follow all directions on the product package, or take as directed by your doctor.
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