Always inform your healthcare provider of any known drug allergies before taking any medication, as even minor reactions can be serious or potentially life-threatening. If you experience any signs of an allergic reaction such as swelling of the face, lips, tongue or throat while taking a medication, stop immediately and contact 911. If you are experiencing any signs of an overdose such as sudden or severe confusion or sudden or severe drowsiness, dizziness and sedation, especially accompanied by difficulty breathing, chest pain and loss of consciousness, stop taking your medication and call 911 immediately. If you are experiencing seizures, bronchospasm, chest pain, hallucinations, fast heartbeat, or trouble breathing, stop taking your medication and call 911 immediately.