If any of the following side effects occur, stop taking the medicine and promptly inform your doctor:

• Sudden difficulty breathing
• Wheeziness
• Swelling of the face, mouth, or throat.

• Blistering
• Skin peeling
• Ulcers in your mouth, eyes, nose, or genitals. 
• fever 
• abnormal blood test results.
• Headache.
• Dizziness.
• Sleepiness, extreme tiredness, or insomnia (difficulty sleeping).
• Awareness of your heartbeat, which may be faster than usual.
• Chest pain.
• Flushing.
• Dry mouth.
• Loss of appetite, nausea, stomach pain, indigestion, diarrhea, or constipation.
• Weakness.
• Numbness or tingling in the hands or feet (referred to as ‘pins and needles’).
• Blurred vision.
• Abnormal blood test results indicating liver function (increased liver enzymes).
• Irritability.

Uncommon side effects:

• Back pain, neck pain, muscle pain, muscle weakness, leg cramps, joint pain, twitching, or tremor.
• Vertigo (a spinning sensation).
• Difficulty moving muscles smoothly, other movement problems, muscle tension, coordination problems.
• Hayfever symptoms including itchy/runny nose or watery eyes.
• Increased cough, asthma, or shortness of breath.
• Skin rash, acne, or itchy skin.
• Sweating.
• Changes in blood pressure (high or low), abnormal heart trace (ECG), and irregular or unusually slow heartbeat.
• Difficulty swallowing, swollen tongue, or mouth ulcers.
• Excess wind, reflux (bringing back stomach fluid), increased appetite, weight changes, thirst, or taste alteration.
• Vomiting.
• Migraine.
• Speech problems.
• Diabetes with increased blood sugar.
• High blood cholesterol.
• Swollen hands and feet.
• Disrupted sleep or abnormal dreams.
• Loss of sex drive.
• Nosebleeds, sore throat, or inflamed nasal passages (sinusitis).
• Abnormal vision or dry eyes.
• Abnormal urine or more frequent urination.
• Abnormal periods.
• Abnormal blood test results indicating changes in white blood cell counts.
• Restlessness with increased body movement