Stop taking medication and get emergency help immediately if you experience any of the following symptoms of a hypertensive crisis:
Severe chest pain; severe headache; stiff or sore neck; enlarged pupils; fast or slow heartbeat; increased sensitivity of eyes to light; increased sweating (possibly with fever or cold, clammy skin); nausea and vomiting.
Common Side Effects:Check with your doctor if any of the following side effects continue or are bothersome:
More Common: Blurred vision; decreased amount of urine; decreased sexual ability; mild dizziness or lightheadedness, especially when getting up from a lying or sitting position; drowsiness; mild headache; increased appetite (especially for sweets) or weight gain; increased sweating; muscle twitching during sleep; nausea; restlessness; shakiness or trembling; tiredness and weakness; trouble sleeping.
Less Common or Rare: Chills; constipation; decreased appetite; dryness of mouth.
Always Notify Doctor:
More Common: Severe dizziness or lightheadedness, especially when getting up from a lying or sitting position.
Less Common: Diarrhea; pounding or rapid heartbeat; swelling of feet or lower legs; unusual excitement or nervousness.
Rare: Dark urine; sore throat; skin rash; slurred speech; staggering walk; yellow eyes or skin; fever.
Overdose Effects - Notify Doctor / Seek Emergency Help:May be more severe than side effects occurring at regular doses, or several may occur together:
Severe anxiety; confusion; convulsions (seizures); cool, clammy skin; severe dizziness; severe drowsiness; fast and irregular pulse; fever; hallucinations (seeing, hearing, or feeling things that are not there); severe headache; high or low blood pressure; muscle stiffness; sweating; troubled breathing; significant trouble in sleeping; unusual irritability.
Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.
Disclaimer: This is not intended to be all-inclusive or to replace information provided by your doctor or with the prescription from the manufacturer.