Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking Norvasc.

• More common side effects may include:
  Dizziness, fatigue, flushing, fluid retention and swelling, headache, palpitations (fluttery or throbbing heartbeat)

• Less common side effects may include:
  Abdominal pain, nausea, sleepiness

• Rare side effects may include:
  Abnormal dreams, agitation, allergic reactions, altered sense of smell or taste, anxiety, apathy, back pain, chest pain, cold and clammy skin, conjunctivitis (pinkeye), constipation, coughing, depression, diarrhea, difficult or labored breathing, difficult or painful urination, difficulty swallowing, dizziness or light-headedness when standing, double vision, dry mouth, dry skin, excessive urination, eye pain, fainting, frequent urination, gas, general feeling of illness, hair loss, heart failure, hives, hot flashes, inability to sleep, increased appetite, increased sweating, indigestion, inflamed blood vessels, inflamed pancreas, irregular heartbeat, irregular pulse, itching, joint pain or problems, lack of coordination, lack of sensation, loose stools, loss of appetite, loss of memory, loss of sense of identity, low blood pressure, migraine, muscle cramps or pain, muscle weakness, nasal inflammation, nervousness, nosebleed, pain, purple or red spots on the skin, rapid heartbeat, rash, ringing in the ears, sexual problems, skin discoloration, skin inflammation, slow heartbeat, stomach inflammation, thirst, tingling or "pins and needles," tremor, twitching, urinating at night, urinating problems, vertigo, vision problems, vomiting, weakness, weight gain

Why should Norvasc not be prescribed?