Amlodipine, known by the brand name Norvasc, is a prescription drug used to treat high blood pressure. Amlodipine functions as a calcium channel blocker and relaxes and widens blood vessels to reduce the workload on the heart. Amlodipine is generally well tolerated. The side effects of Amlodipine are rare and typically mild but should be considered before beginning an Amlodipine prescription.
Changes in Heart Rhythms
Amlodipine can cause changes in heartbeat rhythms, leading to heart palpitations, racing heart rate, changes in blood pressure and chest pains. These changes in heart function may lead to peripheral edema, or a swelling in the hands, arms, legs and feet. Drugs.com reports that up to 10 percent of Amlodipine patients will experience peripheral edema as a result of Amlodipine use. Symptoms of edema, chest pains or other signs of high blood pressure should be reported to a physician.
Headache
Headaches are a common side effect of Amlodipine, affecting about 7 percent of individuals taking Amlodipine, says Drugs.com and Norvasc.com. The incidence of migraine headaches as a side effect to Amlodipine is much lower, reported by less than 1 percent of Amlodipine users. Dizziness is reported by about 3 percent of the drug's users.
Muscle Pain
General muscle pain, particularly back pain, is reported as a side effect of Amlodipine by about 2 percent of patients, according to Drugs.com. Muscle cramping and general loss of muscle strength are also commonly reported by Amlodipine users. These side effects are typically harmless and occur as the body adjusts to the drug. Individuals who experience persistent muscle pain while taking Amlodipine should discuss such side effects with a physician.
Indigestion
Indigestion and gastrointestinal discomfort are mild, generally harmless side effects of Amlodipine. According to Drugs.com, about 1 percent of people taking Amlodipine will experience dyspepsia-related side effects while using Amlodipine. MayoClinic.com lists these side effects, which include indigestion, acidic or sour stomach, belching and heartburn. These side effects generally do not require medical attention but should be brought to the attention of a doctor if they persist.
Sexual Dysfunction
Sexual dysfunction has been reported by individuals taking Amlodipine and can affect up to 2 percent of Amlodipine patients, explains Drugs.com. Side effects relating to sexual dysfunction can affect both male and female users.
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