Felodipine Side Effects

Brand Names: Plendil

Please note - some side effects for Felodipine may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA at http://www.fda.gov/medwatch/ or 1-800-FDA-1088 (1-800-332-1088).

Side Effects of Felodipine - for the consumer

Felodipine

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Felodipine:

Diarrhea; dizziness; flushing; headache; mild swelling of gums; nausea; weakness.

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); breathing problems; chest pain; enlarged breasts in men; fast or irregular heartbeat; heart problems; impotence; lightheadedness and fainting; swelling of the ankles or hands.

For the professional

Felodipine

In controlled studies in the United States and overseas, approximately 3,000 patients were treated with Felodipine as either the extended-release or the immediate-release formulation.

The most common clinical adverse events reported with Felodipine administered as monotherapy at the recommended dosage range of 2.5 mg to 10 mg once a day were peripheral edema and headache. Peripheral edema was generally mild, but it was age and dose related and resulted in discontinuation of therapy in about 3% of the enrolled patients. Discontinuation of therapy due to any clinical adverse event occurred in about 6% of the patients receiving Felodipine, principally for peripheral edema, headache, or flushing.

Adverse events that occurred with an incidence of 1.5% or greater at any of the recommended doses of 2.5 mg to 10 mg once a day (Felodipine, N = 861; Placebo, N = 334), without regard to causality, are compared to placebo and are listed by dose in the table below. These events are reported from controlled clinical trials with patients who were randomized to a fixed dose of Felodipine or titrated from an initial dose of 2.5 mg or 5 mg once a day. A dose of 20 mg once a day has been evaluated in some clinical studies. Although the antihypertensive effect of Felodipine is increased at 20 mg once a day, there is a disproportionate increase in adverse events, especially those associated with vasodilatory effects.

Adverse events that occurred in 0.5 up to 1.5% of patients who received Felodipine in all controlled clinical trials at the recommended dosage range of 2.5 mg to 10 mg once a day, and serious adverse events that occurred at a lower rate, or events reported during marketing experience (those lower rate events are in italics) are listed below. These events are listed in order of decreasing severity within each category, and the relationship of these events to administration of Felodipine is uncertain: Body as a Whole: Chest pain, facial edema, flu-like illness; Cardiovascular: Myocardial infarction, hypotension, syncope, angina pectoris, arrhythmia, tachycardia, premature beats; Digestive: Abdominal pain, diarrhea, vomiting, dry mouth, flatulence, acid regurgitation; Endocrine: Gynecomastia; Hematologic: Anemia; Metabolic: ALT (SGPT) increased; Musculoskeletal: Arthralgia, back pain, leg pain, foot pain, muscle cramps, myalgia, arm pain, knee pain, hip pain; Nervous/Psychiatric: Insomnia, depression, anxiety disorders, irritability, nervousness, somnolence, decreased libido; Respiratory: Dyspnea, pharyngitis, bronchitis, influenza, sinusitis, epistaxis, respiratory infection; Skin: Angioedema, contusion, erythema, urticaria, leukocytoclastic vasculitis; Special Senses: Visual disturbances; Urogenital: Impotence, urinary frequency, urinary urgency, dysuria, polyuria.

Gingival Hyperplasia — Gingival hyperplasia, usually mild, occurred in < 0.5% of patients in controlled studies. This condition may be avoided or may regress with improved dental hygiene.

Clinical Laboratory Test Findings

Serum Electrolytes— No significant effects on serum electrolytes were observed during short- and long-term therapy.

Serum Glucose— No significant effects on fasting serum glucose were observed in patients treated with Felodipine in the U.S. controlled study.

Liver Enzymes— 1 of 2 episodes of elevated serum transaminases decreased once drug was discontinued in clinical studies; no follow-up was available for the other patient.

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