Caduet Side Effects

Generic Name: amlodipine / atorvastatin

Note: This page contains information about the side effects of amlodipine / atorvastatin. Some of the dosage forms included on this document may not apply to the brand name Caduet.

Not all side effects for Caduet may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

For the Consumer

Applies to amlodipine / atorvastatin: oral tablet

In addition to its needed effects, some unwanted effects may be caused by amlodipine / atorvastatin. In the event that any of these side effects do occur, they may require medical attention.

You should check with your doctor immediately if any of these side effects occur when taking amlodipine / atorvastatin:

More common
  • Cough
  • difficulty with swallowing
  • dizziness
  • fast heartbeat
  • hives
  • itching
  • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  • skin rash
  • tightness in the chest
  • unusual tiredness or weakness
  • wheezing
  • Chest pain or discomfort
  • dilated neck veins
  • extra heartbeats
  • extreme fatigue
  • irregular breathing
  • irregular heartbeat
  • pulse irregularity
  • swelling of the face, fingers, feet, or lower legs
  • weight gain
Incidence not known
  • Blistering, peeling, or loosening of the skin
  • chills
  • dark-colored urine
  • diarrhea
  • fever
  • joint or muscle pain
  • muscle cramps or spasms
  • muscle stiffness
  • red, irritated eyes
  • red skin lesions, often with a purple center
  • sore throat
  • sores, ulcers, or white spots in the mouth or on the lips

If any of the following symptoms of overdose occur while taking amlodipine / atorvastatin, get emergency help immediately:

Symptoms of overdose
  • Blurred vision
  • confusion
  • dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  • feeling of warmth
  • redness of the face, neck, arms, and occasionally, upper chest
  • sweating

Some of the side effects that can occur with amlodipine / atorvastatin may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

More common
  • Body aches or pain
  • congestion
  • difficulty with moving
  • headache
  • lower back or side pain
  • pain or tenderness around the eyes and cheekbones
  • painful or difficult urination
  • runny or stuffy nose
  • tender, swollen glands in the neck
  • voice changes
Less common
  • Accidental injury
  • acid or sour stomach
  • belching
  • bloated or full feeling
  • difficulty having a bowel movement (stool)
  • excess air or gas in the stomach or intestines
  • general feeling of discomfort or illness
  • heartburn
  • indigestion
  • lack or loss of strength
  • loss of appetite
  • nausea
  • passing gas
  • shivering
  • sleepiness or unusual drowsiness
  • stomach discomfort, upset, or pain
  • trouble sleeping
  • vomiting
  • Anxiety
  • bad, unusual, or unpleasant (after) taste
  • blistering, crusting, irritation, itching, or reddening of the skin
  • burning feeling in the chest or stomach
  • burning while urinating
  • change in near or distance vision
  • change in taste
  • change in the color of the skin
  • cold and clammy skin
  • cracked, dry, scaly skin
  • difficulty in focusing eyes
  • dry mouth
  • dryness of the eyes
  • excessive muscle tone
  • frequent urination
  • hair loss or thinning of the hair
  • increased appetite
  • increased volume of pale, dilute urine
  • irritability
  • lack of feeling or emotion
  • loose stools
  • loss of memory
  • muscle tension or tightness
  • muscle weakness
  • problems with memory
  • restlessness
  • severe and throbbing headache
  • shakiness and unsteady walk
  • sneezing
  • tenderness in the stomach area
  • transient, mild, or pleasant aromatic odor
  • trembling, or other problems with muscle control or coordination
  • twitching
  • uncaring
  • unsteadiness
  • welts

For Healthcare Professionals

Applies to amlodipine / atorvastatin: oral tablet


Worsened angina has been rarely associated with the use of amlodipine (as with other calcium channel blockers).

Bradycardia, hypotension, and syncope have been reported in less than 1% of patients receiving amlodipine.[Ref]

Cardiovascular side effects associated with amlodipine are dose-related, are usually the result of vasodilation, and include flushing in less than 1% and peripheral edema in 2% of patients. Peripheral edema may become a chronic problem, and may occur in up to 10% of patients who are receiving 10 mg doses. Palpitations occur 1% to 5% (10 mg) of patients. Recent data have shown that the use of amlodipine in patients with NYHA Class III or IV heart failure is not associated with worsened heart failure.

Cardiovascular side effects occurring since market introduction of atorvastatin have included angioneurotic edema, peripheral edema, and chest pain. Atorvastatin may also increase the incidence of hemorrhagic stroke in patients with a history of recent stroke or TIA.[Ref]


Endocrine side effects including a single case of gynecomastia has been associated with the use of amlodipine. The patient's gynecomastia resolved upon substitution of amlodipine with an unrelated antihypertensive agent. The use of amlodipine has not been associated with adverse effects on glucose metabolism or serum lipids.

Endocrine adverse effects associated with the use of other HMG-CoA reductase inhibitors have included hypospermia, gynecomastia and thyroid dysfunction.[Ref]


Gastrointestinal side effects associated with amlodipine include nausea in 3% of patients.

Gastrointestinal symptoms have been the most common adverse effects and have included constipation, flatulence, dyspepsia and abdominal pain. These effects occurred in less than 4% of patients. Diarrhea has been reported in up to 5.3% of patients and may be dose-related.[Ref]

Anorexia, constipation, dyspepsia, vomiting, flatulence, and diarrhea have been reported in less than 1% of patients receiving amlodipine. As with some other calcium channel blockers, rare cases of gingival hyperplasia have been associated with amlodipine.

Other gastrointestinal side effects observed with HMG-CoA reductase inhibitors have included pancreatitis, anorexia and vomiting. Most effects tended to be mild and transient.[Ref]


A case study reports a 34-year-old woman with a history of chronic renal failure secondary to glomerulonephritis, who was started on amlodipine for uncontrolled hypertension. Three days later the patient developed severe thrombocytopenia. After discontinuation of the drug, the platelet count returned to normal.[Ref]

Hematological side effects have included isolated cases of thrombocytopenia during amlodipine therapy.

Hematologic side effects including hemolytic anemia, thrombocytopenia, and leukopenia have occurred with HMG-CoA reductase inhibitors. These effects may be manifestations of a hypersensitivity reaction.[Ref]


A 62-year-old man with hypertension and psoriasis developed erythema multiforme within three days after starting amlodipine. The rash resolved upon substitution with nifedipine.[Ref]

Hypersensitivity reactions have rarely been reported, although experience with amlodipine is limited. A single case of erythema multiforme during amlodipine therapy has been reported.

Hypersensitivity reactions have been observed rarely with HMG-CoA reductase inhibitors. Symptoms have included anaphylaxis, angioedema, allergic reaction, urticaria, fever, chills, flushing, malaise and dyspnea.[Ref]

Nervous system

Nervous system side effects associated with amlodipine include headache in 8%, dizziness in 3%, and fatigue in 5% of patients. Vertigo, tremors, and paresthesias have been reported in less than 1% of patients receiving amlodipine.

Nervous system side effects of headache and weakness have occurred with HMG-CoA reductase inhibitors.[Ref]


A single case of acute porphyria exacerbation has been associated with the use of amlodipine, and confirmed upon rechallenge in the same patient. Calcium channel blockers have been suggested as possibly unsafe in patients with this condition.

Other side effects reported during clinical trials with atorvastatin (in greater than or equal to 2% of patients) include infection, accidental injury, flu syndrome, abdominal pain and back pain. Fatigue has also been reported in postmarketing studies with atorvastatin.[Ref]

Edema, flushing, palpitations, and somnolence appear to be more common in women than in men.[Ref]


Dermatologic reactions have occurred rarely during atorvastatin therapy. In premarketing trials up to 3.8% of patients complained of a rash. Since market introduction, bullous rashes including erythema multiforme, Stevens-Johnson syndrome, and toxic epidermal necrolysis have occurred.[Ref]


Atorvastatin generally has been well tolerated. Less than 2% of patients in premarketing clinical studies discontinued treatment due to adverse effects.[Ref]


Genitourinary adverse effects associated with other HMG-CoA reductase inhibitors have included erectile dysfunction and impotence. Gynecomastia has been reported in postmarketing experience with amlodipine, although causality has not been determined.[Ref]


Immunologic side effects including a possible case of atorvastatin-induced reversible positive antinuclear antibodies have been reported.[Ref]


Psychiatric side effects of HMG-CoA reductase inhibitors have included decreases in libido, anxiety, depression and insomnia.[Ref]


Renal side effects including acute renal failure secondary to rhabdomyolysis has been reported with HMG-CoA reductase inhibitors.[Ref]


Respiratory symptoms reported since market introduction have included bronchitis, rhinitis, pharyngitis, and sinusitis.[Ref]


Hepatic side effects including altered liver function have been observed with all HMG-CoA reductase inhibitors. In premarketing clinical trials, up to 0.7% of patients experienced persistent, elevated AST and/or ALT values greater than three times the upper normal limits on two or more occasions. Elevations of liver enzymes may be dose-related. Other hepatic side effects of the HMG-CoA class have included hepatitis, cholestatic jaundice, fatty changes in the liver, cirrhosis and fulminant hepatic necrosis.[Ref]

In clinical trials, liver enzyme elevations returned to pretreatment levels upon discontinuation or dose reduction of atorvastatin. Liver function tests should be closely monitored as most patients remain asymptomatic with elevated liver enzymes. Treatment should be discontinued if values remain elevated. Nawrocki and colleagues reported elevated bilirubin levels in 2/30 patients and elevated AST and ALT levels in 1/30 patients.[Ref]


Some drugs in the HMG-CoA reductase inhibitor class have been associated with rare cases of severe myopathy and rhabdomyolysis, accompanied by increases in creatine kinase, myoglobinuria, proteinuria and renal failure. The risk of myopathy is increased with concurrent administration of cyclosporine, fibric acid derivatives, erythromycin, niacin, or azole antifungals.

Patients should be instructed to promptly report symptoms of muscle pain, weakness, or tenderness. If such symptoms develop, creatine kinase should be measured, and if markedly elevated, atorvastatin should be discontinued. The value of routine creatine kinase monitoring is not known.[Ref]

Musculoskeletal side effects have included uncomplicated myalgia and arthralgia during atorvastatin therapy. Rhabdomyolysis and myopathy related to HMG-CoA reductase inhibitor use have been reported rarely. One case of atorvastatin-induced dermatomyositis has been reported. Tendon rupture has also been reported in postmarketing studies.

In addition, some data have suggested that exposure to HMG-CoA reductase inhibitors is associated with a decreased risk of bone fractures in persons older than 50 years of age.[Ref]


Ocular side effects including a case of reversible ophthalmoplegia as well as a case of ocular myasthenia have been reported during atorvastatin use.[Ref]

A 60-year-old woman with hypercholesterolemia treated with atorvastatin developed painless horizontal diplopia, vertigo, blurry vision, elevated anti-acetylcholine receptor (anti-AchR) antibodies levels, ataxia, and paresthesia of the upper extremities. No other medications were reported. Neurological exam revealed generalized hyperreflexia and finger-nose and gait ataxia. Ptosis was present in both upper eyelids. Discontinuation of atorvastatin resulted in symptom resolution and anti-AchR levels within normal limits.

A 67-year-old women treated for hypercholesterolemia with atorvastatin developed myogenic ptosis and variable incomitant horizontal and vertical strabismus consistent with ocular myasthenia. Following discontinuation of atorvastatin, the patient experienced significant clinical improvement with only mild residual aponeurotic ptosis after 2 months.[Ref]


1. "Product Information. Caduet (amlodipine-atorvastatin)." Pfizer U.S. Pharmaceuticals Group, New York, NY.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.