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Avalide (Irbesartan / Hydrochlorothiazide) - Side Effects and Adverse Reactions

 
 



ADVERSE REACTIONS

Clinical Trials Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The adverse reaction information from clinical trials does, however, provide a basis for identifying the adverse events that appear to be related to drug use and for approximating rates.

Irbesartan-Hydrochlorothiazide

AVALIDE (irbesartan-hydrochlorothiazide) Tablets has been evaluated for safety in 1694 patients treated for essential hypertension in 6 clinical trials. In Studies I through IV with AVALIDE, no adverse events peculiar to this combination drug product have been observed. Adverse events have been limited to those that were reported previously with irbesartan or hydrochlorothiazide (HCTZ). The overall incidence of adverse events was similar with the combination and placebo. In general, treatment with AVALIDE was well tolerated. For the most part, adverse events have been mild and transient in nature and have not required discontinuation of therapy. In controlled clinical trials, discontinuation of AVALIDE therapy due to clinical adverse events was required in only 3.6%. This incidence was significantly less (p=0.023) than the 6.8% of patients treated with placebo who discontinued therapy.

In these double-blind controlled clinical trials, the following adverse events reported with AVALIDE occurred in ≥1% of patients, and more often on the irbesartan-hydrochlorothiazide combination than on placebo, regardless of drug relationship:

  Irbesartan/HCTZ
(n=898)
(%)
Placebo
(n=236)
(%)
Irbesartan
(n=400)
(%)
HCTZ
(n=380)
(%)
Body as a Whole     
    Chest Pain2122
    Fatigue7343
    Influenza3122
Cardiovascular     
    Edema3322
    Tachycardia1011
Gastrointestinal     
    Abdominal Pain2122
    Dyspepsia/heartburn2102
    Nausea/vomiting3020
Immunology     
    Allergy1011
Musculoskeletal     
    Musculoskeletal Pain75610
NervousSystem     
    Dizziness8465
    Dizziness Orthostatic1011
Renal/Genitourinary     
    Abnormality Urination211ct2

The following adverse events were also reported at a rate of 1% or greater, but were as, or more, common in the placebo group: headache, sinus abnormality, cough, URI, pharyngitis, diarrhea, rhinitis, urinary tract infection, rash, anxiety/nervousness, and muscle cramp.

Adverse events occurred at about the same rates in men and women, older and younger patients, and black and non-black patients.

Adverse events in Studies V and VI were similar to those described above in Studies I through IV.

Irbesartan

Other adverse events that have been reported with irbesartan, without regard to causality, are listed below:

Body as a Whole: fever, chills, orthostatic effects, facial edema, upper extremity edema

Cardiovascular: flushing, hypertension, cardiac murmur, myocardial infarction, angina pectoris, hypotension, syncope, arrhythmic/conduction disorder, cardiorespiratory arrest, heart failure, hypertensive crisis

Dermatologic: pruritus, dermatitis, ecchymosis, erythema face, urticaria

Endocrine/Metabolic/Electrolyte Imbalances: sexual dysfunction, libido change, gout

Gastrointestinal: diarrhea, constipation, gastroenteritis, flatulence, abdominal distention

Musculoskeletal/Connective Tissue: musculoskeletal trauma, extremity swelling, muscle cramp, arthritis, muscle ache, musculoskeletal chest pain, joint stiffness, bursitis, muscle weakness

Nervous System: anxiety/nervousness, sleep disturbance, numbness, somnolence, vertigo, emotional disturbance, depression, paresthesia, tremor, transient ischemic attack, cerebrovascular accident

Renal/Genitourinary: prostate disorder

Respiratory: cough, upper respiratory infection, epistaxis, tracheobronchitis, congestion, pulmonary congestion, dyspnea, wheezing

Special Senses: vision disturbance, hearing abnormality, ear infection, ear pain, conjunctivitis

Hydrochlorothiazide

Other adverse events that have been reported with hydrochlorothiazide, without regard to causality, are listed below:

Body as a Whole: weakness

Digestive: pancreatitis, jaundice (intrahepatic cholestatic jaundice), sialadenitis, cramping, gastric irritation

Hematologic: aplastic anemia, agranulocytosis, leukopenia, hemolytic anemia, thrombocytopenia

Hypersensitivity: purpura, photosensitivity, urticaria, necrotizing angiitis (vasculitis and cutaneous vasculitis), fever, respiratory distress including pneumonitis and pulmonary edema, anaphylactic reactions

Metabolic: hyperglycemia, glycosuria, hyperuricemia

Musculoskeletal: muscle spasm

Nervous System/Psychiatric: restlessness

Renal: renal failure, renal dysfunction, interstitial nephritis

Skin: erythema multiforme including Stevens-Johnson syndrome, exfoliative dermatitis including toxic epidermal necrolysis

Special Senses: transient blurred vision, xanthopsia

Initial Therapy

In the moderate hypertension Study V (mean SeDBP between 90 and 110 mmHg), the types and incidences of adverse events reported for patients treated with AVALIDE were similar to the adverse event profile in patients on initial irbesartan or HCTZ monotherapy. There were no reported events of syncope in the AVALIDE treatment group and there was one reported event in the HCTZ treatment group. The incidences of pre-specified adverse events on AVALIDE, irbesartan, and HCTZ, respectively, were: 0.9%, 0%, and 0% for hypotension; 3.0%, 3.8%, and 1.0% for dizziness; 5.5%, 3.8%, and 4.8% for headache; 1.2%, 0%, and 1.0% for hyperkalemia; and 0.9%, 0%, and 0% for hypokalemia. The rates of discontinuation due to adverse events on AVALIDE, irbesartan alone, and HCTZ alone were 6.7%, 3.8%, and 4.8%.

In the severe hypertension (SeDBP ≥110 mmHg) Study VI, the overall pattern of adverse events reported through 7 weeks of follow-up was similar in patients treated with AVALIDE as initial therapy and in patients treated with irbesartan as initial therapy. The incidences of the pre-specified adverse events on AVALIDE and irbesartan, respectively, were: 0% and 0% for syncope; 0.6% and 0% for hypotension; 3.6% and 4.0% for dizziness; 4.3% and 6.6% for headache; 0.2% and 0% for hyperkalemia; and 0.6% and 0.4% for hypokalemia. The rates of discontinuation due to adverse events were 2.1% and 2.2%. [See Clinical Studies .]

Post-Marketing Experience

The following adverse reactions have been identified during post-approval use of AVALIDE. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Decisions to include these reactions in labeling are typically based on one or more of the following factors: (1) seriousness of the reaction, (2) frequency of reporting, or (3) strength of causal connection to AVALIDE.

The following have been very rarely reported: urticaria; angioedema (involving swelling of the face, lips, pharynx, and/or tongue); and hepatitis. Hyperkalemia has been rarely reported.

Very rare cases of jaundice have been reported with irbesartan.

Rare cases of rhabdomyolysis have been reported in patients receiving angiotensin II receptor blockers.

Laboratory Abnormalities

In controlled clinical trials, clinically important changes in standard laboratory parameters were rarely associated with administration of AVALIDE.

Creatinine, Blood Urea Nitrogen: Minor increases in blood urea nitrogen (BUN) or serum creatinine were observed in 2.3% and 1.1%, respectively, of patients with essential hypertension treated with AVALIDE alone. No patient discontinued taking AVALIDE due to increased BUN. One patient discontinued taking AVALIDE due to a minor increase in serum creatinine.

Liver Function Tests: Occasional elevations of liver enzymes and/or serum bilirubin have occurred. In patients with essential hypertension treated with AVALIDE alone, one patient was discontinued due to elevated liver enzymes.

Serum Electrolytes: [See Warnings and Precautions (5.2, 5.6) .]



REPORTS OF SUSPECTED AVALIDE SIDE EFFECTS / ADVERSE REACTIONS

Below is a sample of reports where side effects / adverse reactions may be related to Avalide. The information is not vetted and should not be considered as verified clinical evidence.

Possible Avalide side effects / adverse reactions in 83 year old female

Reported by a physician from United States on 2011-10-03

Patient: 83 year old female weighing 64.0 kg (140.8 pounds)

Reactions: Pleural Effusion

Adverse event resulted in: hospitalization

Suspect drug(s):
Avalide
    Administration route: Oral
    Start date: 2000-02-10

Blinded Therapy
    Administration route: Oral
    Indication: Atrial Fibrillation
    Start date: 2011-07-18

Dabigatran
    Administration route: Oral
    Start date: 2011-05-27

Metoprolol Tartrate
    Administration route: Oral
    Start date: 2011-05-27

Other drugs received by patient: Multi-Vitamins; Verelan; Fish OIL; Aldactone; Simvastatin



Possible Avalide side effects / adverse reactions in 50 year old male

Reported by a physician from United States on 2011-10-03

Patient: 50 year old male

Reactions: Blood Pressure Increased, Ventricular Extrasystoles, Palpitations, Tachycardia

Adverse event resulted in: life threatening event

Suspect drug(s):
Avalide



Possible Avalide side effects / adverse reactions in 58 year old female

Reported by a consumer/non-health professional from United States on 2011-10-19

Patient: 58 year old female

Reactions: Abdominal Discomfort, Nausea, Abdominal Pain Upper

Suspect drug(s):
Avalide

Other drugs received by patient: Premarin; Fosamax



See index of all Avalide side effect reports >>

Drug label data at the top of this Page last updated: 2009-01-30

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