The following serious and otherwise important adverse reaction is described in greater detail in the Warnings and Precautions section of the label:
Anaphylactic Reactions [see WARNINGS AND PRECAUTIONS (5.1)]
6.1 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 with rates in the clinical trials of another drug and may not reflect the rates observed in practice.
Tablets
Multiple-dose Dosing Regimens with 7 to 10 Days' Duration: In multiple-dose clinical trials, 912 subjects were treated with cefuroxime axetil (125 to 500 mg twice daily). It is noted that 125 mg twice daily is not an approved dosage. Twenty (2.2%) subjects discontinued medication due to adverse reactions. Seventeen (85%) of the 20 subjects who discontinued therapy did so because of gastrointestinal disturbances, including diarrhea, nausea, vomiting, and abdominal pain. The percentage of subjects treated with cefuroxime axetil who discontinued study drug because of adverse reactions was similar at daily doses of 1,000, 500, and 250 mg (2.3%, 2.1%, and 2.2%, respectively). However, the incidence of gastrointestinal adverse reactions increased with the higher recommended doses.
The adverse reactions in Table 5 are for subjects (n = 912) treated with cefuroxime axetil in multiple-dose clinical trials.
The following adverse reactions occurred in less than 1% but greater than 0.1% of subjects (n = 912) treated with cefuroxime axetil in multiple-dose clinical trials.
Immune System Disorders: Hives, swollen tongue.
Metabolism and Nutrition Disorders: Anorexia.
Nervous System Disorders: Headache.
Cardiac Disorders: Chest pain.
Respiratory Disorders: Shortness of breath.
Gastrointestinal Disorders: Abdominal pain, abdominal cramps, flatulence, indigestion, mouth ulcers.
Skin and Subcutaneous Tissue Disorders: Rash, itch
Renal and Urinary Disorders: Dysuria.
Reproductive System and Breast Disorders: Vaginitis, vulvar itch.
General Disorders and Administration Site Conditions: Chills, sleepiness, thirst.
Investigations: Positive Coombs' test.
5-Day Regimen: In clinical trials using cefuroxime axetil tablets 250 mg twice daily in the treatment of secondary bacterial infections of acute bronchitis, 399 subjects were treated for 5 days and 402 subjects were treated for 10 days. No difference in the occurrence of adverse reactions was found between the 2 regimens.
Early Lyme Disease with 20-Day Regimen: Two multicenter trials assessed cefuroxime axetil tablets 500 mg twice daily for 20 days. The most common drug-related adverse experiences were diarrhea (10.6%), Jarisch-Herxheimer reaction (5.6%), and vaginitis (5.4%). Other adverse experiences occurred with frequencies comparable to those reported with 7 to 10 days' dosing.
Single-dose Regimen for Uncomplicated Gonorrhea: In clinical trials using a single 1,000 mg dose of cefuroxime axetil tablets, 1,061 subjects were treated for uncomplicated gonorrhea.
The adverse reactions in Table 6 were for subjects treated with a single dose of 1,000 mg cefuroxime axetil tablets in US clinical trials.
The following adverse reactions occurred in less than 1% but greater than 0.1% of subjects (n = 1,061) treated with a single dose of cefuroxime axetil tablets 1,000 mg for uncomplicated gonorrhea in US clinical trials.
Infections and Infestations: Vaginal candidiasis.
Nervous System Disorders: Headache, dizziness, somnolence.
Cardiac Disorders: Tightness/pain in chest, tachycardia.
Gastrointestinal Disorders: Abdominal pain, dyspepsia.
Skin and Subcutaneous Tissue Disorders: Erythema, rash, pruritus.
Musculoskeletal and Connective Tissue Disorders: Muscle cramps, muscle stiffness, muscle spasm of neck, lockjaw-type reaction.
Renal and Urinary Disorders: Bleeding/pain in urethra, kidney pain.
Reproductive System and Breast Disorders: Vaginal itch, vaginal discharge.
6.2 Postmarketing Experience
The following adverse reactions have been identified during post-approval use of cefuroxime axetil. 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.
Blood and Lymphatic System Disorders
Hemolytic anemia, leukopenia, pancytopenia, thrombocytopenia.
Gastrointestinal Disorders
Pseudomembranous colitis [see WARNINGS AND PRECAUTIONS (5.2)].
Hepatobiliary Disorders
Hepatic impairment including hepatitis and cholestasis, jaundice.
Immune System Disorders
Anaphylaxis, serum sickness-like reaction.
Investigations
Increased prothrombin time.
Nervous System Disorders
Seizure, encephalopathy.
Renal and Urinary Disorders
Renal dysfunction.
Skin and Subcutaneous Tissue Disorders
Angioedema, erythema multiforme, Stevens-Johnson syndrome, toxic epidermal necrolysis, urticaria.
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