AZITROX
Interaction
Antacids (aluminum and magnesium-containing) do not affect the bioavailability of azithromycin, but reduce its maximum concentration in the blood by 30%, so the interval between their use should be at least 1 hour before or 2 hours after taking these drugs.
When taken simultaneously with ergotamine and dihydroergotamine derivatives, their toxic effects (vasospasm, dysesthesia) may be enhanced. When used together with indirect anticoagulants of the coumarin series (warfarin) and azithromycin (in normal doses), patients need careful monitoring of prothrombin time. Caution should be exercised when co-prescribing terfenadine and azithromycin, since it has been found that concomitant use of terfenadine and macrolides can cause arrhythmia and prolongation of the QT interval. Based on this, the above complications cannot be excluded when taking terfenadine and azithromycin together.
When used simultaneously with cyclosporine, it is necessary to monitor the concentration of cyclosporine in the blood.
When taking digoxin and azithromycin together, it is necessary to monitor the concentration of digoxin in the blood, since many macrolides increase the absorption of digoxin in the intestine.
When used simultaneously with nelfinavir, it is possible to increase the frequency of adverse reactions of azithromycin (decreased hearing, increased activity of liver transaminases).
When azithromycin and zidovudine are taken together, azithromycin does not affect the pharmacokinetic parameters of zidovudine in the blood plasma or the renal excretion of it and its glucuronide metabolite, but the concentration of the active metabolite, phosphorylated zidovudine, in peripheral blood mononuclear cells increases. The clinical significance of this fact has not been determined.
When taking azithromycin and rifabutin simultaneously, in rare cases, the development of neutropenia is possible, the mechanism of development of which, as well as the presence of a cause-and-effect relationship with taking the drug, have not been established.
Azithromycin does not affect the blood concentrations of carbamazepine, cimetidine, didanosine, efavirenz, fluconazole, indinavir, midazolam, theophylline, triazolam, trimethoprim/sulfamethoxazole, cetirizine, sildenafil, atorvastatin, rifabutin and methylprednisolone when used simultaneously.
The possibility of inhibition of the CYP3A4 isoenzyme by drugs of the macrolide group should be taken into account when used simultaneously with cyclosporine, terfenadine, ergot alkaloids, cisapride, pimozide, quinidine, astemizole and other drugs whose metabolism occurs with the participation of this enzyme; however, this type of interaction was not observed when using azithromycin . No specific studies have been conducted to study interactions with these drugs.
Azitrox powder for the preparation of suspension for oral administration 100 mg/5 ml 20 ml in Saratov
Take orally, 1 hour before or 2 hours after meals, 1 time per day.
To prepare the suspension
Add 9.5 ml of water (distilled or boiled and cooled) to the bottle with powder. Measure the water using the dosing pipette included with the bottle. Shake the contents of the bottle thoroughly until a homogeneous suspension is obtained. The actual volume of the prepared suspension will be 20 ml.
The suspension must be shaken before each use.
To dispense the finished suspension, use a dosing pipette or measuring spoon.
Immediately after taking the suspension, you need to drink a few sips of water to rinse and swallow the drug remaining in the mouth. After use, a measuring spoon or pipette, which is previously disassembled, washed with running water, dried and stored with the drug.
Children over 6 months
For infections of the upper and lower respiratory tract, ENT organs, skin and soft tissues (except for erythema migrans): at the rate of 10 mg/kg body weight 1 time per day for 3 days (course dose 30 mg/kg).
Children weighing up to 10 kg are recommended to take the drug in powder form to prepare an oral suspension with a concentration of 100 mg/5 ml.
- For children weighing 5 kg - 2.5 ml (50 mg) suspension
- For children weighing 6 kg - 3 ml (60 mg) suspension,
- For children weighing 7 kg - 3.5 ml (70 mg) suspension,
- For children weighing 8 kg - 4 ml (80 mg) suspension,
- For children weighing 9 kg - 4.5 ml (90 mg) suspension,
- For children weighing 10-14 kg - 5 ml (100 mg) suspension,
In the treatment of the initial stage of Lyme disease ( erythema migrans)
: once a day: on the 1st day - at a dose of 20 mg/kg body weight, then from the 2nd to the 5th day at a dose of 10 mg/kg body weight. The course dose is 60 mg/kg body weight.
1st day:
- For a patient weighing 5 kg - 5 ml (100 mg) of suspension,
- For a patient weighing 6 kg - 6 ml (120 mg) of suspension,
- For a patient weighing 7 kg - 7 ml (140 mg) of suspension,
- For a patient weighing 8 kg - 8 ml (160 mg) of suspension,
- For a patient weighing 9 kg - 9 ml (180 mg) of suspension,
- For a patient weighing 10-14 kg - 10 ml (200 mg) of suspension.
From 2nd to 5th day:
- For a patient weighing 5 kg, 2.5 ml (50 mg) suspension,
- For a patient weighing 6 kg, 3 ml (60 mg) suspension,
- For a patient weighing 7 kg, 3.5 ml (70 mg) suspension,
- For a patient weighing 8 kg, 4 ml (80 mg) suspension,
- For a patient weighing 9 kg, 4.5 ml (90 mg) suspension,
- For a patient weighing 10-14 kg, 5 ml (100 mg) of suspension.
Patients with impaired renal function.
If renal function is impaired (creatinine clearance more than 40 ml/min), no dose adjustment is required. Patients with impaired liver function.
For moderate liver dysfunction, no dose adjustment is required.
Azitrox 100mg/5ml 1 pc. powder for the preparation of suspension for oral administration
Composition and release form Azitrox 100mg/5ml 1 pc. powder for the preparation of suspension for oral administration
Powder for the preparation of a suspension for oral administration - 5 ml of the prepared suspension: azithromycin 100 mg.
15.9 g - bottles complete with a measuring spoon and pipette for dosing - cardboard packs.
Directions for use and doses
For oral administration
The drug is taken orally 1 time/day 1 hour before or 2 hours after meals, without chewing.
Adults and children over 12 years of age and weighing more than 45 kg
For infections of the upper and lower respiratory tract, ENT organs, for infections of the skin and soft tissues (except for chronic migratory erythema) - 500 mg / day in 1 dose for 3 days (course dose - 1.5 g).
For acne vulgaris of moderate severity - 500 mg 1 time / day for 3 days, then 500 mg 1 time per week for 9 weeks; course dose - 6 g. The first weekly dose should be taken 7 days after taking the first daily dose (8th day from the start of treatment), the next 8 weekly doses - with an interval of 7 days.
For acute infections of the genitourinary organs (uncomplicated urethritis or cervicitis) - 1 g once.
For Lyme disease (borreliosis) for the treatment of stage I (erythema migrans) - 1 g on the 1st day and from the 2nd to the 5th day - 500 mg daily (course dose - 3 g).
For the treatment of elderly patients over 65 years of age, the same doses are used as for adults. Since this category of patients may have proarrhythmogenic factors, it is necessary to pay special attention to the possibility of developing arrhythmia and ventricular tachycardia of the “pirouette” type.
If renal function is impaired (creatinine clearance more than 40 ml/min), no dose adjustment is required.
For moderate liver dysfunction, no dose adjustment is required.
For IV infusions
Administered intravenously, over 3 hours at a concentration of 1 mg/ml, over 1 hour at a concentration of 2 mg/ml. Administration at higher concentrations should be avoided due to the risk of reactions at the injection site.
Do not administer intravenously or intramuscularly!
For community-acquired pneumonia, a dose of 500 mg is prescribed once a day for at least 2 days. If necessary, according to the decision of the attending physician, the course of treatment can be extended, but should not exceed 5 days. After completing the IV administration, it is recommended to prescribe azithromycin orally at a daily dose of 500 mg 1 time / day until the 7-10-day general course of treatment is completed.
For infectious and inflammatory diseases of the pelvic organs, a dose of 500 mg is prescribed 1 time / day for 2 days. The maximum course of treatment with the drug when administered intravenously is 5 days. After completing the IV administration, it is recommended to prescribe azithromycin orally at a dose of 250 mg/day until the 7-day general course of treatment is completed.
The timing of the transition from intravenous administration of azithromycin to oral administration is determined by the doctor in accordance with the clinical examination data.
Patients with mild to moderate renal impairment (creatinine clearance > 40 ml/min) do not require dose adjustment.
In patients with mild to moderate liver dysfunction, no dose adjustment is required.
In elderly patients, no dose adjustment is required. Since this category of patients may have proarrhythmogenic conditions, azithromycin should be used with caution due to the high risk of developing arrhythmias, incl. ventricular ar.
The effectiveness and safety of azithromycin for intravenous infusion in children and adolescents under 18 years of age has not been established.
Indications for use Azitrox 100mg/5ml 1 pc. powder for the preparation of suspension for oral administration
Infectious and inflammatory diseases caused by microorganisms sensitive to the drug:
- infections of the upper respiratory tract and ENT organs (including tonsillitis, sinusitis, tonsillitis, otitis media);
- scarlet fever;
— infections of the lower respiratory tract (including bacterial and atypical pneumonia, bronchitis);
— infections of the skin and soft tissues (including erysipelas, impetigo, secondary infected dermatoses);
- infections of the urogenital tract (including urethritis and/or cervicitis);
— Lyme disease (borreliosis) in the initial stage (erythema migrans);
- diseases of the stomach and duodenum associated with Helicobacter pylori (as part of combination therapy).
Contraindications
Hypersensitivity to azithromycin, erythromycin, other macrolides or ketolides; hypersensitivity to the excipients of the drug used; severe liver dysfunction; severe renal dysfunction (CK
With caution: myasthenia gravis; mild to moderate liver dysfunction; mild to moderate renal dysfunction (creatinine clearance > 40 ml/min); patients with the presence of proarrhythmogenic factors (especially in old age) - with congenital or acquired prolongation of the QT interval, patients receiving therapy with antiarrhythmic drugs of classes IA (quinidine, procainamide) and III (dofetilide, amiodarone and sotalol), cisapride, terfenadine, antipsychotic drugs ( pimozide), antidepressants (citalopram), fluoroquinolones (moxifloxacin and levofloxacin), with water and electrolyte imbalance, especially with hypokalemia or hypomagnesemia, with clinically significant bradycardia, arrhythmia or severe heart failure; simultaneous use of digoxin, warfarin, cyclosporine.
Application of Azitrox 100mg/5ml 1 pc. powder for the preparation of a suspension for oral administration during pregnancy and lactation
Azithromycin penetrates the placental barrier. Use during pregnancy is possible only in cases where the expected benefit to the mother outweighs the potential risk to the fetus.
If it is necessary to use azithromycin during lactation, the issue of stopping breastfeeding should be decided.
Application is possible according to the dosage regimen.
special instructions
Use with caution in patients with mild to moderate liver dysfunction due to the possibility of developing fulminant hepatitis and severe liver failure. If there are symptoms of liver dysfunction, such as rapidly increasing asthenia, jaundice, darkening of urine, bleeding tendency, hepatic encephalopathy, azithromycin therapy should be discontinued and a study of the functional state of the liver should be performed.
For mild to moderate renal dysfunction (creatinine clearance > 40 ml/min), azithromycin therapy should be carried out with caution under monitoring the state of renal function.
With long-term use of azithromycin, the development of pseudomembranous colitis caused by Clostridium difficile, both in the form of mild diarrhea and severe colitis, is possible. If antibiotic-associated diarrhea develops during the use of azithromycin, as well as 2 months after the end of therapy, pseudomembranous colitis caused by Clostridium difficile should be excluded.
When treated with macrolides, incl. azithromycin, prolongation of cardiac repolarization and QT interval was observed, increasing the risk of developing cardiac arrhythmias, incl. ari.
Use in pediatrics
The effectiveness and safety of azithromycin for intravenous infusion in children and adolescents under 18 years of age has not been established.
When using azithromycin for oral administration in children, the dosage form of the drug must strictly comply with the age of the patient.
Impact on the ability to drive vehicles and operate machinery
With the development of undesirable effects on the nervous system and organ of vision, patients should be careful when performing actions that require increased concentration and speed of psychomotor reactions
Not recommended for use in patients with impaired liver function.
Use with caution in case of impaired renal function.
Azithromycin should be taken at least 1 hour before or 2 hours after meals or antacids.
Side effects Azitrox 100mg/5ml 1 pc. powder for the preparation of suspension for oral administration
Infectious diseases: infrequently - candidiasis (including the mucous membrane of the oral cavity and genitals), pneumonia, pharyngitis, gastroenteritis, respiratory diseases, rhinitis; unknown frequency - pseudomembranous colitis.
From the blood and lymphatic system: infrequently - leukopenia, neutropenia, eosinophilia; very rarely - thrombocytopenia, hemolytic anemia.
From the side of metabolism: infrequently - anorexia.
Allergic reactions: uncommon - angioedema, hypersensitivity reaction; unknown frequency - anaphylactic reaction.
From the nervous system: often - headache; infrequently - dizziness, disturbance of taste, paresthesia, drowsiness, insomnia, nervousness; rarely - agitation; unknown frequency - hypoesthesia, anxiety, aggression, fainting, convulsions, psychomotor hyperactivity, loss of smell, perversion of smell, loss of taste, myasthenia gravis, delirium, hallucinations.
From the side of the organ of vision: infrequently - visual impairment.
From the organ of hearing and labyrinthine disorders: infrequently - hearing loss, vertigo; unknown frequency - hearing impairment up to deafness and/or tinnitus.
From the cardiovascular system: infrequently - palpitations, flushing of the face; unknown frequency - decreased blood pressure, increased QT interval on ECG, ari, ventricular tachycardia.
From the respiratory system: infrequently - shortness of breath, nosebleeds.
From the digestive system: very often - diarrhea; often - nausea, vomiting, abdominal pain; uncommon - flatulence, dyspepsia, constipation, gastritis, dysphagia, bloating, dry oral mucosa, belching, ulcers of the oral mucosa, increased secretion of the salivary glands; very rarely - change in tongue color, pancreatitis.
From the liver and biliary tract: infrequently - hepatitis; rarely - impaired liver function, cholestatic jaundice; unknown frequency - liver failure (in rare cases with death, mainly due to severe liver dysfunction), liver necrosis, fulminant hepatitis.
From the skin and subcutaneous tissues: uncommon - skin rash, itching, urticaria, dermatitis, dry skin, sweating; rarely - photosensitivity reaction; unknown frequency - Stevens-Johnson syndrome, toxic epidermal necrolysis, erythema multiforme.
From the musculoskeletal system: uncommon - osteoarthritis, myalgia, back pain, neck pain; unknown frequency - arthralgia.
From the kidneys and urinary tract: infrequently - dysuria, pain in the kidney area; unknown frequency - interstitial nephritis, acute renal failure.
From the genital organs and mammary gland: infrequently - metrorrhagia, dysfunction of the testicles.
Local reactions: often - pain and inflammation at the injection site.
Other: infrequently - asthenia, malaise, feeling of fatigue, facial swelling, chest pain, fever, peripheral edema.
Laboratory data: often - a decrease in the number of lymphocytes, an increase in the number of eosinophils, an increase in the number of basophils, an increase in the number of monocytes, an increase in the number of neutrophils, a decrease in the concentration of bicarbonates in the blood plasma; infrequently - increased activity of AST, ALT, increased concentration of bilirubin in the blood plasma, increased concentration of urea in the blood plasma, increased concentration of creatinine in the blood plasma, change in the potassium content in the blood plasma, increased activity of alkaline phosphatase in the blood plasma, increased chlorine content in the blood plasma, increased blood glucose concentration, increased platelet count, increased hematocrit, increased plasma bicarbonate concentration, change in plasma sodium content.
Drug interactions
Simultaneous use of macrolide antibiotics, incl. azithromycin, with P-glycoprotein substrates such as digoxin, leads to increased concentrations of P-glycoprotein substrate in the blood serum. With the simultaneous use of digoxin or digitoxin with azithromycin, a significant increase in the concentration of cardiac glycosides in the blood plasma and the risk of developing glycoside intoxication are possible.
Concomitant use of azithromycin (single dose of 1000 mg and multiple doses of 1200 mg or 600 mg has a slight effect on pharmacokinetics, including renal excretion of zidovudine or its glucuronide metabolite. However, the use of azithromycin caused an increase in the concentration of phosphorylated zidovudine, a clinically active metabolite in peripheral mononuclear cells blood The clinical significance of this fact is unclear.
With simultaneous use of azithromycin with warfarin, cases of increased effects of the latter have been described.
Azithromycin interacts weakly with isoenzymes of the cytochrome P450 system.
Given the theoretical possibility of ergotism, the simultaneous use of azithromycin with ergot alkaloid derivatives is not recommended.
Concomitant use of atorvastatin (10 mg daily) and azithromycin (500 mg daily) did not cause changes in atorvastatin plasma concentrations (based on an HMC-CoA reductase inhibition assay). However, in the post-marketing period, isolated case reports of rhabdomyolysis have been received in patients receiving concomitant azithromycin and statins.
It has been found that the simultaneous use of terfenadine and macrolides can cause arrhythmia and prolongation of the QT interval.
When used simultaneously with disopyramide, a case of the development of ventricular fibrillation has been described.
When used simultaneously with lovastatin, cases of rhabdomyolysis have been described.
When used simultaneously with rifabutin, the risk of developing neutropenia and leukopenia increases.
With simultaneous use, the metabolism of cyclosporine is disrupted, which increases the risk of developing side and toxic reactions caused by cyclosporine.
