Timoxi

Ukraine
Brand name Timoxi
Form tablets, film-coated
Active substance / Dosage
moxifloxacin · 400 mg
Prescription type prescription only
ATC code
Registration number UA/17582/01/01
Timoxi tablets, film-coated

Table of Contents

INSTRUCTION FOR MEDICAL USE OF THE MEDICINAL PRODUCT Tymoxy® (Tymoxy®) Composition: Active ingredient: moxifloxacin; 1 film-coated tablet contains 400 mg moxifloxacin (as moxifloxacin hydrochloride); Excipients: Tablet core: microcrystalline cellulose, partially pregelatinized corn starch, low-substituted hydroxypropylcellulose, sodium lauryl sulfate, sodium stearyl fumarate; Coating: Opadry II Orange [polyvinyl alcohol; titanium dioxide (E 171); polyethylene glycol; talc; sunset yellow color (E 110)]. Pharmaceutical form. Film-coated tablets. Main physicochemical properties: elongated biconvex film-coated tablets, light orange in color with a score on one side. The score is not intended for dividing the tablet in half. Pharmacotherapeutic group. Antimicrobial agents for systemic use. Antibacterials of the quinolone group. ATC code J01MA14. Pharmacological properties. Pharmacodynamics. Mechanism of action Moxifloxacin is an 8-methoxyfluoroquinolone agent with a broad spectrum of bactericidal activity. In vitro, moxifloxacin is effective against many Gram-positive and Gram-negative microorganisms. Moxifloxacin has been shown to be effective against bacteria resistant to β-lactam and macrolide agents. The bactericidal activity of moxifloxacin is due to inhibition of both types of type II topoisomerases (DNA gyrase and topoisomerase IV), which are essential for replication, transcription, and repair of bacterial DNA. The C8-methoxy substituent is believed to enhance activity and reduce selection of resistant mutants in Gram-positive bacteria compared to C8-H substituent. The presence of a large dicycloamine substituent at the C-7 position prevents active efflux mediated by norA or pmrA genes found in some Gram-positive bacteria. Moxifloxacin exhibits concentration-dependent bactericidal activity. Minimum bactericidal concentrations (MBC) are usually equivalent to minimum inhibitory concentrations (MIC). Effect on intestinal flora in humans The following changes in intestinal flora were observed in volunteers after oral administration of moxifloxacin: reduction in E. coli, Bacillus spp., Enterococcus, and Klebsiella spp., as well as anaerobes Bacteroides vulgatus, Bifidobacterium spp., Eubacterium, and Peptostreptococcus. An increase in Bacteroides fragilis was observed. The numbers of the above-mentioned microorganisms returned to normal within two weeks. Resistance Mechanisms of resistance that inactivate penicillins, cephalosporins, aminoglycosides, macrolides, and tetracyclines do not affect the antibacterial efficacy of moxifloxacin. Other resistance mechanisms, such as permeability barriers (common in Pseudomonas aeruginosa) and efflux mechanisms, may affect susceptibility to moxifloxacin. Development of resistance to moxifloxacin in vitro has been observed as a gradual process involving point mutations in both type II topoisomerases, DNA gyrase and topoisomerase IV. Moxifloxacin is a weak substrate for active efflux mechanisms in Gram-positive microorganisms. Cross-resistance with other fluoroquinolones occurs. However, since moxifloxacin inhibits both type II topoisomerases (DNA gyrase and topoisomerase IV) with similar potency in certain Gram-positive bacteria, these bacteria may be resistant to other quinolones but remain susceptible to moxifloxacin. Breakpoints Clinical MIC and disk diffusion breakpoints for moxifloxacin (01.01.2012) according to EUCAST (European Committee on Antimicrobial Susceptibility Testing) Table 1

Microorganism

Susceptible

Resistant

Staphylococcus spp.

≤ 0.5 mg/l
≥ 24 mm

> 1 mg/l
< 21 mm

S. pneumoniae

≤ 0.5 mg/l
≥ 22 mm

> 0.5 mg/l
< 22 mm

Streptococcus, groups A, B, C, G

≤ 0.5 mg/l
≥ 18 mm

> 1 mg/l
< 15 mm

H. influenzae

≤ 0.5 mg/l
≥ 25 mm

> 0.5 mg/l
< 25 mm

M. catarrhalis

≤ 0.5 mg/l
≥ 23 mm

> 0.5 mg/l
< 23 mm

Enterobacteriaceae

≤ 0.5 mg/l
≥ 20 mm

> 1 mg/l
< 17 mm

Species-unrelated breakpoints*

≤ 0.5 mg/l

> 1 mg/l

* Species-unspecific breakpoints were established primarily based on pharmacokinetic/pharmacodynamic data and do not depend on the MIC distribution of specific species. These data are used only for species for which no species-specific breakpoints have been defined, and are not used for species for which interpretive criteria are to be determined.

Microbiological susceptibility
The frequency of acquired resistance may vary depending on geographical location, region, and over time for specific microorganisms. It is desirable to have access to local information on microbial resistance, especially when treating severe infections. Consultation with an expert in antimicrobial resistance should be sought if local resistance prevalence is so high that the efficacy of a particular medicinal product against certain infectious agents becomes questionable.

Susceptible species
Aerobic Gram-positive microorganisms
Gardnerella vaginalis
Staphylococcus aureus* (methicillin-susceptible)
Streptococcus agalactiae (Group B)
Streptococcus milleri group* (S. anginosus, S. constellatus, and S. intermedius)
Streptococcus pneumoniae*
Streptococcus pyogenes* (Group A)
Streptococcus viridans group (S. viridans, S. mutans, S. mitis, S. sanguinis, S. salivarius, S. thermophilus)

Aerobic Gram-negative microorganisms
Acinetobacter baumannii
Haemophilus influenzae*
Haemophilus parainfluenzae*
Legionella pneumophila
Moraxella (Branhamella) catarrhalis*

Annaerobic microorganisms
Fusobacterium spp.
Prevotella spp.

Other microorganisms
Chlamydophila (Chlamydia) pneumoniae*
Chlamydia trachomatis*
Coxiella burnetii
Mycoplasma genitalium
Mycoplasma hominis
Mycoplasma pneumoniae*

Species with possible acquired resistance
Aerobic Gram-positive microorganisms
Enterococcus faecalis*
Enterococcus faecium*
Staphylococcus aureus (methicillin-resistant)+

Aerobic Gram-negative microorganisms
Enterobacter cloacae*
Escherichia coli*#
Klebsiella pneumoniae*#
Klebsiella oxytoca
Neisseria gonorrhoeae*+
Proteus mirabilis*

Annaerobic microorganisms
Bacteroides fragilis*
Peptostreptococcus spp.*

Resistant species
Aerobic Gram-negative microorganisms
Pseudomonas aeruginosa

* Demonstrated adequate activity against susceptible strains in clinical trials within approved clinical indications.
#Strains producing extended-spectrum beta-lactamases (ESBL) are usually resistant to fluoroquinolones.
+Resistance rate > 50% in one or more countries.

Safety data
Effects on the hematopoietic system (mild reduction in erythrocyte and platelet counts) were observed in rats and monkeys. As with other quinolones, hepatotoxicity (elevated liver enzymes and vacuolar degeneration) was noted in rats, monkeys, and dogs. Neurotoxicity (CNS effects – seizures) was observed in monkeys. These effects were observed only after administration of high doses of moxifloxacin or prolonged treatment.

Moxifloxacin, like other quinolones, showed genotoxicity in in vitro tests with bacteria or mammalian cells. Since this effect is explained by interaction with bacterial gyrase and, at higher concentrations, with topoisomerase II in mammalian cells, a threshold concentration for genotoxicity can be assumed. In vivo tests showed no signs of genotoxicity despite administration of high doses of moxifloxacin. Thus, the drug demonstrated sufficient safety potential when used at therapeutic doses for humans.

Moxifloxacin did not show carcinogenic effects in studies conducted in rats. Many quinolones are photoreactive and may provoke phototoxic reactions, as well as exhibit photomutagenic and photocarcinogenic effects. However, data from comprehensive in vitro and in vivo testing programs indicate the absence of phototoxic and photogenotoxic properties of moxifloxacin. Under the same conditions, other quinolones demonstrated these effects.

At high concentrations, moxifloxacin acts as an inhibitor of the rapid component of the cardiac delayed rectifier potassium current and may therefore lead to QT interval prolongation. Toxicological studies in dogs, in which the drug was administered orally at doses ≥ 90 mg/kg, resulting in plasma concentrations ≥ 16 mg/L, revealed QT interval prolongation without arrhythmias. Reversible non-lethal ventricular arrhythmia was observed only after intravenous administration of a high cumulative dose more than 50 times higher than the human dose (> 300 mg/kg), resulting in plasma concentrations ≥ 200 mg/L (more than 40 times higher than the therapeutic level).

It is known that quinolones cause cartilage damage in large diarthrodial joints in young animals. The lowest oral dose of moxifloxacin causing arthrototoxic effects in young dogs was four times higher than the maximum recommended therapeutic dose of 400 mg (for a 50 kg body weight), calculated based on dose/body weight ratio (mg/kg), and resulted in plasma concentrations two to three times higher than those expected with maximum therapeutic dosing.

Toxicity studies in rats and monkeys (repeated dosing for up to 6 months) revealed no signs of risk to the organs of vision. In studies in dogs, only high oral doses (≥ 60 mg/kg) resulting in plasma concentrations ≥ 20 mg/L caused changes in electroretinograms and, in individual cases, retinal atrophy.

Studies on the effect of moxifloxacin on animal reproductive function have demonstrated that moxifloxacin crosses the placenta. Studies in rats (with oral and intravenous administration of moxifloxacin) and monkeys (with oral administration of moxifloxacin) showed no teratogenic effects of moxifloxacin or effects on fertility. Intravenous administration of moxifloxacin at 20 mg/kg in rabbits resulted in skeletal malformations. An increased incidence of abortions was observed in monkeys and rabbits at therapeutic doses of moxifloxacin. In rats, reduced fetal weight, increased incidence of abortions, slight prolongation of gestation period, and increased spontaneous activity in offspring were observed at doses 63 times higher than the recommended dose.

Pharmacokinetics
Absorption and bioavailability
After oral administration, moxifloxacin is rapidly and almost completely absorbed. Absolute bioavailability reaches approximately 91%. Within the dose range of 50 to 800 mg after single administration and at a dose of 600 mg daily for 10 days, pharmacokinetics are linear. After oral administration of a 400 mg dose, peak plasma concentration is reached within 0.5–4 hours and amounts to 3.1 mg/L. Maximum and minimum plasma concentrations at steady state (400 mg once daily) are 3.2 and 0.6 mg/L, respectively. At steady state, exposure over the dosing interval is approximately 30% higher than after the first dose.

Distribution
Moxifloxacin rapidly distributes into the extravascular space. After administration of a 400 mg dose, AUC is 35 µg·h/mL. The volume of distribution at steady state is 2 L/kg. As determined in in vitro and ex vivo experiments, plasma protein binding is approximately 40–42% and is independent of drug concentration.

Peak concentration (geometric mean) after single oral administration of 400 mg moxifloxacin:
Table 2

Tissue

Concentration

Local level – plasma level

Plasma

3.1 mg/L

-

Saliva

3.6 mg/L

0.75–1.3

Bladder contents

1.61 mg/L

1.71

Bronchial mucosa

5.4 mg/kg

1.7–2.1

Alveolar macrophages

56.7 mg/kg

18.6–70.0

Epithelial lining fluid

20.7 mg/L

5–7

Maxillary sinus

7.5 mg/kg

2.0

Ethmoid sinuses

8.2 mg/kg

2.1

Nasal polyps

9.1 mg/kg

2.6

Interstitial fluid

1.02 mg/L

0.8–1.42,3

Female genital organs*

10.24 mg/kg

1.724

  • Acute bacterial sinusitis (diagnosed with high probability).
  • Acute exacerbation of chronic obstructive pulmonary disease, including bronchitis (diagnosed with high probability).
  • Community-acquired pneumonia, excluding severe community-acquired pneumonia.
  • Moderate to severe pelvic inflammatory disease (including infection of the upper genital tract in women, such as salpingitis and endometritis), not associated with tubo-ovarian abscess or pelvic abscesses. The drug Timoxi is not recommended for use as monotherapy for moderate to severe pelvic inflammatory disease, but it may be used in combination with other appropriate antibacterial agents (e.g., cephalosporins) due to increasing resistance of moxifloxacin to Neisseria gonorrhoeae (except for moxifloxacin-resistant strains of N. gonorrhoeae) (see sections "Pharmacological properties", "Special precautions for use").

Timoxi may be used to complete a course of treatment where initial therapy with intravenous moxifloxacin was effective and indicated for the following conditions:

  • community-acquired pneumonia;
  • complicated skin and soft tissue infections.
  • Known hypersensitivity to moxifloxacin or to other quinolones or to any of the excipients of the drug.
  • Age under 18 years.
  • Pregnancy or breastfeeding (see section "Use during pregnancy or breastfeeding").
  • Patients with a history of tendon disorders related to quinolone therapy.

During preclinical and clinical studies, changes in cardiac electrophysiology, such as QT interval prolongation, were observed after administration of moxifloxacin. Therefore, for safety reasons, the drug is contraindicated in patients with:

  • congenital or diagnosed acquired QT interval prolongation;
  • electrolyte imbalances, particularly uncorrected hypokalemia;
  • clinically significant bradycardia;
  • clinically significant heart failure with reduced left ventricular ejection fraction;
  • history of symptomatic arrhythmias.

The drug should not be used concomitantly with other drugs that prolong the QT interval (see section "Interaction with other medicinal products and other types of interactions"). Due to limited clinical data on drug use, the drug is also contraindicated in patients with hepatic impairment (Child-Pugh class C) and in patients with elevated transaminase levels (more than 5 times the upper limit of normal). Interaction with other medicinal products and other types of interactions. An additive effect of moxifloxacin and other medicinal products that may cause QT interval prolongation cannot be excluded. This interaction may lead to an increased risk of ventricular arrhythmias, including torsade de pointes. For this reason, the use of moxifloxacin in combination with any of the following medicinal products is contraindicated (see also section "Contraindications"):

  • Class IA antiarrhythmic agents (e.g., quinidine, hydroquinidine, disopyramide);
  • Class III antiarrhythmic agents (e.g., amiodarone, sotalol, dofetilide, ibutilide);
  • antipsychotic agents (e.g., phenothiazines, pimozide, sertindole, haloperidol, sulpiride);
  • tricyclic antidepressants;
  • certain antimicrobial agents (saquinavir, sparfloxacin, intravenous erythromycin, pentamidine, antimalarial agents including halofantrine);
  • certain antihistamines (terfenadine, astemizole, mizolastine);
  • others (cisapride, vinca alkaloids IV, bepridil, difemelane).
  • for both aortic aneurysm and dissection and cardiac valve regurgitation/insufficiency (e.g., connective tissue disorders such as Marfan syndrome or Ehlers-Danlos syndrome, Turner syndrome, Behçet's disease, hypertension, rheumatoid arthritis) or additionally

  • for aortic aneurysm and dissection (e.g., vascular disorders such as Takayasu arteritis or giant cell arteritis, or known atherosclerosis, or Sjögren's syndrome) or additionally

  • for cardiac valve regurgitation/insufficiency (e.g., infective endocarditis). The risk of aortic aneurysm and dissection and their rupture may be increased in patients receiving systemic corticosteroids concomitantly.

  • acute exacerbation of chronic obstructive pulmonary disease, including bronchitis – 5-10 days;
  • community-acquired pneumonia – 10 days;
  • acute bacterial sinusitis – 7 days;
  • moderate to severe pelvic inflammatory disease – 14 days.

Clinical trial data indicate that the duration of moxifloxacin (tablet) treatment was up to 14 days. Step-down therapy (intravenous administration followed by transition to oral administration) In clinical studies of sequential therapy, most patients transitioned from intravenous to oral moxifloxacin within 4 days (community-acquired pneumonia) or 6 days (complicated skin and soft tissue infections). The recommended total duration of treatment with tablets and infusion solution of moxifloxacin is 7-14 days for community-acquired pneumonia and 7-21 days for complicated skin and soft tissue infections. Exceeding the specified dose (400 mg once daily) and treatment duration for each indication is not recommended. Children. Moxifloxacin is contraindicated in children (under 18 years of age). The efficacy and safety of moxifloxacin use in children have not been established (see also section "Contraindications"). Overdose. In case of accidental overdose, no specific measures are recommended. In case of overdose, treatment should be based on clinical presentation and include symptomatic supportive therapy and ECG monitoring due to the potential for QT interval prolongation. Concomitant administration of activated charcoal with a 400 mg oral dose of moxifloxacin will reduce systemic availability of the drug by more than 80%. In case of overdose due to oral intake of the drug, administration of activated charcoal at the initial stage of absorption may be effective in preventing increased systemic effects of moxifloxacin. Adverse reactions. The adverse effects listed below were obtained from clinical trials and post-marketing reports of moxifloxacin 400 mg (oral and step-down therapy) and their frequency. All adverse reactions were observed at a frequency of less than 3%, except for nausea and diarrhea. Within each group, adverse events are listed in order of decreasing severity. Frequency is defined as follows: common (≥1/100, <1/10), uncommon (≥1/1000, <1/100), rare (≥1/10000, <1/1000), very rare (<1/10000), frequency not known. Table 3

MedDRA System Organ Classes

Common

Uncommon

Rare

Very rare

Frequency not known

Infections and infestations

Superinfection due to bacterial or fungal resistance, e.g. oral or vaginal candidiasis

Blood and lymphatic system disorders

Anaemia, leucopenia, neutropenia, thrombocytopenia, thrombocytosis, eosinophilia, prolonged prothrombin time/increased INR (international normalized ratio)

Increased prothrombin level/decreased INR,
agranulocytosis,
pancytopenia

Immune system disorders

Allergic reactions (see section "Special warnings and precautions for use")

Anaphylaxis, including rare cases of shock (life-threatening), angioedema/angioneurotic oedema, including laryngeal oedema (potentially life-threatening (see section "Special warnings and precautions for use"))

Metabolism and nutrition disorders

Hyperlipidaemia

Hyperglycaemia, hyperuricaemia

Hypoglycaemia, hypoglycaemic coma

Psychiatric disorders*

Anxiety reactions, increased psychomotor activity/agitation

Mood lability, depression (in rare cases with possible self-harm such as suicidal thoughts/ideation or suicide attempts
(see section "Special warnings and precautions for use")), hallucinations, delirium

Depersonalisation, psychotic reactions (with possible self-harm such as suicidal thoughts/ideation or suicide attempts (see section "Special warnings and precautions for use"))

Nervous system disorders*

Headache, dizziness

Paraesthesia/dysesthesia, taste disturbances (including ageusia in rare cases), confusion and disorientation, sleep disorders (mainly insomnia), tremor, vertigo, somnolence

Hypoaesthesia, olfactory disturbances (including loss of smell), pathological dreams, coordination disorders (including gait disturbance due to dizziness or vertigo), seizures with various clinical manifestations (including grand mal seizures (see section "Special warnings and precautions for use")), attention disturbances, speech disorders, amnesia, peripheral neuropathy and polyneuropathy

Hyperaesthesia

Eye disorders*

Visual disturbances, including diplopia and blurred vision (particularly during CNS reactions (see section "Special warnings and precautions for use"))

Photophobia

Transient visual loss (particularly during CNS reactions
(see sections "Special warnings and precautions for use" and "Effects on ability to drive and use machines")), uveitis and bilateral acute transient iris transillumination (see section "Special warnings and precautions for use")

Ear and labyrinth disorders*

Tinnitus, hearing disturbances including deafness (usually reversible)

Endocrine disorders

Syndrome of inappropriate antidiuretic hormone secretion (SIADH)

Cardiac disorders**

QT interval prolongation in patients with hypokalaemia (see sections "Special warnings and precautions for use" and "Contraindications")

QT interval prolongation
(see section "Special warnings and precautions for use"), palpitations, tachycardia, atrial fibrillation, angina pectoris

Ventricular tachyarrhythmias, syncope (i.e. acute and transient loss of consciousness)

Non-specific arrhythmias, torsade de pointes
(see section "Special warnings and precautions for use"), cardiac arrest (see section "Special warnings and precautions for use")

Vascular disorders**

Vasodilation

Arterial hypertension, arterial hypotension

Vasculitis

Respiratory, thoracic and mediastinal disorders

Dyspnoea (including asthmatic state)

Gastrointestinal disorders

Nausea, vomiting, abdominal pain, diarrhoea

Decreased appetite and reduced food intake, constipation, dyspepsia, flatulence, gastritis, increased amylase levels

Dysphagia, stomatitis, antibiotic-associated colitis (including pseudomembranous colitis, rarely associated with life-threatening complications (see section "Special warnings and precautions for use"))

Hepatobiliary disorders

Elevated transaminase levels

Liver function abnormalities (including elevated LDH (lactate dehydrogenase)), elevated bilirubin levels, elevated GGT (gamma-glutamyl transferase), elevated alkaline phosphatase levels in blood

Jaundice, hepatitis (predominantly cholestatic)

Fulminant hepatitis, potentially leading to life-threatening liver failure (including fatal outcomes
(see section "Special warnings and precautions for use"))

Skin and subcutaneous tissue disorders

Pruritus, rash, urticaria, dry skin

Bullous skin reactions such as Stevens-Johnson syndrome or toxic epidermal necrolysis (potentially life-threatening
(see section "Special warnings and precautions for use"))

Acute generalized exanthematous pustulosis (AGEP), drug reaction with eosinophilia and systemic symptoms (DRESS) (see section "Special warnings and precautions for use"), fixed drug eruption, photosensitivity reactions (see section "Special warnings and precautions for use")

Musculoskeletal and connective tissue disorders*

Arthralgia, myalgia

Tendinitis
(see section "Special warnings and precautions for use"), muscle twitching, muscle cramps, muscle weakness

Tendon rupture
(see section "Special warnings and precautions for use"), arthritis, muscle rigidity, exacerbation of symptoms of myasthenia gravis
(see section "Special warnings and precautions for use")

Rhabdomyolysis

Renal and urinary disorders

Dehydration

Renal function impairment (including increased blood urea nitrogen and plasma creatinine), renal failure

General disorders*

General weakness (mainly asthenia or fatigue), pain sensations (including back pain, chest pain, limb pain, pelvic pain), hyperhidrosis

Oedema