Qi Mai Xing
Qi Mai Xing Uses, Dosage, Side Effects, Food Interaction and all others data.
Qi Mai Xing is an azalide antibiotic, a subclass of macrolide antibiotic. It acts by binding to the 50s ribosomal subunit of susceptible microorganisms and thus interfering with microbial protein synthesis. Qi Mai Xing has been shown to be active against most strains in the following microorganisms, both In vitro and in clinical infections:
Gram-positive microorganisms: Staphylococcus aureus, Streptococcus agalactiae, Streptococcus pneumoniae, Streptococcus pyogenes.
Gram-negative microorganisms: Haemophilus ducreyi, Haemophilus influenzae, Moraxella catarrhalis, Neisseria gonorrhoeae, Escherichia coli.
Other microorganisms: Chlamydia pneumoniae, Chlamydia trachomatis, Mycoplasma pneumoniae, Bacteroides fragilis, Legionella pneumophila, oxoplasma gondii.
Macrolides stop bacterial growth by inhibiting protein synthesis and translation, treating bacterial infections .Qi Mai Xing has additional immunomodulatory effects and has been used in chronic respiratory inflammatory diseases for this purpose .
Trade Name | Qi Mai Xing |
Availability | Prescription only |
Generic | Azithromycin |
Azithromycin Other Names | Azithromycin, Azithromycine, Azithromycinum, Azitromicina |
Related Drugs | amoxicillin, prednisone, albuterol, doxycycline, ciprofloxacin, cephalexin, metronidazole, clindamycin, ceftriaxone, levofloxacin |
Type | |
Formula | C38H72N2O12 |
Weight | Average: 748.9845 Monoisotopic: 748.508525778 |
Protein binding | The serum protein binding of azithromycin varies in humans, decreasing from 51% at 0.02 g/mL to 7% at 2 g/mL . |
Groups | Approved |
Therapeutic Class | Macrolides |
Manufacturer | |
Available Country | China |
Last Updated: | September 19, 2023 at 7:00 am |
Uses
Qi Mai Xing is used for infections caused by susceptible organisms in-
Upper respiratory tract infections including sinusitis, pharyngitis and tonsillitis
Lower respiratory tract infections including bronchitis, acute bacterial exacerbations of chronic obstructive pulmonary
disease (COPD)
Otitis media
Skin and soft tissue infections including cellulitis, pyoderma, erysipelas, wound infections
Diarrhea, Shigellosis
Sexually transmitted diseases, especially in the treatment of non-gonococcal urethritis and cervicitis due to Chlamydia trachomatis
Genital ulcer disease in men due to Haemophilus ducreyi (chancroid)
Mild or moderate typhoid due to multiple-antibacterial resistant organisms
Prophylaxis against a-hemolytic (viridans group) streptococcal bacterial endocarditis
Other infections including odontogenic infections, bartonella infections, toxoplasmosis, babesiosis
Qi Mai Xing is also used to associated treatment for these conditions: Acute Bacterial Sinusitis (ABS), Acute Otitis Media, Acute bacterial exacerbation of COPD caused by Haemophilus Influenza Infections, Moraxella Catarrhalis Infection, Streptococcus Pneumoniae Infections, Bacterial Conjunctivitis, Bacterial Sinusitis, Cervicitis, Chancroid, Community Acquired Pneumonia (CAP), Genital Ulcer Disease (GUD), Pelvic Inflammatory Disease (PID), Pharyngitis, Streptococcal Pharyngitis, Streptococcal tonsillitis, Tonsillitis bacterial, Traveler's Diarrhea, Uncomplicated Skin and Skin Structure Infections, Urethritis
How Qi Mai Xing works
In order to replicate, bacteria require a specific process of protein synthesis, enabled by ribosomal proteins . Qi Mai Xing binds to the 23S rRNA of the bacterial 50S ribosomal subunit. It stops bacterial protein synthesis by inhibiting the transpeptidation/translocation step of protein synthesis and by inhibiting the assembly of the 50S ribosomal subunit , . This results in the control of various bacterial infections , . The strong affinity of macrolides, including azithromycin, for bacterial ribosomes, is consistent with their broad‐spectrum antibacterial activities .
Qi Mai Xing is highly stable at a low pH, giving it a longer serum half-life and increasing its concentrations in tissues compared to erythromycin .
Dosage
Qi Mai Xing dosage
Qi Mai Xing tablet can be taken with or without food. Qi Mai Xing suspension should be taken at least 1 hour before or 2 hours after meal.
Oral:
Adult:
For respiratory tract infections, otitis media and skin & soft tissue infections: 500 mg once daily for 3 days or an alternative to this as 500 mg once on day 1, followed by 250 mg once daily for next 4 days. For sexually transmitted diseases like genital ulcer, non-gonococcal urethritis and cervicitis due to Chlamydia trachomatis : a single 1 gm (1000 mg) dose. For the treatment of urethritis and cervicitis due to Neisseria gonorrhoeae : a single 2 gm (2000 mg) dose. In typhoid, 500 mg once daily for 7 days. In Cholera, a single 1 gm (1000 mg) dose. In Shigellosis, 500 mg once on day 1, followed by 250 mg once daily for next 4 days.
Qi Mai Xing can be taken with or without food.
To reconstitute Qi Mai Xing 15 ml powder for suspension: Add 10 ml or 2 tea spoonfuls of just boiled and cooled water to the content of the bottle and shake well to mix uniformly.
To reconstitute Qi Mai Xing 30 ml powder for suspension: Add 20 ml or 4 tea spoonfuls of just boiled and cooled water to the content of the bottle and shake well to mix uniformly.
To reconstitute Qi Mai Xing 50 ml powder for suspension: Add 35 ml or 7 tea spoonfuls of just boiled and cooled water to the content of the bottle and shake well to mix uniformly.
Side Effects
Qi Mai Xing is well tolerated with a low incidence of side efects. The side effects include nausea, vomiting, abdominal discomfort (pain/cramps), flatulence, diarrhea, headache, dizziness, and skin rashes and are reversible upon discontinuation of therapy. Reversible elevations in liver transaminases have been observed occasionally. Transient mild reductions in neutrophil counts have occasionally been observed in clinical trials, although causal relationship to Qi Mai Xing has not been established.
Toxicity
Rat Oral LD50: >2000 mk/kg
Possible major adverse effects include cardiovascular arrhythmias and hearing loss. Macrolide resistance is also an ongoing issue. Hepatotoxicity has been observed in rare cases.
A note on the risk of liver toxicity:
Due to the act that azithromycin is mainly eliminated by the liver, caution should be observed when azithromycin is given to patients with decreased hepatic function .
A note on potential renal toxicity:
Because limited data in patients with renal GFR Label.
Use in Pregnancy:
This drug is categorized as a pregnancy category B drug. Reproduction studies have been done in rats and mice at doses up to moderately maternally toxic doses (for example, 200 mg/kg/day). These doses, based on a mg/m2 basis, are approximately 4 and 2 times, respectively, the human daily dose of 500 mg. In the animal studies, no harmful effects to the fetus due to azithromycin were observed. There are, at this time, no conclusive and well-controlled studies that have been done in pregnant women. Because animal reproduction studies do not always predict human response, azithromycin should be used during pregnancy only if clearly needed .
Nursing Mothers:
It is unknown at this time whether azithromycin is excreted in human milk. Because many other drugs are excreted in human milk, caution should be observed when azithromycin is given to a nursing woman .
Carcinogenesis, Mutagenesis, Impairment of Fertility:
Long-term studies in animals have not been performed to study carcinogenic potential. Qi Mai Xing has demonstrated no potential to be mutagenic in standard laboratory tests. No evidence of negative effects on fertility due to azithromycin was found .
Precaution
As with any antibiotic, observation for signs of super infection with non-susceptable organisms, including fungi, is recommended. Precaution should be taken in patients with more severe renal impairment.
Interaction
Antacids: Peak serum levels but not the total extent of absorption are reduced by aluminium and magnesium containing antacids in the stomach. Qi Mai Xing should therefore be taken at least 1 hour before or 2 hours after taking these antacids.
Ergot Derivatives: Because of the theoretical possibility of ergotism, concomitant administration of ergot derivatives and Qi Mai Xing should be avoided. Digoxin & Cyclosporin: Macrolides have been known to increase the plasma concentration of Digoxin & Cyclosporin and so caution should be exercised while co-administration is necessary.
Anti-Histamines: A potentially life threatening interaction between erythromycin and terfenadine or astemizole have been reported. Although such an interaction with Qi Mai Xing is not established yet, it is wise to avoid concomitant use of Qi Mai Xing and terfenadine or astemizole.
Food Interaction
- Take on an empty stomach. Take at least 1 hour before or 2 hours after meals.
Qi Mai Xing Drug Interaction
Moderate: albuterol, albuterolUnknown: diphenhydramine, diphenhydramine, fluticasone nasal, fluticasone nasal, guaifenesin, guaifenesin, montelukast, montelukast, acetaminophen, acetaminophen, cyanocobalamin, cyanocobalamin, ascorbic acid, ascorbic acid, cholecalciferol, cholecalciferol, cetirizine, cetirizine
Qi Mai Xing Disease Interaction
Major: colitis, QT prolongationModerate: liver disease, myasthenia gravis
Volume of Distribution
After oral administration, azithromycin is widely distributed in tissues with an apparent steady-state volume of distribution of 31.1 L/kg . Significantly greater azithromycin concentrations have been measured in the tissues rather than in plasma or serum , . The lung, tonsils and prostate are organs have shown a particularly high rate of azithromycin uptake .
This drug is concentrated within macrophages and polymorphonucleocytes, allowing for effective activity against Chlamydia trachomatis . In addition, azithromycin is found to be concentrated in phagocytes and fibroblasts, shown by in vitro incubation techniques. In vivo studies demonstrate that concentration in phagocytes may contribute to azithromycin distribution to inflamed tissues .
Elimination Route
Bioavailability of azithromycin is 37% following oral administration. Absorption is not affected by food. Macrolide absorption in the intestines is believed to be mediated by P-glycoprotein (ABCB1) efflux transporters, which are known to be encoded by the ABCB1 gene .
Half Life
Terminal elimination half-life: 68 hours
Clearance
Mean apparent plasma cl=630 mL/min (following single 500 mg oral and i.v. dose)
Elimination Route
Biliary excretion of azithromycin, primarily as unchanged drug, is a major route of elimination. Over a 1 week period, approximately 6% of the administered dose is found as unchanged drug in urine .
Pregnancy & Breastfeeding use
Pregnancy: US FDA pregnancy category B. In the animal studies, no evidence of harm to the fetus due to Qi Mai Xing was found. Because animal reproduction studies are not always predictive of human response, Qi Mai Xing should be used during pregnancy only if clearly needed.
Lactation: It is not known whether Qi Mai Xing is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when Qi Mai Xing is administered to nursing mother.
Contraindication
Qi Mai Xing is contraindicated in patients hypersensitive to Qi Mai Xing or any other macrolide antibiotic. Co-administration of ergot derivatives and Qi Mai Xing is contraindicated. Qi Mai Xing is contraindicated in patients with hepatic diseases.
Special Warning
Pediatric Use: Qi Mai Xing oral dosage forms can be administered to pediatric patients from 6 months of age. Safety and effectiveness of azithromycin for injection in children or adolescents under 16 years have not been established.
Acute Overdose
There are no data available on overdose with Qi Mai Xing. Typical symptoms of overdosage with macrolide antibiotics include hearing loss, severe nausea, vomiting and diarrhoea. Gastric lavage and general supportive measures are indicated.
Interaction with other Medicine
Peak serum levels but not the total extent of absorption were reduced by the presence of magnesium and aluminum-containing antacids. Qi Mai Xing should be taken at least 1 hr before or 2 hrs after these antacids. In patients receiving ergot alkaloids, Qi Mai Xing should be avoided concurrently because of the possibilty of ergotism result in from interaction of Qi Mai Xing with the cytochrome P-450 system However, no cases of such interaction have been reported. Macrolides have been known to increase the plasma concentration of digoxin and cyclosporine. Therefore, if co-administration is necessary caution should be exercised and serum levels of digoxin and cyclosporine should be checked. There have been no pharmacokinetic drug interactions between Qi Mai Xing and warfarin, theophylline, carbamazepine, methylprednisolone and cimetidine.
Storage Condition
Qi Mai Xing IV infusion: When diluted according to the instructions, azithromycin for injection is stable for 24 hours at or below room temperature 30° C, or for 7 days if stored under refrigeration 5° C.
Qi Mai Xing capsule, tablet and dry powder for suspension: should be stored at room temperature (below 30° C). Any unused portion of reconstituted Qi Mai Xing suspension should be discarded after 5 days.
Qi Mai Xing eye drops: Store unopened bottle under refrigeration at 2°C to 8°C. Once the bottle is opened, store at 2°C to 25°C for up to 14 days. Discard after the 14 days.
Innovators Monograph
You find simplified version here Qi Mai Xing
Qi Mai Xing contains Azithromycin see full prescribing information from innovator Qi Mai Xing Monograph, Qi Mai Xing MSDS, Qi Mai Xing FDA label
FAQ
What is Qi Mai Xing used to treat?
Qi Mai Xing is an antibiotic. It's widely used to treat chest infections such as pneumonia, infections of the nose and throat such as sinus infection (sinusitis), skin infections, Lyme disease, and some sexually transmitted infections.
Is Qi Mai Xing a steroid or antibiotic?
Qi Mai Xing is an antibiotic medication used for the treatment of a number of bacterial infections.
What is the side effect of Qi Mai Xing?
Stomach upset, diarrhea/loose stools, nausea, vomiting, or abdominal pain may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
How quickly does Qi Mai Xing work?
Qi Mai Xing typically takes at least five days to fully work, but it can start to relieve your sore throat and other symptoms on the first day you take it. If your doctor prescribes a generic version of Qi Mai Xing, your treatment may only last three days.
Who should not take Qi Mai Xing?
The following conditions are contraindicated with this drug. Check with your physician if you have any of the following:
Conditions:
- diarrhea from an infection with Clostridium difficile bacteria
- low amount of magnesium in the blood
- low amount of potassium in the blood
- myasthenia gravis, a skeletal muscle disorder
- hearing loss
- torsades de pointes, a type of abnormal heart rhythm
- slow heartbeat
- prolonged QT interval on EKG
- abnormal EKG with QT changes from birth
- a narrowing of the opening between the stomach and the small intestine
- liver problems
- abnormal liver function tests
- inflammation of the liver with stoppage of bile flow
- a yellowing of the eyes or skin from buildup of bilirubin called jaundice
Does Qi Mai Xing kill gut bacteria?
Like all broad-spectrum antibiotics, Qi Mai Xing does not discriminate between pathogenic bacteria and healthy bacteria. Hence, when you take antibiotics to fight an infection, many of the bacteria in your gut are killed too (think of it as collateral damage).
Does Qi Mai Xing make me tired?
Qi Mai Xing oral tablet doesn't cause drowsiness, but it can cause other side effects.
How safe is Qi Mai Xing?
The U.S. Food and Drug Administration (FDA) is warning the public that azithromycin (Zithromax or Zmax) can cause abnormal changes in the electrical activity of the heart that may lead to a potentially fatal irregular heart rhythm. source
Can Qi Mai Xing treat cold?
Qi Mai Xing is used to treat a wide variety of bacterial infections. It is a macrolide-type antibiotic. It works by stopping the growth of bacteria. This medication will not work for viral infections (such as common cold, flu).
Can I take Qi Mai Xing during pregnancy?
The safety of Qi Mai Xing during pregnancy is yet to establish. Qi Mai Xing is not recommendable in pregnancy. Ask your doctor before taking this medicine.
Can I take Qi Mai Xing while breastfeeding?
Qi Mai Xing partially passes into human breast milk. If you are taking Qi Mai Xing then stop breastfeeding your baby. It is advised to discard the milk during treatment and until two days after discontinuation of treatment. You can restart breastfeeding thereafter.
Can I drive if I have consumed Qi Mai Xing?
You may drive, but be sure you are not experiencing dizziness before you start driving.
How Does Qi Mai Xing Work?
Qi Mai Xing prevents the growth of bacteria by interfering with their protein synthesis. It binds to a specific part of the bacterial nucleus and inhibits the process required for bacterial growth. Thereby, bacteria are killed, or their growth is stalled depending on the organism and the medicine concentration.