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NANZISPORIN Sprinkling Powder 10gm
NEOSPORIN ANTIBIOTIC Ointment 10gm
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CHLORCOM DX Eye Ointment 5g
Polymyxin B: Targeted Bacterial Care Wishlist Antibiotic Next in its Line of Specialists
Polymyxin B is the specialist antibiotic known as polypeptide and is designed to treat severe infections caused by Gram-negative bacteria, particular those which have become resistant to more common antibiotics. Due to its great potency, Polymyxin B is often conceived as the “reserve” drug for complex systemic or local infections.
Key Therapeutic Use
Abscess: To be used for extremely severe intrabdominal infections.
Pseudomonal Bacteremias: It is effective against P. aeruginosa septicemia.
In Meningitis: This drug is effective either alone or in the combination of other antibacterials for the treatment of meningitis.
UTI: The drug is indicated for treatment of infections where sensitivity to other alternative agents has been demonstrated otherwise.
Vaycin/Colsus: Employed by the route of topical application for minor wounds and infections in skin and in burns.
How Polymyxin B Acts
Polymyxin B is a very targeted antibiotic. It works by binding to the outer envelope of the bacteria and thereby disturbing its structure. This results in the leakage of intracellular content, which finally kills bacteria in a relatively short time. It works only against Gram-negative bacteria membrane while behaving in mum against the two widely distributed layers of the Gram-negative bacteria and cell wall.
Administration & Usage
Multiple administration forms are generally available: injection, eye and ear drops, and topical ointment.
Hospital Monitoring: In the hospital, injectable dosage forms need to be given under supervision while patient monitoring is going on, as mentioned in the drug insert.
Required Completion: There is no way of enhancing the destruction of the innermost bacterial membrane without the user’s keen compliance with the course. It is very necessary to finish in any quantity initially prescribed even if symptoms have started to stabilize.
Keep Urine Output above Normal: If you are on the injectable version, be sure to take plenty of fluids. It is essential to keep good urine output should kidney-saving needs arise with long-term use.
Safety & Side Effects
Polymyxin B is a very potent drug that may require close monitoring by a doctor, particularly when used on injections.
Common Adverse Reactions
CategorySymptomsManagement Strategies
Kidney FunctionChanges in urine output (amount or color)The levels of “BUN” and “Creatinine” will be monitored by your doctor.
Neurologic EffectsDizziness, tingling hands or feet, and blurred visionAlert your care provider if any “pins and needles” sensation is experienced.
Injection SiteRedness, pain, or swelling
Allergic ReactionsSkin rash or hives or itchingGet immediate attention for signs of difficult breathing or swelling of the face.
Polymyxin B FAQ
Q: Can I get Polymyxin B for the common cold?
A: No. Polymyxin B is an antibiotic meant only to kill bacteria. Therefore, it is not effective against viruses that cause colds, flu, or most sore throats.
Q: Can I keep Polymyxin B eye drops on while wearing contacts?
A: It is hardly ideal. Most often, doctors recommend stopping contact lenses at the onset of an eye-related infection. Reinsert these lenses only after the infection is effectively cured and the doctor has reiterated through Home Monitor green.
Q: Why do we see the combination of Polymyxin B with other antibiotics?
A: You may see them combined with drugs like Neomycin or Bacitracin. This choice of having a “triple antibiotic” preparation helps address a broad range of both Gram-positive and Gram-negative mechanisms of action.
Q: How about telling my healthcare provider before taking the injection?
B: You need to ask politely against any cases of kidney disease, myasthenia gravis, or if you have had anesthesia or taken muscle relaxants recently, as these aforementioned conditioners and treatments can interact with Polymyxin B.
Q: Is Polymyxin B safe during pregnancy or breastfeeding?
A: It is generally safe to use Polymyxin B in pregnancy only if the benefits of treatment outweigh its risk to the fetus. In such cases, only an obstetrician can determine the trade-off.
Important Precautions
Drug Interactions: Special care has to be taken to eliminate nephrotoxic medications such as Gentamicin and Amikacin from administration with Polymyxin B, unless a specialist with the required understanding has instructed otherwise.
Hearing and Balance: There have been rare reports of overdose impairing balance. Warn your provider of dizziness or ringing in the ears.
