Meriflox 500mg Tablet (norfloxacin): Complete Medicine Guide

[{"condition":"Uncomplicated urinary tract infection","description":"This medicine is used to treat uncomplicated urinary tract infections caused by susceptible bacteria such as Escherichia coli, Klebsiella species, and Proteus species.","evidence":"Well-established"},{"condition":"Complicated urinary tract infection","description":"It may be used for some complicated urinary tract infections when the causative organism is known to be susceptible and other options are not suitable.","evidence":"Established"},{"condition":"Bacterial prostatitis","description":"This medicine can be used in selected cases of bacterial prostatitis caused by susceptible organisms because it penetrates prostate tissue.","evidence":"Established"},{"condition":"Gonococcal urethritis and cervicitis","description":"It has been used for gonorrhea caused by susceptible Neisseria gonorrhoeae, although resistance is now common in many regions and other agents are usually preferred.","evidence":"Limited by resistance"},{"condition":"Bacterial gastroenteritis","description":"It may be used for selected bacterial diarrheal infections caused by susceptible organisms, but it is not recommended for routine diarrhea without a confirmed bacterial cause.","evidence":"Limited"}]

Off-label uses: [{"condition":"Spontaneous bacterial peritonitis prophylaxis","description":"Sometimes used off-label in patients with cirrhosis to prevent spontaneous bacterial peritonitis, but this is not a standard approved use for this exact product.","evidence":"Limited"},{"condition":"Selective decontamination of the digestive tract","description":"Occasionally used in intensive care settings as part of selective decontamination protocols, but this is a specialized off-label use.","evidence":"Limited"}]

Primary treatment for: Uncomplicated urinary tract infection

Also treats: Complicated urinary tract infection, Bacterial prostatitis, Gonococcal urethritis and cervicitis, Selected bacterial gastroenteritis

Generic Name(s)	Norfloxacin (500mg)
Brand Name	meriflox 500mg tablet
Manufacturer	Wockhardt Ltd
Packaging / Form	Varies by brand (Allopathy)
Therapeutic Class	ANTI INFECTIVES
Action Class	Quinolones/ Fluroquinolones
Route of Administration	Oral
Storage	Store this medicine at room temperature between 15°C and 30°C in a dry place. Keep it in its original container, tightly closed, and protect it from direct sunlight and moisture. Do not store it in the bathroom.
Shelf Life	The shelf life of this medicine is typically 24 months from the date of manufacture, but the exact expiry date is printed on the pack. Do not use it after the expiry date.
WHO Guideline	Not established from the available information. Fluoroquinolones are included in some international guidelines for specific infections, but recommendations vary by region and resistance patterns. Always follow the advice of your local clinician.
ICMR Guideline	Not established from the available information. The Indian Council of Medical Research publishes antimicrobial use guidelines that may include fluoroquinolones for selected infections, but the exact recommendation depends on the current national guideline and local resistance data.

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

Drug	Severity	Effect
Tizanidine	Major
Theophylline	Major
Warfarin	Major
Antacids	Major
Iron supplements	Major
Zinc supplements	Major
Nonsteroidal anti-inflammatory drugs	Moderate
Caffeine	Moderate
Cyclosporine	Moderate
Probenecid	Moderate

🚫 Contraindications

["Known allergy or hypersensitivity to norfloxacin or any other fluoroquinolone antibiotic.","History of tendon disorders or tendon rupture associated with fluoroquinolone use.","Myasthenia gravis, because fluoroquinolones can worsen muscle weakness.","Children and adolescents during periods of rapid growth, unless specifically approved by a specialist.","Pregnancy and breastfeeding, unless the clinician determines the benefit clearly outweighs the risk.","Concurrent use with tizanidine."]

⚠️ Warnings & Precautions

["This medicine can cause tendon inflammation and rupture, especially in people over 60 years of age, those taking corticosteroids, and those with kidney, heart, or lung transplants. Stop the medicine and seek medical help if you develop tendon pain or swelling.","This medicine can cause peripheral neuropathy with numbness, tingling, burning, or weakness. Report these symptoms immediately because they may become permanent if treatment continues.","This medicine can cause central nervous system effects such as dizziness, confusion, agitation, or seizures. Avoid driving or operating machinery until you know how it affects you.","This medicine can make your skin more sensitive to sunlight. Avoid prolonged sun exposure and use protective clothing and sunscreen.","This medicine can cause serious blood sugar disturbances. Patients with diabetes should monitor their blood sugar closely.","This medicine can worsen myasthenia gravis. Patients with this condition should avoid this medicine unless no alternative is available.","This medicine should be used with caution in elderly patients and in those with kidney or liver disease.","Prolonged use of this medicine may lead to overgrowth of non-susceptible organisms, including fungi, and to Clostridioides difficile-associated diarrhea."]

🤱 Lactation Safety

This medicine passes into breast milk in small amounts. Because of the potential risk of serious side effects in a breastfed infant, breastfeeding is generally not recommended while taking this medicine unless the clinician advises otherwise. If treatment is essential, the clinician may recommend temporarily interrupting breastfeeding.

Additional Safety Advice

If you are planning to become pregnant, tell your doctor before starting this medicine. Fluoroquinolones are generally avoided during pregnancy because of concerns about cartilage and joint development in the fetus. Your doctor may choose a safer alternative antibiotic if you are pregnant or trying to conceive. Do not start or stop this medicine without medical advice.

If you have recently had surgery, tell your surgeon and anesthesiologist that you are taking this medicine. This medicine may interact with other medicines used during and after surgery, and it can rarely affect blood sugar and heart rhythm. Your surgical team will decide whether to continue, adjust, or temporarily stop this medicine around the time of your procedure.

Tell your dentist that you are taking this medicine before any dental procedure. This medicine does not usually need to be stopped for dental work, but it can interact with other medicines and can rarely cause bleeding or blood sugar changes. Your dentist may coordinate with your doctor if you need antibiotics for a dental infection, to avoid using two antibiotics that interact.

Avoid strenuous exercise and high-impact activities while taking this medicine, especially if you feel dizzy or have joint or tendon pain. Stop exercising and seek medical advice if you develop pain, swelling, or a snapping sensation in any tendon. Gentle walking is usually fine if you feel well, but listen to your body and rest when needed.

This medicine can cause dizziness, confusion, or drowsiness in some people, which may affect your ability to drive, operate machinery, or perform tasks that require concentration. Avoid driving or operating heavy equipment until you know how this medicine affects you. Most people can continue their usual desk work, but take breaks and stay hydrated. If your job involves physical labor or working at heights, ask your doctor whether it is safe to continue during treatment.

Stop this medicine and contact your doctor immediately if you develop tendon pain or swelling, numbness or tingling in the hands or feet, a severe allergic reaction, severe diarrhea, seizures, or signs of liver injury such as yellowing of the skin or eyes. Otherwise, do not stop the medicine early on your own, because stopping before the full course is complete can allow the infection to return and can promote antibiotic resistance. Always consult your doctor before stopping this medicine.

Long-term or repeated use of this medicine can increase the risk of bacterial resistance, fungal overgrowth, and Clostridioides difficile-associated diarrhea. Rarely, prolonged use has been associated with tendon damage, peripheral neuropathy, and liver or kidney problems. If long-term treatment is needed, the clinician should monitor kidney and liver function, blood counts, and neurological symptoms regularly. This medicine is usually prescribed for short courses, and longer use should be reviewed frequently.

🔄 Substitutes for meriflox 500mg tablet

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[{"medicine":"This medicine (Norfloxacin 500 mg)","class":"Fluoroquinolone","main_use":"Urinary tract infections","route":"Oral","common_side_effects":"Nausea, diarrhea, headache, dizziness"},{"medicine":"Ciprofloxacin","class":"Fluoroquinolone","main_use":"Urinary, respiratory, and skin infections","route":"Oral and intravenous","common_side_effects":"Nausea, diarrhea, headache, rash"},{"medicine":"Ofloxacin","class":"Fluoroquinolone","main_use":"Urinary and respiratory infections","route":"Oral and topical","common_side_effects":"Nausea, insomnia, dizziness"},{"medicine":"Nitrofurantoin","class":"Nitrofuran","main_use":"Uncomplicated urinary tract infections","route":"Oral","common_side_effects":"Nausea, headache, brown urine"}]