"National Institutes of Health (NIH) scientists studying an emerging coronavirus have found that a combination of two licensed antiviral drugs, ribavirin and interferon-alpha 2b, can stop the virus from replicating in laboratory-grown cells. These"...
Noroxin Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Noroxin (norfloxacin) is used to treat bacterial infections of the prostate and urinary tract. Noroxin also treats gonorrhea. Norfloxacin is in a group of antibiotics called fluoroquinolones. Common side effects include nausea, diarrhea, dizziness, lightheadedness, muscle and joint aches, or headache. The fluoroquinolone class of drugs may cause increased tendon and soft tissues injuries.
The dose of Noroxin depends on the type of infection being treated. Noroxin may adversely interact with blood thinners, NSAIDs, oral steroids, insulin or diabetes medication you take by mouth, clozapine, cyclosporine, nitrofurantoin, probenecid, ropinirol, tacrine, theophylline, or tizanidine. Tell your doctor all medications you are taking. During pregnancy, Noroxin should be used only if prescribed by your doctor. It is unknown if this drug passes into breast milk. However, similar drugs pass into breast milk. Consult your doctor before breast-feeding.
Our Noroxin Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Noroxin in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop taking norfloxacin and call your doctor at once if you have sudden pain, snapping or popping sound, bruising, swelling, tenderness, stiffness, or loss of movement in any of your joints. Rest the joint until you receive medical care or instructions.
Call your doctor at once if you have any of these serious side effects:
- diarrhea that is watery or bloody;
- headache with chest pain and severe dizziness, fainting, fast or pounding heartbeats;
- irregular heart rhythm, new or worsening cough, trouble breathing;
- hallucinations, tremors, feeling restless or anxious, unusual thoughts or behavior, seizure (convulsions);
- ringing in your ears, vision problems, pain behind your eyes;
- confusion, nausea and vomiting, swelling, rapid weight gain, urinating less than usual or not at all;
- numbness, burning, pain, or tingly feeling in your hands or feet;
- pain in your upper stomach, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
- pale skin, easy bruising or bleeding, muscle weakness, fever, swollen glands, general ill feeling;
- the first sign of any skin rash, no matter how mild; or
- severe skin reaction -- fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.
Less serious side effects may include:
- mild nausea or diarrhea, stomach cramps, heartburn;
- rectal pain;
- headache, dizziness;
- back pain; or
- vaginal itching or discharge.
Read the entire detailed patient monograph for Noroxin (Norfloxacin) »
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Noroxin Overview - Patient Information: Side Effects
Nausea, diarrhea, dizziness, lightheadedness, or headache may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Tell your doctor immediately if any of these unlikely but serious side effects occur: sunburn (sun sensitivity).
Tell your doctor immediately if any of these rare but very serious side effects occur: unusual bruising/bleeding, signs of a new infection (e.g., new/persistent fever, persistent sore throat), unusual change in the amount of urine, signs of liver problems (e.g., unusual tiredness, stomach/abdominal pain, persistent nausea/vomiting, yellowing eyes/skin, dark urine).
Seek immediate medical attention if any of these rare but very serious side effects occur: severe/persistent headache, vision changes, shaking (tremors), seizures, severe dizziness, fainting, fast/irregular heartbeat, mental/mood changes (e.g., anxiety, confusion, hallucinations, depression, rare thoughts of suicide).
Rarely, this medication may cause serious, possibly permanent, nerve problems (peripheral neuropathy). Stop taking norfloxacin and tell your doctor right away if you have any of the following symptoms: pain/numbness/burning/tingling/weakness in your arms, hands, legs, or feet, changes in how you sense touch/pain/temperature/vibration/body position.
This medication may rarely cause a severe intestinal condition (Clostridium difficile-associated diarrhea) due to a type of resistant bacteria. This condition may occur during treatment or weeks to months after treatment has stopped. Do not use anti-diarrhea products or narcotic pain medications if you have any of the following symptoms because these products may make them worse. Tell your doctor immediately if you develop: persistent diarrhea, abdominal or stomach pain/cramping, blood/mucus in your stool.
Use of this medication for prolonged or repeated periods may result in oral thrush or a new vaginal yeast infection. Contact your doctor if you notice white patches in your mouth, a change in vaginal discharge, or other new symptoms.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
In the US -
Read the entire patient information overview for Noroxin (Norfloxacin)»
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Noroxin FDA Prescribing Information: Side Effects
In clinical trials involving 82 healthy subjects and 228 patients with gonorrhea, treated with a single dose of norfloxacin, 6.5% reported drug-related adverse experiences. However, the following incidence figures were calculated without reference to drug relationship.
The most common adverse experiences ( > 1.0%) were: dizziness (2.6%), nausea (2.6%), headache (2.0%), and abdominal cramping (1.6%).
Laboratory adverse changes considered drug-related were reported in 4.5% of patients/subjects. These laboratory changes were: increased AST (SGOT) (1.6%), decreased WBC (1.3%), decreased platelet count (1.0%), increased urine protein (1.0%), decreased hematocrit and hemoglobin (0.6%), and increased eosinophils (0.6%).
In clinical trials involving 52 healthy subjects and 1980 patients with urinary tract infections or prostatitis treated with multiple doses of norfloxacin, 3.6% reported drug-related adverse experiences. However, the incidence figures below were calculated without reference to drug relationship.
The most common adverse experiences ( > 1.0%) were: nausea (4.2%), headache (2.8%), dizziness (1.7%), and asthenia (1.3%).
Additional reactions (0.3%-1.0%) were: abdominal pain, back pain, constipation, diarrhea, dry mouth, dyspepsia/heartburn, fever, flatulence, hyperhidrosis, loose stools, pruritus, rash, somnolence, and vomiting.
Less frequent reactions (0.1%-0.2%) included: abdominal swelling, allergies, anorexia, anxiety, bitter taste, blurred vision, bursitis, chest pain, chills, depression, dysmenorrhea, edema, erythema, foot or hand swelling, insomnia, mouth ulcer, myocardial infarction, palpitation, pruritus ani, renal colic, sleep disturbances, and urticaria.
Abnormal laboratory values observed in these patients/subjects were: eosinophilia (1.5%), elevation of ALT (SGPT) (1.4%), decreased WBC and/or neutrophil count (1.4%), elevation of AST (SGOT) (1.4%), and increased alkaline phosphatase (1.1%). Those occurring less frequently included increased BUN, increased LDH, increased serum creatinine, decreased hematocrit, and glycosuria.
The most frequently reported adverse reaction in post-marketing experience is rash.
The following additional adverse reactions have been reported since the drug was marketed:
Toxic epidermal necrolysis, Stevens-Johnson syndrome and erythema multiforme, exfoliative dermatitis, photosensitivity/phototoxicity reactions (see PRECAUTIONS), leukocytoclastic vasculitis, drug rash with eosinophilia and systemic symptoms (DRESS syndrome).
Pseudomembranous colitis, hepatitis, jaundice including cholestatic jaundice and elevated liver function tests, pancreatitis (rare), stomatitis. The onset of pseudomembranous colitis symptoms may occur during or after antibacterial treatment (see WARNINGS).
Hepatic failure, including fatal cases.
Other adverse events reported with quinolones include: agranulocytosis, albuminuria, candiduria, crystalluria, cylindruria, dysphagia, elevation of blood glucose, elevation of serum cholesterol, elevation of serum potassium, elevation of serum triglycerides, hematuria, hepatic necrosis, symptomatic hypoglycemia, nystagmus, postural hypotension, prolongation of prothrombin time, and vaginal candidiasis.
Read the entire FDA prescribing information for Noroxin (Norfloxacin) »
Additional Noroxin Information
Noroxin - User Reviews
Noroxin User Reviews
Now you can gain knowledge and insight about a drug treatment with Patient Discussions.
Report Problems to the Food and Drug Administration
Find out what women really need.