Levofloxacin 250 mg

Category- Allopathy

Medicine Highlights

Levofloxacin Uses 

Levofloxacin is an antibiotic medicine that belongs to the class of fluoroquinolones. It is used to kill bacteria and treat symptoms of conditions like: 

1. Pneumonia and other chest infections 
2. Sinus infections 
3. Urinary tract and kidney infections 
4. Skin and soft tissue infections 
5. Prostate infections (prostatitis)      

Directions for use

1. Take this medicine exactly as prescribed by your doctor, at the same time each day. 
2. Do not stop taking this medicine without your doctor’s approval, even if you feel better. 
3. If you forget to take this medicine, take it as soon as you remember. If it’s almost time for your next dose, skip the missed dose. 

Levofloxacin side effects 

More Common  

1. Nausea 
2. Diarrhea or loose stools 
3. Headache 
4. Dizziness 
5. Stomach pain 
6. Trouble sleeping (insomnia) 
7. Feeling tired or weak 
8. Rash or itching     

Less Common

1. Tendon pain or swelling (especially in the Achilles tendon) 
2. Numbness or tingling in hands/feet 
3. Severe mood changes (anxiety, confusion) 
4. Irregular heartbeat 
5. Severe diarrhea     

How Levofloxacin works 

Levofloxacin works by going inside the bacteria and stopping them from growing or multiplying. It blocks the bacteria’s ability to make new cells, so the germs become weak and cannot spread in the body. As the bacteria stop multiplying, they slowly die, and the infection starts to improve. This medicine works only on bacterial infections and does not help with viral illnesses like the common cold or flu. 

Safety Measures and Warning 

Allergy to Fluoroquinolones

Avoid levofloxacin if you are allergic to it or similar antibiotics (fluoroquinolones). Taking it again may cause severe reactions like swelling, breathing difficulty, or dangerous rashes. Inform your doctor about any past drug allergies. 

Kidney Problems

Use levofloxacin with caution if you have kidney disease. The medicine may build up in the body and lead to side effects like dizziness, confusion, or tendon issues. Inform your doctor about any kidney-related conditions so the dose can be adjusted properly. 

Tendon Problems

Do not take levofloxacin if you have had tendon swelling or a torn tendon, especially from previous antibiotic use. This medicine can weaken the tendons further and may cause sudden, severe tendon injury. Tell your doctor if you have any tendon pain or if you are taking steroids. 

Heart Rhythm Problems (QT Prolongation)

Avoid levofloxacin if you have any heart rhythm issues. It may worsen irregular heartbeat and increase the risk of fainting or serious heart-related complications. Tell your doctor if you have a history of abnormal heartbeat or long QT syndrome. 

Myasthenia Gravis

Avoid levofloxacin if you have myasthenia gravis, as it can worsen muscle weakness and may cause breathing difficulties. Inform your doctor if you have any muscle-weakness disorders. 

Children and Teenagers

Levofloxacin is usually not recommended for children or teenagers unless a doctor clearly says it is necessary. It may affect bone and joint development. Always check with a doctor before giving it to anyone under 18. 

Pregnant or Breastfeeding Women

Avoid levofloxacin during pregnancy or breastfeeding unless absolutely needed. It may affect the baby’s developing bones and joints. Inform your doctor if you are pregnant or breastfeeding before taking this medicine. 

Levofloxacin Interaction with Food Product

Levofloxacin can be taken with or without food, but you should avoid taking it together with milk, yogurt, or calcium-rich foods, as these can reduce how well the medicine gets absorbed.  Keep at least a 2-hour gap before or after these foods or supplements to ensure the antibiotic works effectively. 

Levofloxacin Interaction with Other Medicines

Avoid taking Levofloxacin with the following medicines, as it may increase or decrease the desired effect, or in worse cases, it could be fatal: 

Levofloxacin Chemical Structure

IUPAC (International Union of Pure and Applied Chemistry)/ Chemical name

Levofloxacin: (2S)-7-fluoro-2-methyl-6-(4-methylpiperazin-1-yl)-10-oxo-4-oxa-1-azatricyclo [7.3.1.0] trideca-5(13),6,8,11-tetraene-11-carboxylic acid 

Intake routine/cycle

Daily dose

Take Levofloxacin exactly as your doctor recommends. The dose may change based on your condition and how well you respond. Do not take more than prescribed without consulting your doctor. 

Missed Dose

If you forget to take your medicine, take the medication as soon as you remember. If it’s nearly time for your next dose, skip the missed one and continue with your regular schedule. Always consult the doctor before making any changes to your dosage. 

Overdose

It is not recommended to take levofloxacin more than 1500 mg per day. Overdose may cause tremors, chest pain, fast or irregular heartbeat, nervousness, dizziness, headache, muscle cramps, or high blood pressure. In case of any of these symptoms, seek immediate medical help. 

Storage

1. Store the medicine at room temperature 
2. Keep away from sunlight and moisture 
3. Keep out of reach of children 

Levofloxacin Summary

Levofloxacin is an antibiotic that belongs to the fluoroquinolone class of drugs. It is used to treat bacterial infections such as chest infections (pneumonia, bronchitis), sinus infections, urinary tract and kidney infections, skin infections, and prostate infections in men. It works by killing bacteria and stopping them from multiplying, helping the body fight off infection. Common side effects include nausea, diarrhea, headache, dizziness, stomach pain, trouble sleeping, or feeling tired. Serious side effects, though rare, can include tendon pain or rupture, nerve problems, severe allergic reactions, irregular heartbeat, or mood changes.  

Levofloxacin should not be taken by people allergic to fluoroquinolones, those with tendon problems, severe kidney disease, heart rhythm issues, or myasthenia gravis. It is usually not recommended for children, pregnant, or breastfeeding women unless the doctor advises. Avoid taking it with milk, yogurt, calcium, iron, zinc, or antacids, as these can reduce its effectiveness. If accidentally taken by someone who should avoid it, stop immediately and seek medical help. Always inform your doctor about allergies, medical history, or pregnancy before taking this medicine.   

FAQ’s

What are the uses of levofloxacin? 

Levofloxacin is an antibiotic used to treat different types of bacterial infections. It helps with chest infections like pneumonia, sinus infections, urinary tract and kidney infections, skin infections, and prostate infections in men. It works by killing the bacteria causing the illness and helping the body recover. 

What are the side effects of Levofloxacin? 

Levofloxacin can cause some common side effects like nausea, diarrhea, headache, dizziness, stomach pain, trouble sleeping, or feeling tired. Rare but serious side effects may include tendon pain or rupture, nerve problems like tingling or numbness, severe allergic reactions, irregular heartbeat, or mood changes. If any serious symptoms occur, you should contact your doctor immediately. 

Who should not take Levofloxacin?

You should not take Levofloxacin if you are allergic to it or other fluoroquinolone antibiotics, have a history of tendon problems, have severe kidney disease, heart rhythm issues (QT prolongation), or myasthenia gravis. It is usually not recommended for children, pregnant, or breastfeeding women unless the doctor specifically advises it. 

Can I take Levofloxacin during pregnancy? 

Levofloxacin is generally not recommended during pregnancy, as it may affect the baby’s bone and joint development. It should only be used if the doctor thinks the benefits outweigh the risks. Always inform your doctor if you are pregnant before taking this medicine. 

What class of drug is Levofloxacin? 

Levofloxacin belongs to the fluoroquinolone class of antibiotics. It works by killing bacteria and treating bacterial infections in different parts of the body. 

Reference 

1. Levofloxacin Dosage Guide with Precautions [Internet]. Drugs.com. Available from 
2. Podder V, Sadiq NM. Levofloxacin [Internet]. www.ncbi.nlm.nih.gov. StatPearls Publishing; 2024. Available from 
3. PubChem. Levofloxacin [Internet]. pubchem.ncbi.nlm.nih.gov. Available from 

Pranathi Chintaluri

Pranathi is a final year Pharm D student at Chalapathi Institute of Pharmaceutical Sciences. She loves learning and applying her knowledge in pharmacy and has a passion for writing, which allows her to express ideas clearly and creatively. She enjoys combining her technical skills with her love for writing and communication to make a meaningful impact. Currently she is working on a research paper about “Consanguineous marriages and its impact on children’s health” which will be published by the end of 2025.