Tabletas de levofloxacina para infección
Evoxil
Revisado por pares por Dr Colin Tidy, MRCGPÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 22 de mayo de 2023
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Levofloxacin is given to treat a bacterial infection.
It is important to complete the full course of treatment. This is to prevent the infection from coming back.
The most common side effects of levofloxacin are feeling sick (nausea) and diarrhoea. They are usually mild and soon pass.
De un vistazo
Levofloxacin is an antibiotic used to treat various bacterial infections like sinusitis and urine infections.
It is often used when other antibiotics haven't worked or cannot be prescribed.
Los efectos secundarios comunes incluyen náuseas, diarrea, dolor de cabeza y mareos.
Do not take with antacids, iron, or zinc supplements within two hours of your dose.
Avoid alcohol and strong sunlight while taking this medicine.
See your doctor if you experience sudden pain in your back, chest, or abdomen.
Tell your doctor if you have tendon problems, kidney issues, epilepsy, or a heart condition.
About levofloxacin
Tipo de medicamento | A quinolone antibiotic |
Usado para | Tratamiento de infecciones |
También llamado | Evoxil® |
Disponible como | Tablets, eye drops |
What is levofloxacin used for?
Levofloxacin is a type of antibiotic used to treat bacterial infections such as sinusitis, infecciones respiratorias, urine infections, prostatitis, and some skin and soft tissue infections.
It works by killing the bacteria which are the cause of the infection.
Other antibiotics are usually prescribed in preference to levofloxacin. Levofloxacin is reserved for infections which have not improved with other antibiotic treatment. It is also used if other, more preferred, antibiotics cannot be prescribed for some reason.
Levofloxacin is also available as eye drops for the treatment of eye infections. For more information on this use see the leaflet Gotas oftálmicas de levofloxacina.
Side effects of levofloxacin
Common side effects of levofloxacin are:
Náuseas.
Vómitos.
Diarrea.
Dolor de cabeza.
Sentirse mareado.
Problems sleeping.
Encontrará una lista completa en el prospecto informativo del fabricante que se suministra con su medicamento.
Los efectos no deseados a menudo mejoran a medida que su cuerpo se adapta al nuevo medicamento, pero hable con su médico o farmacéutico si alguno de los siguientes persiste o se vuelve problemático.
How to manage levofloxacin side effects
Common levofloxacin side effects (these affect fewer than 1 in 10 people) | ¿Qué puedo hacer si experimento esto? |
Feeling sick or being sick (vomiting) | Stick to simple foods - avoid rich or spicy meals. It may help to take the tablets after food |
Diarrea | Drink plenty of water to replace lost fluids. If the diarrhoea is severe or continues to be a problem, speak with your pharmacist or doctor for advice |
Dolor de cabeza | Bebe mucha agua y pide a tu farmacéutico que te recomiende un analgésico adecuado. Si los dolores de cabeza continúan, informa a tu médico |
Sensación de mareo | Do not drive and do not use tools or machines until you feel well again |
Problems sleeping | Si es problemático, hable con su médico |
Temporary changes to liver enzymes | This could be noticed if you have certain blood tests |
Importante: there are also a number of rare but more serious side effects which have been associated with this medicine. Speak with your doctor as soon as possible if you experience the following:
An allergic-type reaction, such as swelling around your face or mouth, a skin rash, or any difficulty breathing.
Sudden pain in the abdomen (tummy), chest or back.
Pain or inflammation in your muscles, tendons or joints (possible tendinopathy).
Any feelings of pain, burning, tingling, numbness or weakness.
Any problems with your vision or eyes, or changes to taste, smell or hearing.
Disordered thinking or thoughts about harming yourself.
Severe tiredness, depressed mood, anxiety, problems with your memory or severe problems sleeping.
If you experience any other symptoms which you think may be due to the tablets, speak with your doctor or pharmacist for advice.
Who should not take levofloxacin tablets
Some medicines aren’t suitable for certain health conditions or may require extra care. Before taking levofloxacin, it is important to let your doctor know:
Si estás embarazada, intentando concebir o amamantando.
Si tienes menos de 18 años de edad.
If you have ever experienced a problem with your tendons, called tendonitis.
Si tienes algún problema con el funcionamiento de tus riñones.
If you have epilepsy or any other condition that causes fits.
If you have ever had mental health problems.
If you have a heart condition, or if you have been told you have an unusual heartbeat.
If you have aortic aneurysm or a family history of aneurysm disease.
If you have a condition causing tired and weak muscles, called myasthenia gravis.
If you know you have glucose 6-phosphate dehydrogenase (G6PD) deficiency. This is a genetic disorder which causes problems after eating foods such as fava beans.
Si está tomando otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que esté disponible para comprar sin receta, así como medicamentos herbales y complementarios.
If you have ever had an allergic reaction to any medicine, especially to another quinolone antibiotic such as norfloxacin, ofloxacin, ciprofloxacin, moxifloxacin, or nalidixic acid.
How to take levofloxacin tablets
Read the information leaflet in the pack before starting, as it explains levofloxacin and its possible side effects.
Take levofloxacin exactly as your doctor tells you. The usual dose is 500 mg daily, but it may be 250 mg once daily or 500 mg twice daily depending on your infection. Check the label for your correct dose.
You can take it before or after meals. If taking once a day, take it in the morning. If more than once a day, space doses about 12 hours apart.
Swallow tablets with water. You can split them along the score line if needed, but do not crush or chew.
Avoid antacids, iron, or zinc supplements for two hours before and after each dose, as they reduce how well the medicine works.
If you forget a dose, take it when you remember unless the next dose is due then skip the missed dose. Don’t take two doses at once.
Finish the full course even if you feel better, unless your doctor tells you to stop. Most courses last 7–14 days. See your doctor if you still feel unwell after finishing the treatment.
Obteniendo el máximo de tu tratamiento
Remember to keep any routine appointments with your doctor. This is so your progress can be monitored.
Levofloxacin can make your skin more sensitive to sunlight. Use sunscreen and avoid sunbeds, especially in strong sunlight.
Check with a pharmacist before taking any other medicines. Avoid NSAID painkillers, such as ibuprofen, while on levofloxacin.
Algunas personas desarrollan candidiasis (oral o vaginal) after taking a course of antibiotics. If you think you have thrush, speak with your doctor or pharmacist for advice.
This antibiotic may stop the oral vacuna oral contra la fiebre tifoidea from working. If you are having any vaccinations, make sure the person treating you knows that you are taking this medicine.
Levofloxacin may make you feel light-headed and impair your ability to concentrate. Make sure your reactions are normal before you drive and before you use tools or machines.
If you have diabetes, you may need to check your blood sugar (glucose) levels more regularly, as levofloxacin can affect the levels of sugar in your blood.
How to store levofloxacin
Mantenga todos los medicamentos fuera del alcance y la vista de los niños.
Almacenar en un lugar fresco y seco, lejos del calor y la luz directos.
Información importante sobre todos los medicamentos
Información importante sobre todos los medicamentos
Nunca tome más de la dosis prescrita. Si sospecha que usted u otra persona podría haber tomado una sobredosis de este medicamento, acuda al departamento de accidentes y emergencias de su hospital local. Lleve el envase con usted, incluso si está vacío.
Este medicamento es para ti. Nunca lo des a otras personas, incluso si su condición parece ser la misma que la tuya.
Si vas a someterte a una operación o a un tratamiento dental, informa a la persona que realiza el tratamiento sobre los medicamentos que estás tomando.
No guardes medicamentos caducados o no deseados. Llévalos a tu farmacia local, que se encargará de desecharlos por ti.
Si tienes alguna pregunta sobre este medicamento, consulta a tu farmacéutico.
Informar efectos secundarios de un medicamento o vacuna
Si experimenta efectos secundarios, puede reportarlos en línea a través de Sitio web de Yellow Card.
Preguntas frecuentes
How long does it take for levofloxacin to work?
Levofloxacin usually starts to work within a few hours, with most people noticing an improvement in their symptoms after 1-3 days. Always finish your course of treatment even if you are feeling better.
Is levofloxacin safe to take during pregnancy?
Levofloxacin is generally not recommended during pregnancy as it may affect developing cartilage and joints in the baby. Doctors usually only prescribe levofloxacin if no safer option is available and the infection is serious.
Can you drink alcohol while taking levofloxacin?
It is recommended that you avoid drinking alcohol while taking levofloxacin. Alcohol doesn't stop levofloxacin from working, but it can make side effects such as nausea, dizziness, or stomach upset worse and it may slow down your body’s recovery.
Is levofloxacin a penicillin?
No, levofloxacin is not a penicillin. It is a fluoroquinolone antibiotic, which works differently from penicillin-type antibiotics and is used to treat infections when other antibiotics may not be suitable.
What bacteria does levofloxacin kill?
Levofloxacin kills a wide range of bacteria, including both Gram-positive and Gram-negative bacteria. It is a broad-spectrum antibiotic which means it works against many different bacteria.
What should you avoid while taking levofloxacin?
When taking levofloxacin, you should avoid having dairy products at the time of dose, antacids and supplements - especially iron, calcium, and zinc - within 2 hours before or after your dose, and large amounts of alcohol.

¿Inseguro sobre mezclar medicamentos?
Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.
Preguntas frecuentes
Can I split levofloxacin tablets?
Yes, you can split levofloxacin tablets along the score line if needed. However, you should not crush or chew them.
When is the best time of day to take levofloxacin?
If you are prescribed a once-daily dose of levofloxacin, it is recommended to take it in the morning. If you are taking it more than once a day, you should space your doses approximately 12 hours apart.
Lecturas adicionales y referencias
- Manufacturer's PIL, Levofloxacin 250 mg and 500 mg Film-coated Tablets; Ipca Laboratories UK Ltd, The electronic Medicines Compendium. Dated January 2021.
Sobre el autorVer biografía completa

Michael Stewart, MRPharmS
Gerente de Revisión de Folletos de Medicamentos – Contratista, Farmacéutico
BPharm (Hons), MRPharmS
Michael es un farmacéutico comunitario que ejerce en Midlands y South Yorkshire con más de 20 años de experiencia asesorando sobre medicamentos y condiciones médicas. Tiene una sólida formación en capacitación en atención médica, habiendo producido e impartido cursos de formación para equipos de farmacia y personal de entornos de atención residencial, incluidas enfermeras. También ha contribuido a juntas asesoras de farmacia para la gestión de condiciones de baja gravedad en la comunidad.
Acerca del revisorVer biografía completa

Dr Colin Tidy, MRCGP
Médico General, Autor Médico
MBBS, MRCGP, MRCP (Paediatrics), DCH
El Dr. Colin Tidy es un médico del NHS, con sede en Oxfordshire.
Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Artículo también disponible en Inglés, Alemán, Español, Francés, Italiano, Portugués, Hindi, Hebreo, Árabe, y Sueco.
Próxima revisión: 21 Nov 2027
22 de mayo de 2023 | Última versión

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