Tabletas de tetraciclina
Revisado por Dr Colin Tidy, MRCGPÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 21 Nov 2022
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Tetracycline is an antibiotic. Space out your doses during the day and make sure you continue to take the tablets until you finish the course prescribed for you.
Take tetracycline on an empty stomach-either one hour before or two hours after meals, and avoid milk for two hours before and after taking it.
Swallow the tablets with plenty of water. Sit upright or stand up as you take the tablets.
The most common side effects of tetracycline include diarrhoea, stomach upset, and tummy (abdominal) pain.
About tetracycline
Tipo de medicamento | Un antibiótico de tetraciclina |
Usado para | Infecciones bacterianas; acné; rosácea |
Disponible como | Tabletas |
What is tetracycline used for?
Tetracycline is a type of antibiótico that is used to treat bacterial infections such as chest infections, mouth infections, infecciones de transmisión sexual, and infections resulting from some types of bites.
Tetracycline is also prescribed for some longer-term skin conditions, such as acné y rosácea.
Tetracycline works by stopping bacteria from growing and causing infection.
Side effects of tetracycline
Common side effects of tetracycline are:
Diarrea.
Stomach upset.
Dolor de barriga.
Dolor de cabeza.
Visión borrosa.
You will find a full list of the side effects which can be associated with your medicine on the manufacturer's printed information leaflet supplied with the medicine.
Speak with your doctor or pharmacist if any side effects continue or become troublesome.
How to manage tetracycline side effects
Tetracycline side effects | ¿Qué puedo hacer si experimento esto? |
Stomach upset, tummy pain | Mantente con alimentos simples - evita comidas grasosas o picantes |
Diarrea | Bebe mucha agua para reponer los líquidos perdidos. Si esto continúa o es grave, consulta a un médico |
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 |
Visión borrosa | Do not drive and do not use tools or machines while affected. If it continues, speak with your doctor |
Importante: tetracycline can occasionally cause allergic reactions, such as a skin rash. Speak with a doctor as soon as possible if this happens to you.
Si experimenta cualquier otro síntoma que crea que puede deberse a las tabletas, hable con su médico o farmacéutico para obtener más consejos.
Who should not take tetracycline?
Some medicines are not suitable for people with certain conditions. Before starting tetracycline it is important that your doctor knows:
If you are pregnant or breastfeeding. You should reportado take tetracycline.
If you are under 12 years of age. Tetracycline should reportado be taken by children.
Si tienes algún problema con el funcionamiento de tu hígado, o si tienes algún problema con el funcionamiento de tus riñones.
If you have an inflammatory condition called systemic lupus erythematosus (also called lupus, or SLE), or if you have a condition causing muscle weakness, called myasthenia gravis. Tetracycline can make these conditions worse.
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.
Si alguna vez has tenido una reacción alérgica a un medicamento.
How to take tetracycline
Read the leaflet inside the pack before starting tetracycline. It explains how the antibiotic works and lists possible side effects.
Take tetracycline exactly as your doctor tells you to. Check the label for your exact dose and schedule.
For infections: usually 3-4 doses per day.
For acne or rosacea: usually 2 doses per day.
Take your doses at the same times each day and space them evenly.
Take the tablets when your stomach is empty. This means taking your doses one hour before you eat food, or waiting until two hours after you have eaten.
Avoid milk for 2 hours before and after your dose as it can make the medicine less effective
The tablets can cause throat irritation. To prevent this, you should swallow the tablets with a large drink of water. Sit upright or stand up to take the tablets. Try to avoid taking tetracycline just before lying down, or at bedtime.
If you miss a dose, take it as soon as you remember. Try to take the correct number of doses each day, but do not take two doses together to make up for a missed dose.
Obteniendo el máximo de tu tratamiento
Treatment usually lasts about a week for infections, or several months for acne or rosacea. Finish the full course unless your doctor says otherwise.
Check with a pharmacist before taking other medicines, as some can affect tetracycline. Avoid antacids or supplements with iron, magnesium, or zinc at the same time as they reduce its effectiveness. Take them at least 2 hours before or after your dose.
Antibiotics can sometimes cause thrush (oral o vaginal). If this happens, speak to your doctor or pharmacist.
Tetracycline can make your skin more sensitive to sunlight. Avoid strong sun and sunbeds until you know how your skin reacts.
Tetracycline can stop the oral vacuna oral contra la fiebre tifoidea from working properly. Tell the person giving you any vaccines that you are taking this antibiotic.
How to store tetracycline
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.
Si vas a someterte a una operación o tratamiento dental, informa a la persona que realiza el tratamiento sobre los medicamentos que estás tomando.
Este medicamento es para ti. Nunca lo des a otras personas, incluso si su condición parece ser la misma que la tuya.
No guardes medicamentos caducados o no deseados. Llévalos a tu farmacia local, donde se encargarán 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 tetracycline to work?
For most infections tetracycline starts to work after the first dose, with most people noticing improvements in their symptoms after 2-3 days. For acne it can take 6-8 weeks and for rosacea it may take several weeks to see noticeable results.
Is it safe to take tetracycline during pregnancy?
No, it is not safe to take tetracycline during pregnancy, especially after the first trimester. Tetracycline can affect the development of bones and teeth in a baby.
Can I drink alcohol while taking tetracycline?
You can drink alcohol in moderation while taking tetracycline. Alcohol does not stop tetracycline from working, however it may increase side effects such as stomach upset, dizziness, or feeling unwell. For best results, you should limit alcohol until you finish your course and feel fully recovered.
Why does tetracycline stain teeth?
Tetracycline can stain teeth because it sticks to calcium in developing teeth. Over time, this causes the teeth to change colour, starting yellow, then turning brown or grey as they’re exposed to light. Once this happens, the staining is permanent.
Why can't you take tetracycline before bed?
You should not take tetracycline before bed because lying down straight after taking it increases the chance of it getting stuck, causing irritation and possible inflammation of the throat. You should take it with a full glass of water and stay upright for at least 30 minutes afterwards.
Lecturas adicionales y referencias
- Manufacturer's PIL, Tetracycline Tablets 250 mg; Accord-UK Ltd, The electronic Medicines Compendium. Dated November 2020.
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.
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