Doxycycline
Also sold as: Vibramycin
Prescription neededOther antibiotics
Comes as:CapsuleTablet
Usual adult dose
Usual adult dose: 200 mg on the first day, then 100 mg once or twice a day. Swallow with a full glass of water while sitting or standing, and do not lie down for 30 minutes. Do not take at the same time as milk, antacids or iron.
Your doctor may give you a different dose. Children's doses depend on weight.
Side effects
Common
- nausea
- heartburn
- diarrhoea
- sunburn more easily
Serious — get help
Stop taking it and see a doctor straight away if you notice:
- severe headache with blurred vision
- pain when swallowing (ulcer in the food pipe)
- severe allergic reaction
Do not take it, or take care, if
- Pregnancy
- Breastfeeding
- Children under 8 (stains teeth), unless a doctor decides it is needed
- Severe liver disease
Interactions
Medicines that can react with this one.
Serious1 medicineDo not take these together unless your doctor says so.
- Isotretinoin
Together they can raise pressure inside the skull (severe headache, vision problems); do not combine.