Active substances: Doxycycline
Absorption of tetracycline occurs in the stomach and the upper small intestine.
Absorption of tetracyclines has been reported to be impaired by milk products, aluminum hydroxide gels, sodium bicarbonate, calcium and magnesium salts, laxatives containing magnesium and iron preparations.
The mechanisms responsible for decreased absorption appear to be chelation and an increase in gastric pH.
Recent research has shown no significant loss of effectiveness in oral contraceptives while using most tetracycline antibiotics including doxycycline, although many physicians still recommend the use of barrier contraception for people taking the drug to prevent unwanted pregnancy.Respiratory tract and urinary tract infections Ureaplasma, Mycoplasma, and others. Representative pathogenic genera include Chlamydia, Streptococcus, caused by Klebsiella species Some Gram-positive bacteria have developed resistance to doxycycline.
Doxycycline crosses into breastmilk. This will stop the medicine irritating your food pipe or stomach. What if I forget to take it?
If you forget to take a dose, take it as soon as you remember, unless it's nearly time for your next dose.
In this case, just leave out the missed dose and take your next dose as normal.
Never take 2 doses at the same time. Never take an extra dose to make up for a forgotten one.
You could also ask your pharmacist for advice on other ways to remember your medicines.
What if I take too much?
Accidentally taking an extra dose of doxycycline is unlikely to harm you. Speak to your pharmacist or doctor if you're worried or you take more than 1 extra dose.
Side effects Like all medicines, doxycycline can cause side effects, although not everyone gets them. Common side effects These common side effects happen in around 1 in 10 people.
Keep taking the medicine, but talk to your doctor or pharmacist if these side effects bother you or don't go away: headaches feeling or being sick nausea or vomiting being sensitive to sunlight Serious side effects are rare and happen in less than 1 in 1,000 people.