If you are taking doxycycline for any other infection, tell your doctor if you don't start feeling better after 3 days. Also tell them if, at any time, you start to feel worse.
If you are taking doxycycline to prevent malaria, you will not feel any different. You should take doxycycline as prescribed, and continue taking it for 4 weeks after leaving the area where there is malaria. Some people get a fungal infection called thrush after taking a course of antibiotics like doxycycline. Antibiotics kill the normal harmless bacteria that help to protect you against thrush. Doxycycline does not affect any type of contraception, including the contraception pill and emergency contraception.
However, if doxycycline makes you vomit or have severe diarrhoea for more than 24 hours, your combined pill may not protect you from pregnancy. Look on the pill packet to find out what to do. Read more about what to do if you're on the pill and you're being sick or have diarrhoea. There's no clear evidence to suggest that taking doxycycline will reduce fertility in either men or women. However, speak to a pharmacist or your doctor before taking it if you're trying to get pregnant.
Doxycycline can build up in growing bones and teeth by binding to calcium. This can stain teeth. It only happens in growing bones and teeth. This is why doxycycline is not given to children under 12 years old or to pregnant or breastfeeding women. Avoid drinking alcohol with doxycycline. Alcohol can stop it working properly. Speak to your doctor or pharmacist if you have questions about this. Do not take your medicine together with dairy products. This is because dairy foods like milk, cheese and yoghurt can stop your body from absorbing doxycycline.
You can have dairy products a few hours before or after your dose. Yes, you can take doxycycline if you are allergic to penicillin. They are 2 different types of antibiotic. Doxycycline has been used successfully in hot countries for many years. The best way to protect yourself against a reaction to sunlight is to be careful with sun exposure.
Page last reviewed: 23 November Next review due: 23 November Doxycycline On this page About doxycycline Key facts Who can and can't take doxycycline How and when to take it Side effects How to cope with side effects Pregnancy and breastfeeding Cautions with other medicines Common questions.
About doxycycline Doxycycline is an antibiotic. Doxycycline is available on prescription. It comes as capsules. Help us improve our website Can you answer a quick question about your visit today? For most infections, you'll start to feel better in a few days but it is important to finish the course of medicine. In that trial, berberine may have decreased tetracycline absorption. Another double-blind trial found that berberine neither improved nor interfered with tetracycline effectiveness in cholera patients.
Therefore, it remains unclear whether a significant interaction between berberine-containing herbs and doxycycline and related drugs exists.
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Doxycycline is used to treat a wide variety of infections and to prevent traveler's diarrhea. Tetracycline can interfere with the activity of folic acid , potassium , and vitamin B2 , vitamin B6 , vitamin B12 , vitamin C , and vitamin K.
This is generally not a problem when taking tetracycline for two weeks or less. People taking tetracycline for longer than two weeks should ask their doctor about vitamin and mineral supplementation. Taking mg vitamin C simultaneously with tetracycline was shown to increase blood levels of tetracycline in one study.
The importance of this interaction is unknown. Taking large amounts of niacinamide, a form of vitamin B3 , can suppress inflammation in the body. According to numerous preliminary reports, niacinamide, given in combination with tetracycline or minocycline , may be effective against bullous pemphigoid, a benign, autoimmune blistering disease of the skin. Preliminary evidence also suggests a similar beneficial interaction may exist between tetracycline and niacinamide in the treatment of dermatitis herpetiformis.
Neomycin can decrease absorption or increase elimination of many nutrients, including calcium , carbohydrates, beta-carotene , fats, folic acid , iron , magnesium , potassium , sodium, and vitamin A , vitamin B12 , vitamin D , and vitamin K. Surgery preparation with oral neomycin is unlikely to lead to deficiencies.
It makes sense for people taking neomycin for more than a few days to also take a multivitamin-mineral supplement. Several cases of excessive bleeding have been reported in people who take antibiotics. One study showed that people who had taken broad-spectrum antibiotics had lower liver concentrations of vitamin K2 menaquinone , though vitamin K1 phylloquinone levels remained normal.
Several antibiotics appear to exert a strong effect on vitamin K activity, while others may not have any effect. Therefore, one should refer to a specific antibiotic for information on whether it interacts with vitamin K.
Doctors of natural medicine sometimes recommend vitamin K supplementation to people taking antibiotics. Additional research is needed to determine whether the amount of vitamin K1 found in some multivitamins is sufficient to prevent antibiotic-induced bleeding.
Moreover, most multivitamins do not contain vitamin K. Tooth discoloration is a side effect of minocycline observed primarily in young children, but it may occur in adults as well. Vitamin C supplementation may prevent staining in adults taking minocycline. A common side effect of antibiotics is diarrhea , which may be caused by the elimination of beneficial bacteria normally found in the colon. Controlled studies have shown that taking probiotic microorganisms—such as Lactobacillus casei , Lactobacillus acidophilus , Bifidobacterium longum , or Saccharomyces boulardii —helps prevent antibiotic-induced diarrhea.
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