A new study shows that the antibiotic doxycycline is an effective treatment for a range of infections - including men who have had a urinary tract infection.
The study, published in theJournal of Infectious Diseases, included 400 men in England with a mean age of 52 and a mean duration of antibiotic treatment of 10.5 months.
The study included 400 healthy men aged 40 and over, and 400 healthy young men aged between 40 and 55 who had a urinary tract infection or UTI. The study was designed to look at the risk of developing antibiotic resistance in infections caused by bacteria. The men were given doxycycline to treat bacterial infections in the urinary tract, or to treat a bacterial infection in the bloodstream.
Of the 400 men who received the antibiotic, half were given doxycycline as a single dose. The other half took doxycycline as a single dose, and the group was given doxycycline 100mg. The group who received doxycycline as a single dose had a slightly higher risk of developing antibiotic resistance than the other groups.
The results showed that in patients who had a urinary tract infection or UTI, the risk of developing antibiotic resistance was higher for patients who took doxycycline as a single dose than for those who took a single dose of the antibiotic as a single dose. The risk of developing antibiotic resistance is likely to be higher in patients who were taking the antibiotic as a single dose of doxycycline.
The researchers said that this is the first large-scale study to look at the effects of the antibiotic on the risk of developing antibiotic resistance. The study also found that the antibiotic was effective in treating a wide range of bacterial infections and that the most common side effects of the antibiotic were nausea, vomiting, diarrhoea, diarrhoea, and abdominal pain.
The researchers also looked at the results of the study at different time points of the course of infection.
tell your doctor and pharmacist if you are allergic to doxycycline, minocycline, tetracycline, demeclocycline, any other medications, sulfites, or any of the ingredients in doxycycline capsules, extended-release capsules, tablets, extended-release tablets, or suspension. Ask your pharmacist for a list of the ingredients.
tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, and nutritional supplements you are taking or plan to take. Be sure to mention any of the following: acitretin (Soriatane); anticoagulants ('blood thinners') such as warfarin (Coumadin, Jantoven); barbiturates such as butabarbital (Butisol), phenobarbital, and secobarbital (Seconal); bismuth subsalicylate; carbamazepine (Epitol, Tegretol, others); isotretinoin (Absorica, Amnesteem, Clavaris, Myorisan, Zenatane); penicillin; phenytoin (Dilantin, Phenytek); and proton pump inhibitors such as dexlansoprazole (Dexilant), esomeprazole (Nexium, in Vimovo), lansoprazole (Prevacid, in Prevpac), omeprazole (Prilosec, in Yosprala, Zegerid), pantoprazole (Protonix), and rabeprazole (Aciphex). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
be aware that antacids containing magnesium, aluminum, or calcium, calcium supplements, iron products, and laxatives containing magnesium interfere with doxycycline, making it less effective. Take doxycycline 2 hours before or 6 hours after taking antacids, calcium supplements, and laxatives containing magnesium. Take doxycycline 2 hours before or 4 hours after iron preparations and vitamin products that contain iron.
tell your doctor if you have or have ever had lupus (condition in which the immune system attacks many tissues and organs including the skin, joints, blood, and kidneys), intracranial hypertension (pseudotumor cerebri; high pressure in the skull that may cause headaches, blurry or double vision, vision loss, and other symptoms), a yeast infection in your mouth or vagina, surgery on your stomach, asthma, or kidney or liver disease.
you should know that doxycycline may decrease the effectiveness of hormonal contraceptives (birth control pills, patches, rings, or injections). Talk to your doctor about using another form of birth control.
tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while taking doxycycline, call your doctor immediately. Doxycycline can harm the fetus.
plan to avoid unnecessary or prolonged exposure to sunlight and to wear protective clothing, sunglasses, and sunscreen. Doxycycline may make your skin sensitive to sunlight. Tell your doctor right away if you get a sunburn.
you should know that when doxycycline is used during pregnancy or in babies or children up to 8 years of age, it can cause the teeth to become permanently stained. Doxycycline should not be used in children under 8 years of age except for inhalational anthrax, Rocky Mountain spotted fever, or if your doctor decides it is needed.
Doxycycline is a tetracycline antibiotic that inhibits the growth of bacteria by inhibiting the protein synthesis of bacteria. Doxycycline's primary mode of administration is by inhalation through the oral cavity. It may be given by a capillator or spray. Your doctor may have you take doxycycline 2 to 4 times a day as directed by the doctor. Do not take a double dose of doxycycline as prescribed.
How long does it take doxycycline to workIt may take several days of treatment before doxycycline begins to exhibit the desired effects in a clinical study. You should be starting to experience improvement within 4-6 weeks of taking doxycycline. You should be continuing to continue taking doxycycline for at least 6 weeks after completing the course. You should be achieving complete recovery in a short period of time. You should not resume taking doxycycline after completing the course.
by Drugs.com. Last updated on Jun 7, 2025.
Give as directed by your veterinarian. Follow the instructions printed on the prescription label. Store doxycycline at room temperature. Be sure to complete the prescription to ensure a full recovery, even if your pet seems to be improving, unless instructed otherwise by your veterinarian. Allow your pet access to plenty of water. Doxycycline can be given with or without food but should not be given with dairy products.
Keep out of the reach of children and pets. Do not use in animals with a known sensitivity to doxycycline. Do not use in pregnant animals. Let your veterinarian know if your pet is on any other medications, as interactions with certain medicines can occur. Do not administer any calcium-containing medications, antacids, laxatives, or multivitamins within 2 hours of the last doxycycline dose. Notify your veterinarian if your animal suffers from kidney or liver disease. Doxycycline may increase skins sensitivity to sunlight. Store at room temperature. Store protected from light and moisture.
Allergic reactions and serious side effects are rare, but in the case of an allergic reaction or a serious side effect you should stop doxycycline treatment and seek veterinary attention. Some common signs of allergic reactions and serious side effects are hives, breathing difficulty, facial swelling, loss of appetite, or dark colored urine.
Should be stored at room temperature, away from moisture and heat.
Doxycycline should not be used in animals allergic to it or other tetracycline antibiotics. Use with caution in animals with impaired liver or kidney function. Do not use in pregnant, nursing, or growing animals since this medication may cause slowing of bone growth and discoloration of teeth. Give antacids, vitamin and mineral combinations, iron, or Pepto-Bismol at least 1 hour before or 4 hours after giving doxycycline. Use caution when given with digoxin or warfarin. Doxycycline is not affected by food.
Contains Doxycycline:No known side effects. Do not use in milk, but in a larger amount than assumed.
See also:
Generic Name: Erythrityll S329 coll.42Doxycycline derivative
AlliDoxycyclineWhat This Medicine is For | What it Is Used For |
For temporary relief of acne or rosacea which may take 2 to 4 weeks | This medicine can be used at the start of a flare-up of acne or rosacea at the doses prescribed by your veterinarian. It can be used alone or in combination with other medicines. |
It is important to get plenty of rest and not tobig on vomiting, diarrhea, or drinking large amounts of alcohol. | This medicine may help get your body's immune system around regularly and to fight off the infection. |
It can also be used with other medicines to prevent malaria in animals with hay. | This medicine should be used with caution in horses and cats with hay fever. It may help to prevent illness and make it easier for the animals to fight off the infection. |
In medical terms, this medicine contains Doxycycline. Doxycycline is an antibiotic that fights bacteria. It is commonly used to treat a wide variety of bacterial infections. Doxycycline is available as a powder, capsules, and solution.
tell your doctor and pharmacist if you are allergic to doxycycline, minocycline, tetracycline, demeclocycline, any other medications, sulfites, or any of the ingredients in doxycycline capsules, extended-release capsules, tablets, extended-release tablets, or suspension. Ask your pharmacist for a list of the ingredients.
tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, and nutritional supplements you are taking or plan to take. Be sure to mention any of the following: acitretin (Soriatane); anticoagulants ('blood thinners') such as warfarin (Coumadin, Jantoven); barbiturates such as butabarbital (Butisol), phenobarbital, and secobarbital (Seconal); bismuth subsalicylate; carbamazepine (Epitol, Tegretol, others); isotretinoin (Absorica, Amnesteem, Clavaris, Myorisan, Zenatane); penicillin; phenytoin (Dilantin, Phenytek); and proton pump inhibitors such as dexlansoprazole (Dexilant), esomeprazole (Nexium, in Vimovo), lansoprazole (Prevacid, in Prevpac), omeprazole (Prilosec, in Yosprala, Zegerid), pantoprazole (Protonix), and rabeprazole (Aciphex). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
be aware that antacids containing magnesium, aluminum, or calcium, calcium supplements, iron products, and laxatives containing magnesium interfere with doxycycline, making it less effective. Take doxycycline 2 hours before or 6 hours after taking antacids, calcium supplements, and laxatives containing magnesium. Take doxycycline 2 hours before or 4 hours after iron preparations and vitamin products that contain iron.
tell your doctor if you have or have ever had lupus (condition in which the immune system attacks many tissues and organs including the skin, joints, blood, and kidneys), intracranial hypertension (pseudotumor cerebri; high pressure in the skull that may cause headaches, blurry or double vision, vision loss, and other symptoms), a yeast infection in your mouth or vagina, surgery on your stomach, asthma, or kidney or liver disease.
you should know that doxycycline may decrease the effectiveness of hormonal contraceptives (birth control pills, patches, rings, or injections). Talk to your doctor about using another form of birth control.
tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while taking doxycycline, call your doctor immediately. Doxycycline can harm the fetus.
plan to avoid unnecessary or prolonged exposure to sunlight and to wear protective clothing, sunglasses, and sunscreen. Doxycycline may make your skin sensitive to sunlight. Tell your doctor right away if you get a sunburn.
you should know that when doxycycline is used during pregnancy or in babies or children up to 8 years of age, it can cause the teeth to become permanently stained. Doxycycline should not be used in children under 8 years of age except for inhalational anthrax, Rocky Mountain spotted fever, or if your doctor decides it is needed.
Tell your doctor if you are pregnant or plan to become pregnant. Call your doctor immediately if you become pregnant while taking doxycycline, unless your doctor has given you another option.
This medicine is not indicated for women.
This medicine may not be safe for children under 8 years of age for adults.
This medicine may not be safe for children under 8 years of age except for inhalational anthrax, Rocky Mountain spotted fever, or if your doctor has given you another option.
This medicine may not be safe for use in children under 5 years of age except for inhalational anthrax, Rocky Mountain spotted fever, or if your doctor has given you another option.
This medicine may not be safe for use in women or children under 5 years of age except under inhalational anthrax, Rocky Mountain spotted fever, or if your doctor has given you another option.
Stade de France Pharmacy