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Tinidazole is an antibiotic that is used to treat certain types of vaginal infections (bacterial vaginosis, trichomoniasis). It is also used to treat certain types of parasite infections (giardiasis, amebiasis). It works by stopping the growth of certain bacteria and parasites.
This antibiotic treats only certain bacterial and parasitic infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections.
Take this medication by mouth as directed by your doctor, usually once daily. To prevent stomach upset, take this medication with food. The dosage is based on your medical condition and response to treatment. For children, the dosage is also based on weight.
For the best effect, take this antibiotic at evenly spaced times. To help you remember, take this medication at the same time(s) every day.
Continue to take this medication until the full prescribed amount is finished, even if symptoms disappear after a short time. Stopping the medication too early may result in a return of the infection.
Tell your doctor if your condition lasts or gets worse.
Bitter/metallic taste in your mouth, nausea, stomach upset, diarrhea, or dizziness may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.
This medication may cause your urine to turn darker in color. This effect is harmless and will disappear when the medication is stopped.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if you have any serious side effects, including: signs of a new infection (such as sore throat that doesn't go away, fever), easy bruising/bleeding.
Get medical help right away if you have any very serious side effects, including: unsteadiness, seizures, numbness/tingling of arms/legs.
Use of this medication for prolonged or repeated periods may result in oral thrush or a new yeast infection. Contact your doctor if you notice white patches in your mouth, a change in vaginal discharge, or other new symptoms.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
Before taking tinidazole, tell your doctor or pharmacist if you are allergic to it; or to other antibiotics (such as metronidazole); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease, kidney dialysis, certain blood disorders (low blood cell counts).
Avoid alcoholic beverages and products containing propylene glycol while taking this medication and for at least 3 days after finishing this medicine because severe stomach upset/cramps, nausea, vomiting, headache, and flushing may occur.
This drug may make you dizzy. Alcohol or marijuana can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Talk to your doctor if you are using marijuana.
Tinidazole may cause live bacterial vaccines (such as typhoid vaccine) to not work as well. Do not have any immunizations/vaccinations while using this medication unless your doctor tells you to.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
During pregnancy, this medication should be used only when clearly needed. It is not recommended for use during the first 3 months of pregnancy. Discuss the risks and benefits with your doctor. If you become pregnant or think you may be pregnant, tell your doctor right away.
This drug passes into breast milk and could have undesirable effects on a nursing infant. Breast-feeding is not recommended while using this drug and for at least 3 days after finishing this medicine. Consult your doctor before breast-feeding.
Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
See also Precautions section.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Some products that may interact with this drug include: alcohol-containing products (such as cough and cold syrups, aftershave), products containing propylene glycol, lopinavir/ritonavir solution, lithium.
Do not take tinidazole if you are also taking disulfiram or if you have taken disulfiram within the last 2 weeks.
Although most antibiotics are unlikely to affect hormonal birth control such as pills, patch, or ring, a few antibiotics (such as rifampin, rifabutin) can decrease their effectiveness. This could result in pregnancy. If you use hormonal birth control, ask your doctor or pharmacist for more details.
This medication may interfere with certain lab tests, possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.
If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.
Do not share this medication with others.
If you are being treated for trichomoniasis, all sexual partners may also need to be treated to avoid re-infection. During treatment, avoid sexual intercourse, or always use a latex or polyurethane condom.
This medication has been prescribed for your current condition only. Do not use it later for another infection unless your doctor directs you to do so. A different medication may be necessary in that case.
If you are taking this medication for a longer time, lab tests (such as blood cell counts) may be done while you are taking this medication. Keep all medical and lab appointments. Consult your doctor for more details.