Pylera

Nausea, diarrhea, upset stomach, abdominal pain, changes in taste, headache, or dizziness may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.

Your tongue may turn dark in color while you are taking this medication. This is harmless, and the effect will disappear when you stop the medication.

Remember that this medication has been prescribed because your doctor 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: numbness/tingling of arms/legs, discolored teeth, mental/mood changes (such as confusion, anxiety, irritability, depression), difficult/painful swallowing, heartburn, fast/pounding heartbeat, ringing in the ears, frequent/painful urination, stiff/painful neck, signs of kidney problems (such as change in the amount of urine), signs of infection (such as a sore throat that doesn't go away, or a fever), easy bruising/bleeding, unusual weakness/tiredness, seizures, chest pain, symptoms of liver disease (such as loss of appetite, severe stomach/abdominal pain, yellowing eyes/skin, dark urine).

This product commonly causes dark stools that are usually not serious. However, you may not be able to tell this effect apart from blood in the stool, which could be a sign of a serious condition. Tell your doctor right away if you have dark stools.

Tetracycline may rarely cause increased pressure around the brain (intracranial hypertension-IH). The risk of this side effect is greater for women of childbearing age who are overweight or who have had IH in the past. If IH develops, it usually goes away after tetracycline is stopped; however, there is a chance of permanent vision loss or blindness. Get medical help right away if you have: headache that is severe or doesn't go away, nausea/vomiting that doesn't stop, vision changes (such as blurred/double vision, decreased vision, sudden blindness).

This medication may rarely cause a severe intestinal condition due to a bacteria called C. difficile. This condition may occur during treatment or weeks to months after treatment has stopped. Tell your doctor right away if you develop: diarrhea that doesn't stop, abdominal or stomach pain/cramping, blood/mucus in your stool.

If you have these symptoms, do not use anti-diarrhea or opioid products because they may make symptoms worse.

This medication may sometimes cause 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: fever, swollen lymph nodes, rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at MedWatch: The FDA Safety Information and Adverse Event Reporting Program.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

See also Side Effects section.

Before taking this product, tell your doctor or pharmacist if you are allergic to bismuth subcitrate, metronidazole, or tetracycline; or to tinidazole; or to other tetracyclines (such as doxycycline); or to other bismuth products (such as bismuth subsalicylate); 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: kidney disease, liver disease, blood disorders, brain/spinal cord disorders (such as seizures), trouble swallowing, esophagus problems (such as hiatal hernia, reflux disease-GERD), a certain rare genetic disorder (Cockayne syndrome).

This product may cause live bacterial vaccines (such as typhoid vaccine) to not work well. Tell your health care professional that you are using this medication before having any immunizations/vaccinations.

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

Tetracycline may make you more sensitive to the sun. Limit your time in the sun. Avoid tanning booths and sunlamps. Use sunscreen and wear protective clothing when outdoors. Tell your doctor right away if you get sunburned or have skin blisters/redness.

Avoid alcoholic beverages and products containing propylene glycol while taking this product and for at least 3 days after finishing this product because severe stomach upset/cramps, nausea, vomiting, headache, and flushing may occur.

This product may make you dizzy. Alcohol or marijuana (cannabis) 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 (cannabis).

Children should not take this product because it contains tetracycline. Tetracycline may cause permanent tooth discoloration and other problems in children younger than 8 years. Tooth discoloration has also occurred in older children and young adults. Consult the doctor for more information.

This product must not be used during pregnancy. It may harm an unborn baby. Discuss the use of reliable forms of birth control (such as condoms, birth control pills) with your doctor. If you become pregnant or think you may be pregnant, tell your doctor right away.

This product contains drugs that may pass into breast milk. Consult your doctor before breast-feeding.

See also How to Use and Precautions sections.

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), atovaquone, digoxin, lithium, lopinavir/ritonavir solution, products containing propylene glycol, retinoid medications (such as acitretin, isotretinoin, tretinoin), strontium.

Do not take this product if you are also taking disulfiram or if you have taken disulfiram within the last 2 weeks.

This product may interfere with certain lab tests, possibly causing false test results. This product may also interfere with X-ray exams of the stomach/intestines. 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. Symptoms of overdose may include: seizures.

Do not share this medication with others.

Lab and/or medical tests may be done while you are taking this medication. Keep all medical and lab appointments. Consult your doctor for more details.

This medication has been prescribed for your current condition only. Do not use it later for another infection unless your doctor tells you to.

If you miss a dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up. Contact your doctor if you miss more than 4 doses.

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. Taking outdated tetracycline can result in serious illness. Consult your pharmacist or local waste disposal company.