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</div><div><span>Bismuth, Metronidazole, and Tetracycline</span></div></div><span class="page-url print-only">URL of this page: https://medlineplus.gov/druginfo/meds/a601028.html</span><!-- Article --><article><div class="page-info"><div class="page-title"><a name="start" id="start">
</a><h1 class="with-also">Bismuth, Metronidazole, and Tetracycline</h1><span class="alsocalled" id="d-pronunciation">pronounced as (biz' muth) (me troe ni' da zole) (tet ra sye' kleen)
</span>
</div><div class="page-actions">
</div>
<noscript><span class="js-disabled-message">To use the sharing features on this page, please enable JavaScript.</span></noscript></div><div id="toc-box"><ul role="navigation" class="group"><li><a href="#why">Why is this medication prescribed?</a>
</li><li><a href="#how">How should this medicine be used?</a>
</li><li><a href="#other-uses">Other uses for this medicine</a>
</li><li><a href="#precautions">What special precautions should I follow?</a>
</li><li><a href="#if-i-forget">What should I do if I forget a dose?</a>
</li><li><a href="#side-effects">What side effects can this medication cause?</a>
</li><li><a href="#storage-conditions">What should I know about storage and disposal of this medication?</a>
</li><li><a href="#overdose">In case of emergency/overdose</a>
</li><li><a href="#other-information">What other information should I know?</a>
</li><li><a href="#brand-name-1">Brand names</a>
</li></ul></div><section><div id="boxed-warning" class="section"><div class="section-header"><div class="section-title"><h2>IMPORTANT WARNING: </h2></div><div class="section-button"><button type="submit" aria-controls="section-warning" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-warning"><p>Metronidazole can cause cancer in laboratory animals. However, it can be useful when taken to heal ulcers. Talk to your doctor about the risks and benefits of using this combination containing metronidazole in the treatment of your ulcers.</p></div></div></section><section><div id="why" class="section"><div class="section-header"><div class="section-title"><h2>Why is this medication prescribed?</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>Bismuth, metronidazole, and tetracycline is used along with other ulcer medications to treat duodenal ulcers. It is in a class of medications called antibacterial agents. It works by preventing the growth and spread of Helicobacter pylori bacteria, which often occurs with ulcers. Treating this infection keeps ulcers from coming back.</p></div></div></section><section><div id="how" class="section"><div class="section-header"><div class="section-title"><h2>How should this medicine be used?</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>Bismuth, metronidazole, and tetracycline (Helidac) comes as two chewable bismuth tablets, one metronidazole tablet, and one tetracycline capsule to take together by mouth. Bismuth, metronidazole, and tetracycline (Pylera) come as a capsule to take by mouth. It usually is taken four times a day, at meals and at bedtime for 10 days (Pylera) or 14 days (Helidac). Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take this medication exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.</p><p>If you are taking bismuth, metronidazole, and tetracycline (Helidac), chew and swallow the bismuth tablets. Swallow the metronidazole tablet and tetracycline capsule whole with a full glass of water (8 ounces [240 milliliters]). If you are taking bismuth, metronidazole, and tetracycline (Pylera), swallow the capsules whole with a full glass of water (8 ounces [240 milliliters]). It is especially important to take the bedtime dose with plenty of fluid to prevent irritation of your throat and stomach.</p><p>Take bismuth, metronidazole, and tetracycline at least 1 hour before or 2 hours after you eat or drink foods that contain calcium, such as dairy products and calcium-fortified juices and foods.</p><p>Continue to take this medication even if you feel well. Do not stop taking it without talking to your doctor. If you stop taking this medication too soon or skip doses, your infection may not be completely treated and the bacteria may become resistant to antibiotics.</p><p>Ask your pharmacist or doctor for a copy of the manufacturer's information for the patient.</p></div></div></section><section><div id="other-uses" class="section"><div class="section-header"><div class="section-title"><h2>Other uses for this medicine</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.</p></div></div></section><section><div id="precautions" class="section"><div class="section-header"><div class="section-title"><h2>What special precautions should I follow?</h2></div><div class="section-button"><button type="submit" aria-controls="section-precautions" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-precautions"><h3>Before taking bismuth, metronidazole, and tetracycline,</h3><ul><li>tell your doctor and pharmacist if you are allergic to bismuth, metronidazole (Flagyl), aspirin or salicylates, doxycycline (Doryx, Vibramycin), minocycline (Dynacin, Minocin), tetracycline (Sumycin), tinidazole (Tindamax), any other medications, or any of the ingredients in bismuth, metronidazole, and tetracycline combination. Ask your pharmacist for a list of the ingredients.</li><li>Tell your doctor or pharmacist if you are taking the following medications or have stopped taking them within the past two weeks: disulfiram (Antabuse).</li><li>Some medications should not be taken with bismuth, metronidazole, and tetracycline. Other medications may cause dosing changes or extra monitoring when taken with bismuth, metronidazole, and tetracycline. Make sure you have discussed any medications you are currently taking or plan to take before starting bismuth, metronidazole, and tetracycline with your doctor and pharmacist. Before starting, stopping, or changing any medications while taking bismuth, metronidazole, and tetracycline, please get the advice of your doctor or pharmacist.</li><li>The following nonprescription products may interact with bismuth, metronidazole, and tetracycline: cimetidine (Tagamet); aspirin or aspirin containing products; omeprazole (Prilosec); antacids containing aluminum calcium, magnesium, iron, zinc, or sodium bicarbonate. Be sure to let your doctor and pharmacist know that you are taking these medications before you start taking bismuth, metronidazole, and tetracycline. Do not start any of these medications while taking bismuth, metronidazole, and tetracycline without discussing with your healthcare provider.</li><li>if you are taking antacids containing aluminum, calcium, magnesium or sodium bicarbonate, or zinc supplements, take them 1 to 2 hours before or 1 to 2 hours after bismuth, metronidazole, and tetracycline. If you are taking iron supplements, take them 3 hours before or 2 hours after bismuth, metronidazole, and tetracycline.</li><li>tell your doctor if you have kidney or liver disease. Your doctor may tell you not to take this medication.</li><li>tell your doctor if you have an infection or if you have or have ever had blood problems, Crohn's disease, or central nervous system conditions.</li><li>tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking this medication, call your doctor. Tetracycline can cause birth defects and may harm nursing babies.</li><li>you should know that this medication may decrease the effectiveness of hormonal contraceptives (birth control pills, patches, rings, implants, injections, and intrauterine devices). Use another form of birth control while you are taking this medication. Talk to your doctor about types of birth control that will work for you during and after your treatment with bismuth, metronidazole, and tetracycline.</li><li>remember not to drink alcoholic beverages or take products with alcohol or propylene glycol while taking this medication and for at least 3 days after treatment is finished. Alcohol and propylene glycol may cause nausea, vomiting, stomach cramps, headache, sweating, and flushing (redness of the face) when taken during treatment with metronidazole.</li><li>plan to avoid unnecessary or prolonged exposure to sunlight or ultraviolet light (tanning beds and sun lamps) and to wear protective clothing, sunglasses, and sunscreen. This medication may make your skin sensitive to sunlight.</li><li>you should know that when tetracycline is taken during pregnancy or by babies or children up to age 8, it can cause the teeth to become permanently stained and to not form properly. It may also keep bones from developing properly. Tetracycline should not be taken by children under age 8.</li></ul></div></div></section><section><div id="if-i-forget" class="section"><div class="section-header"><div class="section-title"><h2>What should I do if I forget a dose?</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>Skip the missed dose and continue your regular dosing schedule until all of the medication is gone. Do not take a double dose to make up for a missed one. If you miss more than four doses, call your doctor.</p></div></div></section><section><div id="side-effects" class="section"><div class="section-header"><div class="section-title"><h2>What side effects can this medication cause?</h2></div><div class="section-button"><button type="submit" aria-controls="section-side-effects" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-side-effects"><h3>Bismuth, metronidazole, and tetracycline may cause side effects. Darkening of the tongue and stool is temporary and harmless. Tell your doctor if any of these symptoms are severe or do not go away:
</h3><ul><li>weakness</li><li>diarrhea</li><li>constipation</li><li>dark urine</li><li>loss of appetite</li><li>stomach pain</li><li>heartburn</li><li>metallic taste in the mouth</li><li>dry or sore mouth</li></ul><h3>If you have any of the following symptoms, stop taking this medication and call your doctor immediately:
</h3><ul><li>numbness, pain, burning, or tingling in your hands or feet</li><li>headache</li><li>blurred vision</li><li>seizures</li><li>dizziness</li><li>difficulty speaking</li><li>problems with coordination</li><li>confusion or agitation</li><li>ringing in the ears</li><li>vaginal itching and/or discharge</li><li>fever, cough, sore throat, chills, or other signs of infection</li><li>bloody or tarry stools</li><li>nausea</li><li>vomiting</li><li>hives</li><li>rash</li><li>itching</li></ul><p>If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online (<a target="_blank" href="https://www.fda.gov/Safety/MedWatch">https://www.fda.gov/Safety/MedWatch</a>) or by phone (1-800-332-1088).</p></div></div></section><section><div id="storage-conditions" class="section"><div class="section-header"><div class="section-title"><h2>What should I know about storage and disposal of this medication?</h2></div><div class="section-button"><button type="submit" aria-controls="section-7" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-7"><p>Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom).</p><p>Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. Talk to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in your community. See the FDA's Safe Disposal of Medicines website (<a target="_blank" href="https://goo.gl/c4Rm4p">https://goo.gl/c4Rm4p</a>) for more information if you do not have access to a take-back program.</p><p>It is important to keep all medication out of sight and reach of children as many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location one that is up and away and out of their sight and reach. <a target="_blank" href="https://www.upandaway.org">https://www.upandaway.org</a></p></div></div></section><section><div id="overdose" class="section"><div class="section-header"><div class="section-title"><h2>In case of emergency/overdose</h2></div><div class="section-button"><button type="submit" aria-controls="section-8" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-8"><p>In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online at <a target="_blank" href="https://www.poisonhelp.org/help">https://www.poisonhelp.org/help</a>. If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at 911.</p><h3>Symptoms of overdose may include:
</h3><ul><li>nausea</li><li>vomiting</li><li>diarrhea</li><li>ringing in the ears</li><li>high fever</li><li>lack of energy</li><li>fast heart rate</li><li>confusion</li><li>seizure</li><li>shortness of breath</li><li>fast breathing</li><li>problems with coordination</li><li>pain, burning, or tingling in the hands or feet</li></ul></div></div></section><section><div id="other-information" class="section"><div class="section-header"><div class="section-title"><h2>What other information should I know?</h2></div><div class="section-button"><button type="submit" aria-controls="section-9" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-9"><p>Keep all appointments with your doctor and the laboratory. Your doctor may order certain lab tests to check your response to this medication.</p><p>Before having any laboratory test, tell your doctor and the laboratory personnel that you are taking this medication.</p><p>Do not let anyone else take your medication. Your prescription is probably not refillable. If you still have symptoms of an ulcer after you finish this medication, call your doctor.</p><p>It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.</p></div></div></section><section><div id="brand-name-1" class="section"><div class="section-header"><div class="section-title"><h2>Brand names</h2></div><div class="section-button"><button type="submit" aria-controls="section-brandname-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-brandname-1"><ul><li>Helidac<sup>®</sup></li><li>Pylera<sup>®</sup></li></ul></div></div></section><span>Last Revised - </span><span>12/15/2023</span>
</p>
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