August 24, 2016
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Pylera Capsules

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Pylera Capsules


(bismuth subcitrate potassium, metronidazole, tetracycline hydrochloride) Capsules

PYLERA capsules are a combination antimicrobial product containing bismuth subcitrate potassium, metronidazole, and tetracycline hydrochloride for oral administration. Each size 0 elongated capsule contains:

  • bismuth subcitrate potassium, 140 mg
  • metronidazole, 125 mg
  • smaller capsule (size 3) containing tetracycline hydrochloride, 125 mg

Tetracycline hydrochloride is encapsulated within a smaller capsule to create a barrier to avoid contact with bismuth subcitrate potassium.

Each PYLERA capsule contains the following inactive ingredients: Magnesium Stearate NF, Lactose Monohydrate NF, Talc USP, Gelatin USP, and Titanium Dioxide NF. Printed in red ink.

Bismuth subcitrate potassium is a white or almost white powder. It is a soluble, complex bismuth salt of citric acid. The schematized empirical molecular formula of bismuth subcitrate potassium is Bi (Citrate)2K5•3 H2O. The equivalent theoretical molecular formula is BiC12H14K5O17. The molecular mass of the theoretical molecular formula of a single unit of bismuth subcitrate potassium is 834.71.

Metronidazole is a white to pale yellow crystalline powder. Metronidazole is 2-methyl-5-nitroimidazole-1-ethanol, with a molecular formula of C6H9N3O3 and the following structural formula:

Metronidazole - Structural Formula Illustration

Tetracycline hydrochloride is a yellow, odorless, crystalline powder. Tetracycline hydrochloride is stable in air, but exposure to strong sunlight causes it to darken. Tetracycline hydrochloride is (4S,4aS,5aS,6S,12aS)-4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-penta-hydroxy-6-methyl-1,11-dioxo-2-naphthacenecarboxamide hydrochloride, with a molecular formula of C22H24N2O8•HCl and the following structural formula:

Tetracycline hydrochloride - Structural Formula Illustration

What are the possible side effects of Pylera (Pylera)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • diarrhea that is watery or bloody;
  • neck stiffness, increased sensitivity to light, purple spots on the skin;
  • seizures (convulsions);
  • severe headache, ringing in your ears, dizziness, vision problems, pain behind your eyes;
  • numbness or tingling in your arms and legs; or
  • signs of an infection such as fever, chills, sore throat, flu symptoms,...

Read All Potential Side Effects and See Pictures of Pylera Capsules »

What are the precautions when taking bismuth subcitrate potassium (Pylera Capsules)?

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 other nitroimidazoles (e.g., tinidazole); or to other tetracyclines (e.g., doxycycline); or to other bismuth products (e.g., 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.

This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: kidney disease, liver disease.

Before using this medication, tell your doctor or pharmacist your medical history, especially...

Read All Potential Precautions of Pylera Capsules »

Last reviewed on RxList: 3/21/2016
This monograph has been modified to include the generic and brand name in many instances.

Pylera Capsules - User Reviews

Pylera Capsules User Reviews

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Here is a collection of user reviews for the medication Pylera Capsules sorted by most helpful. Patient Discussions FAQs

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