Drug Interactions between bismuth subsalicylate / metronidazole / tetracycline and methotrexate
This report displays the potential drug interactions for the following 2 drugs:
- bismuth subsalicylate/metronidazole/tetracycline
- methotrexate
Interactions between your drugs
methotrexate bismuth subsalicylate
Applies to: methotrexate and bismuth subsalicylate / metronidazole / tetracycline
Bismuth subsalicylate may increase the blood levels and side effects of methotrexate. You may be more likely to experience this interaction if you have kidney disease or are receiving a high dose of methotrexate. The risk may be less if you are using methotrexate once a week to treat certain forms of arthritis. Depending on your situation, you may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. Contact your doctor immediately if you develop symptoms of potentially serious side effects of methotrexate such as mouth ulcers or sores; vomiting; diarrhea; rash; loss of appetite; joint pain or swelling; yellow discoloration of skin and eyes; dark urine; shortness of breath; dry cough; paleness; dizziness or fainting; unusual bruising or bleeding; seizures; infection; and flu-like symptoms (fever, chills, body aches, sore throat, muscle weakness). It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
tetracycline methotrexate
Applies to: bismuth subsalicylate / metronidazole / tetracycline and methotrexate
Before using tetracycline, tell your doctor if you also use methotrexate. Tetracycline may increase or decrease the blood levels and side effects of methotrexate. Contact your doctor right away if you develop flu-like symptoms (fever, chills, body aches, sore throat, muscle weakness), any other signs of infection, pale skin, easy bruising or bleeding, diarrhea, or mouth sores. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
tetracycline bismuth subsalicylate
Applies to: bismuth subsalicylate / metronidazole / tetracycline and bismuth subsalicylate / metronidazole / tetracycline
Using bismuth subsalicylate together with tetracycline may decrease the effects of tetracycline. Administration of tetracycline and bismuth subsalicylate should be separated by two to three hours. If your doctor does prescribe these medications together, you may need a dose adjustment or special test to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Drug and food interactions
metroNIDAZOLE food
Applies to: bismuth subsalicylate / metronidazole / tetracycline
Consumption of alcoholic beverages or products containing alcohol or propylene glycol during treatment with metroNIDAZOLE is not recommended. Doing so may occasionally trigger a reaction in some patients similar to the disulfiram reaction, which includes unpleasant effects such as flushing, throbbing in head and neck, throbbing headache, difficulty breathing, nausea, vomiting, sweating, thirst, chest pain, rapid heartbeat, palpitation, low blood pressure, dizziness, lightheadedness, blurred vision, and confusion. Rarely, more severe reactions may include abnormal heart rhythm, heart attack, heart failure, unconsciousness, convulsions, and even death. Patients treated with metroNIDAZOLE should continue to avoid using any products containing alcohol or propylene glycol for at least 3 days until after completion of therapy. Talk to your doctor or pharmacist if you have questions on how to take this or other medications you are prescribed. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
tetracycline food
Applies to: bismuth subsalicylate / metronidazole / tetracycline
Do not take iron supplements, multivitamins, calcium supplements, antacids, or laxatives within 2 hours before or after taking tetracycline. These products can make tetracycline less effective in treating your infection. Do not take tetracycline with milk or other dairy products, unless your doctor has told you to. Dairy products can make it harder for your body to absorb the medication.
methotrexate food
Applies to: methotrexate
Caffeine may reduce the effectiveness of methotrexate in the treatment of arthritis. If you are receiving methotrexate for arthritis, you may want to limit your intake of caffeine-containing foods and medications. Check with your doctor or pharmacist if you have concerns or are uncertain what products may contain caffeine.
methotrexate food
Applies to: methotrexate
Methotrexate may cause liver problems, and using it with other medications that can also affect the liver such as ethanol (alcohol) may increase that risk. You should avoid or limit the use of alcohol while being treated with these medications. Call your doctor immediately if you have fever, chills, joint pain or swelling, unusual bleeding or bruising, skin rash, itching, loss of appetite, fatigue, nausea, vomiting, abdominal pain, dark urine, pale stools, and/or yellowing of the skin or eyes, as these may be signs and symptoms of liver damage. Talk to your doctor or pharmacist if you have any questions or concerns. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
tetracycline food
Applies to: bismuth subsalicylate / metronidazole / tetracycline
Iron can bind to tetracycline in the gastrointestinal tract, which may prevent their absorption into the bloodstream and possibly reduce their effectiveness. To avoid or minimize the interaction, iron-containing medications and tetracycline should preferably be taken at least three to four hours apart in most cases. Talk to your doctor if you have any questions or concerns, or if you have trouble separating the dosing times. Your doctor may be able to prescribe alternatives that do not interact. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
methotrexate food
Applies to: methotrexate
Caffeine may reduce the effectiveness of methotrexate in the treatment of arthritis. If you are receiving methotrexate for arthritis, you may want to limit your intake of caffeine-containing foods and products. Contact your doctor if your symptoms worsen or your condition changes during treatment with these medications. Your doctor may be able to prescribe alternatives that do not interact. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Therapeutic duplication warnings
No warnings were found for your selected drugs.
Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.
See also
Drug Interaction Classification
Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. | |
No interaction information available. |
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
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