Skip to main content

Drug Interactions between amobarbital / secobarbital and Rifamate

This report displays the potential drug interactions for the following 2 drugs:

Edit list (add/remove drugs)

Interactions between your drugs

Major

rifAMPin isoniazid

Applies to: Rifamate (isoniazid / rifampin) and Rifamate (isoniazid / rifampin)

Using isoniazid together with rifAMPin can cause serious side effects that may affect your liver. Call your doctor immediately if you experience a fever, chills, joint pain or swelling, excessive tiredness or weakness, unusual bleeding or bruising, skin rash or itching, loss of appetite, nausea, vomiting, or yellowing of the skin or the whites of your eyes. If your doctor does prescribe these medications together, you may need a dose adjustment or special tests to safely take 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.

Switch to professional interaction data

Moderate

isoniazid amobarbital

Applies to: Rifamate (isoniazid / rifampin) and amobarbital / secobarbital

Consumer information for this interaction is not currently available.

MONITOR: Limited clinical data suggest that nonselective monoamine oxidase inhibitors (MAOIs) may enhance or prolong the central nervous system effects of barbiturates. The mechanism of interaction is unknown, but may involve inhibition of barbiturate metabolism by MAOIs. Somnolence, dizziness, ataxia, and semi-consciousness have been reported.

MANAGEMENT: Until more information is available, patients should be monitored for increased barbiturate effects during coadministration with an MAOI or other agents that possess MAOI activity such as furazolidone, linezolid, methylene blue, and procarbazine.

References

  1. Sjoqvist F "Psychotropic drugs (2) interaction between monoamine oxidase (MAO) inhibitors and other substances." Proc R Soc Med 58 (1965): 967-78
  2. Domino EF, Sullivan TS, Luby ED "Barbiturate intoxication in a patient treated with a MAO inhibitor." Am J Psychiatry 118 (1962): 941-3
  3. Darcy PF, Griffin JP "Interactions with drugs used in the treatment of depressive illness." Adverse Drug React Toxicol Rev 14 (1995): 211-31
Moderate

isoniazid secobarbital

Applies to: Rifamate (isoniazid / rifampin) and amobarbital / secobarbital

Consumer information for this interaction is not currently available.

MONITOR: Limited clinical data suggest that nonselective monoamine oxidase inhibitors (MAOIs) may enhance or prolong the central nervous system effects of barbiturates. The mechanism of interaction is unknown, but may involve inhibition of barbiturate metabolism by MAOIs. Somnolence, dizziness, ataxia, and semi-consciousness have been reported.

MANAGEMENT: Until more information is available, patients should be monitored for increased barbiturate effects during coadministration with an MAOI or other agents that possess MAOI activity such as furazolidone, linezolid, methylene blue, and procarbazine.

References

  1. Sjoqvist F "Psychotropic drugs (2) interaction between monoamine oxidase (MAO) inhibitors and other substances." Proc R Soc Med 58 (1965): 967-78
  2. Domino EF, Sullivan TS, Luby ED "Barbiturate intoxication in a patient treated with a MAO inhibitor." Am J Psychiatry 118 (1962): 941-3
  3. Darcy PF, Griffin JP "Interactions with drugs used in the treatment of depressive illness." Adverse Drug React Toxicol Rev 14 (1995): 211-31
Moderate

amobarbital secobarbital

Applies to: amobarbital / secobarbital and amobarbital / secobarbital

Using amobarbital together with secobarbital may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people, especially the elderly, may also experience impairment in thinking, judgment, and motor coordination. You should avoid or limit the use of alcohol while being treated with these medications. Also avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medications affect you. Talk to your doctor 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.

Switch to professional interaction data

Minor

rifAMPin amobarbital

Applies to: Rifamate (isoniazid / rifampin) and amobarbital / secobarbital

Information for this minor interaction is available on the professional version.

Minor

rifAMPin secobarbital

Applies to: Rifamate (isoniazid / rifampin) and amobarbital / secobarbital

Information for this minor interaction is available on the professional version.

Drug and food interactions

Major

amobarbital food

Applies to: amobarbital / secobarbital

Ask your doctor before using amobarbital together with ethanol, this can add to dizziness, drowsiness and other side effects of amobarbital. Be careful if you drive or do activities that require you to be awake and alert. Talk with your doctor before using any medications together, or drinking alcohol with amobarbital. 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.

Switch to professional interaction data

Major

secobarbital food

Applies to: amobarbital / secobarbital

Ask your doctor before using secobarbital together with ethanol, this can add to dizziness, drowsiness and other side effects of secobarbital. Be careful if you drive or do activities that require you to be awake and alert. Talk with your doctor before using any medications together, or drinking alcohol with secobarbital. 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.

Switch to professional interaction data

Moderate

rifAMPin food

Applies to: Rifamate (isoniazid / rifampin)

Consumer information for this interaction is not currently available.

GENERALLY AVOID: Concurrent use of rifampin in patients who ingest alcohol daily may result in an increased incidence of hepatotoxicity. The increase in hepatotoxicity may be due to an additive risk as both alcohol and rifampin are individually associated with this adverse reaction. However, the exact mechanism has not been established.

ADJUST DOSING INTERVAL: Administration with food may reduce oral rifampin absorption, increasing the risk of therapeutic failure or resistance. In a randomized, four-period crossover phase I study of 14 healthy male and female volunteers, the pharmacokinetics of single dose rifampin 600 mg were evaluated under fasting conditions and with a high-fat meal. Researchers observed that administration of rifampin with a high-fat meal reduced rifampin peak plasma concentration (Cmax) by 36%, nearly doubled the time to reach peak plasma concentration (Tmax) but reduced overall exposure (AUC) by only 6%.

MANAGEMENT: The manufacturer of oral forms of rifampin recommends administration on an empty stomach, 30 minutes before or 2 hours after meals. Patients should be encouraged to avoid alcohol or strictly limit their intake. Patients who use alcohol and rifampin concurrently or have a history of alcohol use disorder may require additional monitoring of their liver function during treatment with rifampin.

References

  1. "Product Information. Rifampin (rifAMPin)." Akorn Inc (2022):
  2. "Product Information. Rifampicin (rifampicin)." Mylan Pharmaceuticals Inc (2022):
  3. "Product Information. Rifadin (rifampicin)." Sanofi (2023):
  4. "Product Information. Rifadin (rifaMPICin)." Sanofi-Aventis Australia Pty Ltd (2024):
  5. Peloquin CA, Namdar R, Singleton MD, Nix DE "Pharmacokinetics of rifampin under fasting conditions, with food, and with antacids https://pubmed.ncbi.nlm.nih.gov/9925057/" (2024):
  6. "Product Information. Rofact (rifampin)." Bausch Health, Canada Inc. (2019):
View all 6 references
Moderate

isoniazid food

Applies to: Rifamate (isoniazid / rifampin)

Food decreases the levels of isoniazid in your body. Take isoniazid on an empty stomach at least 1 hour before or 2 hours after a meal. This will make it easier for your body to absorb the medication. If nausea occurs, ask your doctor if you can take isoniazid with food. Avoid alcohol while taking isoniazid. Alcohol may increase the risk of damage to the liver during isoniazid treatment. Alcohol can also cause isoniazid side effects to get worse. Contact your doctor if you experience flushing, chills, headache, nausea, vomiting, and diarrhea.

Switch to professional interaction data

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.


Report options

Loading...
QR code containing a link to this page

Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor 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.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Check Interactions

To view an interaction report containing 4 (or more) medications, please sign in or create an account.

Save Interactions List

Sign in to your account to save this drug interaction list.

Save Interactions List

Save to My Med List

Add your drug list to My Med List to view medical information in a simple, easy-to-read, personalized format. Automatically receive FDA alerts, drug interaction warnings, plus data on food, allergy & condition interactions.