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Drug Interactions between isoniazid and Oreticyl 50

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

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Interactions between your drugs

Moderate

isoniazid deserpidine

Applies to: isoniazid and Oreticyl 50 (deserpidine / hydrochlorothiazide)

Consumer information for this interaction is not currently available.

GENERALLY AVOID: The addition of a rauwolfia alkaloid to existing monoamine oxidase inhibitor (MAOI) therapy may result in profound excitation and/or a hypertensive reaction. The proposed mechanism is increased norepinephrine levels at adrenergic receptors due to both the inhibition of catecholamine metabolism by MAOIs and the release of catecholamines induced by rauwolfia alkaloids. Theoretically, this interaction should not occur if rauwolfia alkaloid therapy is initiated several days before the start of MAOI therapy. However, clinical data are limited.

MANAGEMENT: In general, rauwolfia alkaloids should not be administered to patients treated with MAOIs or other agents that possess MAOI activity (e.g., furazolidone, linezolid, methylene blue, procarbazine). At least 14 days should elapse between discontinuation of MAOI therapy and initiation of treatment with rauwolfia alkaloids.

References

  1. Pettinger WA, Soyangco FG, Oates JA "Inhibition of monoamine oxidase in man by furazolidone." Clin Pharmacol Ther 9 (1968): 442-7
  2. Schulz R, Antonin KH, Hoffmann E, et al. "Tyramine kinetics and pressor sensitivity during monoamine oxidase inhibition by selegiline." Clin Pharmacol Ther 46 (1989): 528-36
  3. Goldberg LI "Monoamine oxidase inhibitors: adverse reactions and possible mechanisms." JAMA 190 (1964): 456-62
  4. Sherman GP, Walton CA "Adrenergic transmission and drug interaction." J Am Pharm Assoc 15 (1975): 86-90
  5. De Vita VT, Hahn MA, Oliverio VT "Monoamine oxidase inhibition by a new carcinostatic agent, n-isopropyl-a-(2-methylhydrazino)-p-toluamide (MIH). (30590)." Proc Soc Exp Biol Med 120 (1965): 561-5
View all 5 references
Moderate

hydroCHLOROthiazide deserpidine

Applies to: Oreticyl 50 (deserpidine / hydrochlorothiazide) and Oreticyl 50 (deserpidine / hydrochlorothiazide)

Before taking hydroCHLOROthiazide, tell your doctor if you also use deserpidine. You may need dose adjustments or special tests in order to safely take both medications together. The blood pressure lowering effects of this combination may be additive. You should take deserpidine at bedtime and to notify your doctor if have dizziness or feel faint. 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.

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Drug and food interactions

Moderate

isoniazid food

Applies to: isoniazid

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.

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Moderate

hydroCHLOROthiazide food

Applies to: Oreticyl 50 (deserpidine / hydrochlorothiazide)

HydroCHLOROthiazide and ethanol may have additive effects in lowering your blood pressure. You may experience headache, dizziness, lightheadedness, fainting, and/or changes in pulse or heart rate. These side effects are most likely to be seen at the beginning of treatment, following a dose increase, or when treatment is restarted after an interruption. Let your doctor know if you develop these symptoms and they do not go away after a few days or they become troublesome. Avoid driving or operating hazardous machinery until you know how the medications affect you, and use caution when getting up from a sitting or lying position. 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.

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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.

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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.

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