Interactions between Isocarboxazid and Novahistine

Isocarboxazid has a major potential interaction with Alcoholism.

The use of monoamine oxidase inhibitors with alcohol or any other CNS depressants is contraindicated.

Isocarboxazid has a moderate potential interaction with Angina.

Monoamine oxidase inhibitors may have the capacity to suppress anginal pain that would otherwise serve as a warning of myocardial ischemia. Caution is advised in patients with a history of angina or risk of myocardial infarction.

The chlorpheniramine in Novahistine has a moderate potential interaction with Asthma.

It has been suggested that the anticholinergic effect of antihistamines may reduce the volume and cause thickening of bronchial secretions, resulting in obstruction of respiratory tract. Some manufacturers and clinicians recommend that therapy with antihistamines be administered cautiously in patients with asthma or chronic obstructive pulmonary disease.

The phenylephrine in Novahistine has a moderate potential interaction with Benign Prostatic Hyperplasia.

Sympathomimetic agents may cause or worsen urinary difficulty in patients with prostate enlargement due to smooth muscle contraction in the bladder neck via stimulation of alpha-1 adrenergic receptors. Therapy with sympathomimetic agents should be administered cautiously in patients with hypertrophy or neoplasm of the prostate.

Isocarboxazid has a moderate potential interaction with Bipolar Disorder.

A major depressive episode can be the initial presentation of bipolar disorder. Patients with depressive symptoms should be adequately screened to determine if they are at risk for bipolar disorder prior to initiating treatment with a monoamine oxidase inhibitor (MAOI). This screening should include a detailed psychiatric history, including a family history of suicide, bipolar disorder, and depression. It should be noted that MAOIs antidepressants are not approved for use in treating bipolar depression.

Isocarboxazid has a moderate potential interaction with Bipolar Disorder.

Monoamine oxidase inhibitor (MAOI) antidepressants may cause excessive stimulation in hyperactive or schizophrenic patients. Symptoms of psychosis may be aggravated in schizophrenia, particularly that with paranoid symptomatology. Depressed patients, usually those with bipolar disorder, may experience a switch from depression to mania or hypomania. Therapy with MAOI antidepressants should be administered cautiously in patients with hyperactive or hyperexcitable personalities, schizophrenia or bipolar disorder.

Isocarboxazid has a major potential interaction with Carcinoid Syndrome.

The use of nonspecific monoamine oxidase inhibitors (MAOIs) is contraindicated in patients with carcinoid syndrome. Nonspecific MAOIs inhibit the breakdown of pressor amines, including serotonin, and may exacerbate symptoms of the syndrome.

Isocarboxazid has a major potential interaction with Cardiovascular Conditions and Disorders.

The use of monoamine oxidase inhibitor (MAOI) antidepressants is contraindicated in patients with cerebrovascular or cardiovascular disease, including hypertension and congestive heart failure. Nonspecific MAOIs inhibit the breakdown of pressor amines, the accumulation of which can precipitate hypertensive crises. Intracranial hemorrhage and death have resulted in some cases. MAOI antidepressants are also commonly associated with dose-related orthostatic hypotension, which occurs most frequently in patients with preexisting hypertension but may be minimized with slow, gradual titration. Blood pressure should be monitored closely in all patients who receive MAOI therapy, and patients should be advised to stop taking the medication and seek medical attention immediately if signs and symptoms of a hypertensive reaction occur (e.g., occipital headache which may radiate frontally; palpitation; neck stiffness or soreness; nausea or vomiting; perspiration associated with fever or cold, clammy skin; mydriasis; photophobia; constricting chest pain).

Isocarboxazid has a major potential interaction with Cardiovascular Conditions and Disorders.

The use of most monoamine oxidase inhibitors (MAOIs) is contraindicated in patients with diagnosed cardiovascular disease, hypertension, or confirmed or suspected cerebrovascular disorders. These drugs can cause hypertensive crises, which sometimes can be fatal, and are characterized by occipital headache, palpitations, neck stiffness or soreness, nausea, sweating, dilated pupils and photophobia. Intracranial bleeding has been reported in some cases in association with the increase in blood pressure.

Normotensive patients receiving therapy with MAOIs need to have monitored their blood pressure frequently to detect any evidence of pressor response and treatment should be discontinued immediately if blood pressure increases or the patient reports symptoms such a headaches or palpitations. Additionally, patients should be advised to avoid foods and drinks with high tyramine content such as cheese, sour cream, beer, liver, bananas and others, as these might trigger an hypertensive crisis.

The phenylephrine in Novahistine has a major potential interaction with Cardiovascular Conditions and Disorders.

Sympathomimetic agents may cause adverse cardiovascular effects, particularly when used in high dosages and/or in susceptible patients. In cardiac tissues, these agents may produce positive chronotropic and inotropic effects via stimulation of beta- 1 adrenergic receptors. Cardiac output, oxygen consumption, and the work of the heart may be increased. In the peripheral vasculature, vasoconstriction may occur via stimulation of alpha-1 adrenergic receptors. Palpitations, tachycardia, arrhythmia, hypertension, reflex bradycardia, coronary occlusion, cerebral vasculitis, myocardial infarction, cardiac arrest, and death have been reported. Some of these agents, particularly ephedra alkaloids (ephedrine, ma huang, phenylpropanolamine), may also predispose patients to hemorrhagic and ischemic stroke. Therapy with sympathomimetic agents should generally be avoided or administered cautiously in patients with sensitivity to sympathomimetic amines, hyperthyroidism, or underlying cardiovascular or cerebrovascular disorders. These agents should not be used in patients with severe coronary artery disease or severe/uncontrolled hypertension.

The chlorpheniramine in Novahistine has a moderate potential interaction with Cardiovascular Conditions and Disorders.

Antihistamines may infrequently cause cardiovascular adverse effects related to their anticholinergic and local anesthetic (quinidine-like) activities. Tachycardia, palpitation, ECG changes, arrhythmias, hypotension, and hypertension have been reported. Although these effects are uncommon and usually limited to overdosage situations, the manufacturers and some clinicians recommend that therapy with antihistamines be administered cautiously in patients with cardiovascular disease, hypertension, and/or hyperthyroidism.

Isocarboxazid has a major potential interaction with Cerebral Vascular Disorder.

The use of monoamine oxidase inhibitor (MAOI) antidepressants is contraindicated in patients with cerebrovascular or cardiovascular disease, including hypertension and congestive heart failure. Nonspecific MAOIs inhibit the breakdown of pressor amines, the accumulation of which can precipitate hypertensive crises. Intracranial hemorrhage and death have resulted in some cases. MAOI antidepressants are also commonly associated with dose-related orthostatic hypotension, which occurs most frequently in patients with preexisting hypertension but may be minimized with slow, gradual titration. Blood pressure should be monitored closely in all patients who receive MAOI therapy, and patients should be advised to stop taking the medication and seek medical attention immediately if signs and symptoms of a hypertensive reaction occur (e.g., occipital headache which may radiate frontally; palpitation; neck stiffness or soreness; nausea or vomiting; perspiration associated with fever or cold, clammy skin; mydriasis; photophobia; constricting chest pain).

Isocarboxazid has a major potential interaction with Cerebral Vascular Disorder.

The use of most monoamine oxidase inhibitors (MAOIs) is contraindicated in patients with diagnosed cardiovascular disease, hypertension, or confirmed or suspected cerebrovascular disorders. These drugs can cause hypertensive crises, which sometimes can be fatal, and are characterized by occipital headache, palpitations, neck stiffness or soreness, nausea, sweating, dilated pupils and photophobia. Intracranial bleeding has been reported in some cases in association with the increase in blood pressure.

Normotensive patients receiving therapy with MAOIs need to have monitored their blood pressure frequently to detect any evidence of pressor response and treatment should be discontinued immediately if blood pressure increases or the patient reports symptoms such a headaches or palpitations. Additionally, patients should be advised to avoid foods and drinks with high tyramine content such as cheese, sour cream, beer, liver, bananas and others, as these might trigger an hypertensive crisis.

The phenylephrine in Novahistine has a major potential interaction with Cerebrovascular Insufficiency.

Sympathomimetic agents may cause adverse cardiovascular effects, particularly when used in high dosages and/or in susceptible patients. In cardiac tissues, these agents may produce positive chronotropic and inotropic effects via stimulation of beta- 1 adrenergic receptors. Cardiac output, oxygen consumption, and the work of the heart may be increased. In the peripheral vasculature, vasoconstriction may occur via stimulation of alpha-1 adrenergic receptors. Palpitations, tachycardia, arrhythmia, hypertension, reflex bradycardia, coronary occlusion, cerebral vasculitis, myocardial infarction, cardiac arrest, and death have been reported. Some of these agents, particularly ephedra alkaloids (ephedrine, ma huang, phenylpropanolamine), may also predispose patients to hemorrhagic and ischemic stroke. Therapy with sympathomimetic agents should generally be avoided or administered cautiously in patients with sensitivity to sympathomimetic amines, hyperthyroidism, or underlying cardiovascular or cerebrovascular disorders. These agents should not be used in patients with severe coronary artery disease or severe/uncontrolled hypertension.

The chlorpheniramine in Novahistine has a moderate potential interaction with COPD.

It has been suggested that the anticholinergic effect of antihistamines may reduce the volume and cause thickening of bronchial secretions, resulting in obstruction of respiratory tract. Some manufacturers and clinicians recommend that therapy with antihistamines be administered cautiously in patients with asthma or chronic obstructive pulmonary disease.

Isocarboxazid has a moderate potential interaction with Diabetes Mellitus.

There is conflicting evidence regarding whether monoamine oxidase inhibitors (MAOIs) affect glucose metabolism or potentiate oral hypoglycemic agents. Therapy with MAOIs should be administered cautiously in patients with diabetes.

Isocarboxazid has a moderate potential interaction with Diabetes Mellitus.

Monoamine oxidase inhibitors can increase the sensitivity to insulin, and have contributed to hypoglycemic episodes in patients with diabetes. Caution should be used when prescribing in diabetic patients.

The phenylephrine in Novahistine has a moderate potential interaction with Diabetes Mellitus.

Sympathomimetic agents may cause increases in blood glucose concentrations. These effects are usually transient and slight but may be significant with dosages higher than those normally recommended. Therapy with sympathomimetic agents should be administered cautiously in patients with diabetes mellitus. Closer monitoring of blood glucose concentrations may be appropriate.

The chlorpheniramine in Novahistine has a moderate potential interaction with Gastrointestinal Obstruction.

Antihistamines often have anticholinergic activity, to which elderly patients are particularly sensitive. Therapy with antihistamines should be administered cautiously, if at all, in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders. Conventional, first-generation antihistamines such as the ethanolamines (bromodiphenhydramine, carbinoxamine, clemastine, dimenhydrinate, diphenhydramine, doxylamine, phenyltoloxamine) tend to exhibit substantial anticholinergic effects. In contrast, the newer, relatively nonsedating antihistamines (e.g., cetirizine, fexofenadine, loratadine) reportedly have low to minimal anticholinergic activity at normally recommended dosages and may be appropriate alternatives.

The phenylephrine in Novahistine has a moderate potential interaction with Glaucoma/Intraocular Hypertension.

Sympathomimetic agents can induce transient mydriasis via stimulation of alpha-1 adrenergic receptors. In patients with anatomically narrow angles or narrow-angle glaucoma, pupillary dilation can provoke an acute attack. In patients with other forms of glaucoma, mydriasis may occasionally increase intraocular pressure. Therapy with sympathomimetic agents should be administered cautiously in patients with or predisposed to glaucoma, particularly narrow-angle glaucoma.

The chlorpheniramine in Novahistine has a moderate potential interaction with Glaucoma/Intraocular Hypertension.

Antihistamines often have anticholinergic activity, to which elderly patients are particularly sensitive. Therapy with antihistamines should be administered cautiously, if at all, in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders. Conventional, first-generation antihistamines such as the ethanolamines (bromodiphenhydramine, carbinoxamine, clemastine, dimenhydrinate, diphenhydramine, doxylamine, phenyltoloxamine) tend to exhibit substantial anticholinergic effects. In contrast, the newer, relatively nonsedating antihistamines (e.g., cetirizine, fexofenadine, loratadine) reportedly have low to minimal anticholinergic activity at normally recommended dosages and may be appropriate alternatives.

Isocarboxazid has a major potential interaction with Headache.

The use of monoamine oxidase inhibitor (MAOI) antidepressants is contraindicated in patients with a history of headaches. Nonspecific MAOIs inhibit the breakdown of pressor amines, the accumulation of which can precipitate hypertensive crises. Intracranial hemorrhage and death have resulted in some cases. Since headache may often be the first symptom of a hypertensive reaction during MAOI therapy, use of these agents is not recommended in patients who experience frequent or severe headaches. MAOIs should be withdrawn promptly if headaches develop during treatment.

Isocarboxazid has a moderate potential interaction with Heart Attack.

Monoamine oxidase inhibitors may have the capacity to suppress anginal pain that would otherwise serve as a warning of myocardial ischemia. Caution is advised in patients with a history of angina or risk of myocardial infarction.

Isocarboxazid has a major potential interaction with Heart Failure.

The use of most monoamine oxidase inhibitors (MAOIs) is contraindicated in patients with diagnosed cardiovascular disease, hypertension, or confirmed or suspected cerebrovascular disorders. These drugs can cause hypertensive crises, which sometimes can be fatal, and are characterized by occipital headache, palpitations, neck stiffness or soreness, nausea, sweating, dilated pupils and photophobia. Intracranial bleeding has been reported in some cases in association with the increase in blood pressure.

Normotensive patients receiving therapy with MAOIs need to have monitored their blood pressure frequently to detect any evidence of pressor response and treatment should be discontinued immediately if blood pressure increases or the patient reports symptoms such a headaches or palpitations. Additionally, patients should be advised to avoid foods and drinks with high tyramine content such as cheese, sour cream, beer, liver, bananas and others, as these might trigger an hypertensive crisis.

Isocarboxazid has a major potential interaction with Hyperthyroidism.

Nonspecific monoamine oxidase inhibitors (MAOIs) inhibit the breakdown of pressor amines, the accumulation of which can precipitate hypertensive crises. Intracranial hemorrhage and death have resulted in some cases. Therapy with nonspecific MAOIs should be administered cautiously in patients with hyperthyroidism, since these patients have an increased sensitivity to pressor amines. Blood pressure should be monitored closely during therapy, and patients should be advised to stop taking the medication and seek medical attention immediately if signs and symptoms of a hypertensive reaction occur (e.g., occipital headache which may radiate frontally; palpitation; neck stiffness or soreness; nausea or vomiting; perspiration associated with fever or cold, clammy skin; mydriasis; photophobia; constricting chest pain).

The phenylephrine in Novahistine has a major potential interaction with Hyperthyroidism.

Sympathomimetic agents may cause adverse cardiovascular effects, particularly when used in high dosages and/or in susceptible patients. In cardiac tissues, these agents may produce positive chronotropic and inotropic effects via stimulation of beta- 1 adrenergic receptors. Cardiac output, oxygen consumption, and the work of the heart may be increased. In the peripheral vasculature, vasoconstriction may occur via stimulation of alpha-1 adrenergic receptors. Palpitations, tachycardia, arrhythmia, hypertension, reflex bradycardia, coronary occlusion, cerebral vasculitis, myocardial infarction, cardiac arrest, and death have been reported. Some of these agents, particularly ephedra alkaloids (ephedrine, ma huang, phenylpropanolamine), may also predispose patients to hemorrhagic and ischemic stroke. Therapy with sympathomimetic agents should generally be avoided or administered cautiously in patients with sensitivity to sympathomimetic amines, hyperthyroidism, or underlying cardiovascular or cerebrovascular disorders. These agents should not be used in patients with severe coronary artery disease or severe/uncontrolled hypertension.

Isocarboxazid has a moderate potential interaction with Hyperthyroidism.

Isocarboxazid should be used with caution in hyperthyroid patients because of their increased sensitivity to pressor amines.

The chlorpheniramine in Novahistine has a moderate potential interaction with Hyperthyroidism.

Antihistamines may infrequently cause cardiovascular adverse effects related to their anticholinergic and local anesthetic (quinidine-like) activities. Tachycardia, palpitation, ECG changes, arrhythmias, hypotension, and hypertension have been reported. Although these effects are uncommon and usually limited to overdosage situations, the manufacturers and some clinicians recommend that therapy with antihistamines be administered cautiously in patients with cardiovascular disease, hypertension, and/or hyperthyroidism.

Isocarboxazid has a major potential interaction with Hypotension.

The use of monoamine oxidase inhibitor (MAOI) antidepressants is contraindicated in patients with cerebrovascular or cardiovascular disease, including hypertension and congestive heart failure. Nonspecific MAOIs inhibit the breakdown of pressor amines, the accumulation of which can precipitate hypertensive crises. Intracranial hemorrhage and death have resulted in some cases. MAOI antidepressants are also commonly associated with dose-related orthostatic hypotension, which occurs most frequently in patients with preexisting hypertension but may be minimized with slow, gradual titration. Blood pressure should be monitored closely in all patients who receive MAOI therapy, and patients should be advised to stop taking the medication and seek medical attention immediately if signs and symptoms of a hypertensive reaction occur (e.g., occipital headache which may radiate frontally; palpitation; neck stiffness or soreness; nausea or vomiting; perspiration associated with fever or cold, clammy skin; mydriasis; photophobia; constricting chest pain).

Isocarboxazid has a moderate potential interaction with Hypotension.

Hypotension has been observed during therapy with monoamine oxidase inhibitors. These drugs should be used with caution, especially in patients with tendency towards hypotension or taking other drugs known to cause hypotension.

The chlorpheniramine in Novahistine has a moderate potential interaction with Hypotension.

Antihistamines may infrequently cause cardiovascular adverse effects related to their anticholinergic and local anesthetic (quinidine-like) activities. Tachycardia, palpitation, ECG changes, arrhythmias, hypotension, and hypertension have been reported. Although these effects are uncommon and usually limited to overdosage situations, the manufacturers and some clinicians recommend that therapy with antihistamines be administered cautiously in patients with cardiovascular disease, hypertension, and/or hyperthyroidism.

Isocarboxazid has a major potential interaction with Liver Disease.

The use of monoamine oxidase inhibitors is contraindicated in patients with a history of liver disease or in those with abnormal liver function tests.

Isocarboxazid has a major potential interaction with Liver Disease.

The use of monoamine oxidase inhibitor (MAOI) antidepressants is contraindicated in patients with abnormal liver function tests or a history of liver disease. A low incidence of altered liver function or hepatocellular jaundice has been reported in association with the use of MAOI antidepressants. Periodic monitoring of liver function tests is recommended during prolonged and/or high-dose therapy.

Isocarboxazid has a moderate potential interaction with Liver Disease.

There has been a low incidence of altered liver function and jaundice in patients receiving isocarboxazid. This drug should be used with caution in patients with any history of liver disease. Periodic liver chemistry tests should be performed during therapy and the use of the drug should be discontinued at the fist sign of hepatic dysfunction or jaundice.

The chlorpheniramine in Novahistine has a moderate potential interaction with Liver Disease.

Limited pharmacokinetic data are available for the older, first-generation antihistamines. Many appear to be primarily metabolized by the liver, and both parent drugs and metabolites are excreted in the urine. Patients with renal and/or liver disease may be at greater risk for adverse effects from antihistamines due to drug and metabolite accumulation. Therapy with antihistamines should be administered cautiously in such patients. Lower initial dosages may be appropriate.

Isocarboxazid has a moderate potential interaction with Mania.

Monoamine oxidase inhibitor (MAOI) antidepressants may cause excessive stimulation in hyperactive or schizophrenic patients. Symptoms of psychosis may be aggravated in schizophrenia, particularly that with paranoid symptomatology. Depressed patients, usually those with bipolar disorder, may experience a switch from depression to mania or hypomania. Therapy with MAOI antidepressants should be administered cautiously in patients with hyperactive or hyperexcitable personalities, schizophrenia or bipolar disorder.

Isocarboxazid has a moderate potential interaction with Mania.

Some monoamine oxidase inhibitors such as isocarboxazid and phenelzine, should be used cautiously in hyperactive and agitated patients, as well as schizophrenic patients, as these may cause excessive stimulation. Additionally, activation of mania/hypomania has been reported in a small portion of patients with major affective disorders.

Isocarboxazid has a moderate potential interaction with Parkinsonism.

Nonspecific monoamine oxidase inhibitors (MAOIs) may increase the frequency and severity of signs and symptoms associated with parkinsonian syndrome. Therapy with nonspecific MAOIs should be administered cautiously in patients with this disorder.

Isocarboxazid has a major potential interaction with Pheochromocytoma.

The use of most monoamine oxidase inhibitors (MAOIs) is contraindicated in patients with pheochromocytoma, as such tumors secrete pressor substances whose metabolism may be inhibited by these drugs.

Isocarboxazid has a major potential interaction with Pheochromocytoma.

The use of nonspecific monoamine oxidase inhibitors (MAOIs) is contraindicated in patients with pheochromocytoma or other tumors of the adrenal medulla, such as some neuroblastomas, that secrete pressor substances. Nonspecific MAOIs inhibit the breakdown of pressor amines, the accumulation of which can precipitate hypertensive crises. Intracranial hemorrhage and death have resulted in some cases.

The phenylephrine in Novahistine has a major potential interaction with Pheochromocytoma.

Sympathomimetic agents may cause adverse cardiovascular effects, particularly when used in high dosages and/or in susceptible patients. In cardiac tissues, these agents may produce positive chronotropic and inotropic effects via stimulation of beta- 1 adrenergic receptors. Cardiac output, oxygen consumption, and the work of the heart may be increased. In the peripheral vasculature, vasoconstriction may occur via stimulation of alpha-1 adrenergic receptors. Palpitations, tachycardia, arrhythmia, hypertension, reflex bradycardia, coronary occlusion, cerebral vasculitis, myocardial infarction, cardiac arrest, and death have been reported. Some of these agents, particularly ephedra alkaloids (ephedrine, ma huang, phenylpropanolamine), may also predispose patients to hemorrhagic and ischemic stroke. Therapy with sympathomimetic agents should generally be avoided or administered cautiously in patients with sensitivity to sympathomimetic amines, hyperthyroidism, or underlying cardiovascular or cerebrovascular disorders. These agents should not be used in patients with severe coronary artery disease or severe/uncontrolled hypertension.

The phenylephrine in Novahistine has a moderate potential interaction with Prostate Tumor, Benign.

Sympathomimetic agents may cause or worsen urinary difficulty in patients with prostate enlargement due to smooth muscle contraction in the bladder neck via stimulation of alpha-1 adrenergic receptors. Therapy with sympathomimetic agents should be administered cautiously in patients with hypertrophy or neoplasm of the prostate.

Isocarboxazid has a major potential interaction with Renal Dysfunction.

The use of some monoamine oxidase inhibitors such as isocarboxazid and phenelzine, is contraindicated in patients with severe renal impairment.

Isocarboxazid has a major potential interaction with Renal Dysfunction.

The use of monoamine oxidase inhibitor (MAOI) antidepressants is contraindicated in patients with severe renal dysfunction. These drugs may accumulate in plasma when renal function is impaired.

Isocarboxazid has a moderate potential interaction with Renal Dysfunction.

Monoamine oxidase inhibitors should be used with caution in patients with renal impairment as there is a possibility of cumulative effects in such patients. Dose selection should be cautious, usually starting at the low end of the dosing range.

The chlorpheniramine in Novahistine has a moderate potential interaction with Renal Dysfunction.

Limited pharmacokinetic data are available for the older, first-generation antihistamines. Many appear to be primarily metabolized by the liver, and both parent drugs and metabolites are excreted in the urine. Patients with renal and/or liver disease may be at greater risk for adverse effects from antihistamines due to drug and metabolite accumulation. Therapy with antihistamines should be administered cautiously in such patients. Lower initial dosages may be appropriate.

Isocarboxazid has a moderate potential interaction with Schizophrenia.

Monoamine oxidase inhibitor (MAOI) antidepressants may cause excessive stimulation in hyperactive or schizophrenic patients. Symptoms of psychosis may be aggravated in schizophrenia, particularly that with paranoid symptomatology. Depressed patients, usually those with bipolar disorder, may experience a switch from depression to mania or hypomania. Therapy with MAOI antidepressants should be administered cautiously in patients with hyperactive or hyperexcitable personalities, schizophrenia or bipolar disorder.

Isocarboxazid has a moderate potential interaction with Schizophrenia.

Some monoamine oxidase inhibitors such as isocarboxazid and phenelzine, should be used cautiously in hyperactive and agitated patients, as well as schizophrenic patients, as these may cause excessive stimulation. Additionally, activation of mania/hypomania has been reported in a small portion of patients with major affective disorders.

Isocarboxazid has a moderate potential interaction with Seizures.

Monoamine oxidase inhibitors have shown a variable effect on the convulsive threshold. Caution should be used when treating patients with epilepsy.

Isocarboxazid has a moderate potential interaction with Seizures.

Monoamine oxidase inhibitor (MAOI) antidepressants may have variable effects on seizure threshold. Decreased seizure frequency as well as increased frequency have been reported. Therapy with MAOI antidepressants should be administered cautiously in patients with a history of seizures.

The chlorpheniramine in Novahistine has a moderate potential interaction with Urinary Retention.

Antihistamines often have anticholinergic activity, to which elderly patients are particularly sensitive. Therapy with antihistamines should be administered cautiously, if at all, in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders. Conventional, first-generation antihistamines such as the ethanolamines (bromodiphenhydramine, carbinoxamine, clemastine, dimenhydrinate, diphenhydramine, doxylamine, phenyltoloxamine) tend to exhibit substantial anticholinergic effects. In contrast, the newer, relatively nonsedating antihistamines (e.g., cetirizine, fexofenadine, loratadine) reportedly have low to minimal anticholinergic activity at normally recommended dosages and may be appropriate alternatives.