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Interactions between Compro and Magaldrate

1 drug interaction and 30 additional warnings found for the following 2 drugs:

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Drug interactions

Minor drug interactions

Minor:

prochlorperazine magaldrate

Applies to: Compro (prochlorperazine) and magaldrate

Coadministration with aluminum- or magnesium-containing antacids may decrease the serum concentrations of orally administered phenothiazines. The proposed mechanism is antacid adsorption resulting in reduced phenothiazine bioavailability. The interaction has been reported for chlorpromazine but may occur with other phenothiazines. In a study of ten patients treated with chlorpromazine, 30 mL of an antacid containing aluminum and magnesium hydroxide reduced the urinary excretion of chlorpromazine by 10% to 45%. In another study with six psychiatric patients, coadministration of chlorpromazine oral suspension with 30 mL of an antacid containing aluminum hydroxide and magnesium trisilicate resulted in a 20% reduction in serum chlorpromazine level two hours later. The clinical significance is unknown. Psychiatric relapse occurred in a chlorpromazine-treated patient following the addition of antacid therapy according to a single case report. Separating the times of administration by 2 to 3 hours may help if an interaction is suspected.

References (5)
  1. Fann WE (1973) "Interactions of psychotropic drugs in the elderly." Postgrad Med, 53, p. 182-6
  2. Romankiewicz JA (1976) "Effects of antacids on gastrointestinal absorption of drugs." Prim Care, 3, p. 537-50
  3. Forrest FM, Forrest IS, Serra MT (1970) "Modification of chlorpromazine metabolism by some other drugs frequently administered to psychiatric patients." Biol Psychiatry, 2, p. 53-8
  4. Fann WE, Davis JM, Janowsky DS, Sekerke HJ, Schmidt DM (1973) "Chlorpromazine: effects of antacids on its gastrointestinal absorption." J Clin Pharmacol, 13, p. 388-90
  5. Covington TR, eds., Lawson LC, Young LL (1993) "Handbook of Nonprescription Drugs." Washington, DC: American Pharmaceutical Association

Food/lifestyle interactions

Moderate food/lifestyle interactions

Moderate:

prochlorperazine Alcohol (Ethanol)

Applies to: Compro (prochlorperazine)
Generally avoid

Concurrent use of ethanol and phenothiazines may result in additive CNS depression and psychomotor impairment. Also, ethanol may precipitate dystonic reactions in patients who are taking phenothiazines. The two drugs probably act on different sites in the brain, although the exact mechanism of the interaction is not known.

Management

Patients should be advised to avoid alcohol during phenothiazine therapy.

References (2)
  1. Lutz EG (1976) "Neuroleptic-induced akathisia and dystonia triggered by alcohol." JAMA, 236, p. 2422-3
  2. Freed E (1981) "Alcohol-triggered-neuroleptic-induced tremor, rigidity and dystonia." Med J Aust, 2, p. 44-5

Disease interactions

29 potential interactions Applies to: 28 conditions, including High Blood Pressure, Seizures, Diarrhea, Arrhythmia, and Breast Cancer.

Acute Alcohol Intoxication

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Acute Alcohol Intoxication.

Phenothiazines are contraindicated in the presence of large amounts of central nervous system depressants such as alcohol. The risk of suicide and the danger of overdose may be increased in patients who use alcohol excessively. Phenothiazines should be used with caution in patients experiencing alcohol withdrawal.

Alcoholism

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Alcoholism.

Phenothiazines are contraindicated in the presence of large amounts of central nervous system depressants such as alcohol. The risk of suicide and the danger of overdose may be increased in patients who use alcohol excessively. Phenothiazines should be used with caution in patients experiencing alcohol withdrawal.

Altered Consciousness

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Altered Consciousness.

The use of phenothiazines is contraindicated in comatose patients and patients with severe central nervous system depression. Phenothiazines may potentiate the CNS and respiratory depression in these patients.

Arrhythmia

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Arrhythmia.

Phenothiazines may cause hypotension. Patients with pheochromocytoma, cerebral vascular or renal insufficiency, cardiovascular disease, or a severe cardiac reserve deficiency (e.g., mitral insufficiency) may be more prone to hypotensive reactions. Close monitoring is recommended during treatment if used in at-risk patients; some products may be contraindicated (e.g., thioridazine). Large doses and parenteral administration should be used cautiously, or avoided, in patients with impaired cardiovascular systems.

Bone Marrow Depression/Low Blood Counts

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Bone Marrow Depression/Low Blood Counts.

Phenothiazines may cause hematologic toxicity. In patients with preexisting blood dyscrasias, bone marrow suppression, or a history of drug-induced leukopenia or neutropenia, phenothiazines should not be used or are contraindicated. Complete blood counts should be regularly monitored in patients with risk factors for blood dyscrasias. If white blood cell counts indicate cellular depression, discontinue treatment and institute appropriate therapy.

Breast Cancer

Moderate:

Compro

The prochlorperazine in Compro has a moderate potential interaction with Breast Cancer.

The chronic use of phenothiazines is associated with persistent elevations in prolactin levels. The clinical significance in patients with a history of breast cancer is unknown and should be considered prior to therapy; approximately one-third of human breast cancers are thought to be prolactin-dependent. Chronic administration of neuroleptic drugs has been associated with mammary tumorigenesis in animal studies; however, evidence is inconclusive in humans.

Cardiovascular Conditions and Disorders

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Cardiovascular Conditions and Disorders.

Phenothiazines may cause hypotension. Patients with pheochromocytoma, cerebral vascular or renal insufficiency, cardiovascular disease, or a severe cardiac reserve deficiency (e.g., mitral insufficiency) may be more prone to hypotensive reactions. Close monitoring is recommended during treatment if used in at-risk patients; some products may be contraindicated (e.g., thioridazine). Large doses and parenteral administration should be used cautiously, or avoided, in patients with impaired cardiovascular systems.

Central Nervous System Disorders

Moderate:

Compro

The prochlorperazine in Compro has a moderate potential interaction with Central Nervous System Disorders.

Phenothiazines can lower the seizure threshold. Caution is recommended during administration in patients with a history of convulsive disorders or EEG abnormalities. Anticonvulsant therapy should be maintained or adequately adjusted during phenothiazine treatment.

Cerebrovascular Insufficiency

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Cerebrovascular Insufficiency.

Phenothiazines may cause hypotension. Patients with pheochromocytoma, cerebral vascular or renal insufficiency, cardiovascular disease, or a severe cardiac reserve deficiency (e.g., mitral insufficiency) may be more prone to hypotensive reactions. Close monitoring is recommended during treatment if used in at-risk patients; some products may be contraindicated (e.g., thioridazine). Large doses and parenteral administration should be used cautiously, or avoided, in patients with impaired cardiovascular systems.

Dehydration

Moderate:

Compro

The prochlorperazine in Compro has a moderate potential interaction with Dehydration.

Prochlorperazine may cause acute, dose-related neuromuscular reactions, particularly dystonia. Therapy with prochlorperazine should be administered cautiously in patients (especially children) with acute illness such as children chickenpox, CNS infections, measles, gastroenteritis, or with dehydration as they may be more susceptible to dystonic reactions. Close monitoring is recommended.

Dementia

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Dementia.

Antipsychotic drugs are not approved for the treatment of patients with dementia-related psychosis. Older patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death; although the causes were varied, most of the deaths appeared to be either cardiovascular (e.g., heart failure, sudden death) or infectious (e.g., pneumonia) in nature. A causal relationship with antipsychotic use has not been established. In controlled trials in older patients with dementia-related psychosis, patients randomized to risperidone, aripiprazole, and olanzapine had higher incidence of cerebrovascular adverse events (e.g., stroke, transient ischemic attack), including fatalities, compared to patients treated with placebo.

Diarrhea

Moderate:

magaldrate

Magaldrate has a moderate potential interaction with Diarrhea.

The use of magnesium-containing antacids has been associated with a laxative effect and may cause diarrhea. Therapy with magnesium-containing antacids should be administered cautiously in patients with diarrhea.

Glaucoma/Intraocular Hypertension

Moderate:

Compro

The prochlorperazine in Compro has a moderate potential interaction with Glaucoma/Intraocular Hypertension.

Phenothiazines have anticholinergic activity, which may cause mydriasis. Caution is recommended in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as glaucoma. Older patients may be particularly sensitive.

High Blood Pressure

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with High Blood Pressure.

Phenothiazines may cause hypotension. Patients with pheochromocytoma, cerebral vascular or renal insufficiency, cardiovascular disease, or a severe cardiac reserve deficiency (e.g., mitral insufficiency) may be more prone to hypotensive reactions. Close monitoring is recommended during treatment if used in at-risk patients; some products may be contraindicated (e.g., thioridazine). Large doses and parenteral administration should be used cautiously, or avoided, in patients with impaired cardiovascular systems.

History - Cerebrovascular Disease

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with History - Cerebrovascular Disease.

Phenothiazines may cause hypotension. Patients with pheochromocytoma, cerebral vascular or renal insufficiency, cardiovascular disease, or a severe cardiac reserve deficiency (e.g., mitral insufficiency) may be more prone to hypotensive reactions. Close monitoring is recommended during treatment if used in at-risk patients; some products may be contraindicated (e.g., thioridazine). Large doses and parenteral administration should be used cautiously, or avoided, in patients with impaired cardiovascular systems.

History - Myocardial Infarction

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with History - Myocardial Infarction.

Phenothiazines may cause hypotension. Patients with pheochromocytoma, cerebral vascular or renal insufficiency, cardiovascular disease, or a severe cardiac reserve deficiency (e.g., mitral insufficiency) may be more prone to hypotensive reactions. Close monitoring is recommended during treatment if used in at-risk patients; some products may be contraindicated (e.g., thioridazine). Large doses and parenteral administration should be used cautiously, or avoided, in patients with impaired cardiovascular systems.

Hypotension

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Hypotension.

Phenothiazines may cause hypotension. Patients with pheochromocytoma, cerebral vascular or renal insufficiency, cardiovascular disease, or a severe cardiac reserve deficiency (e.g., mitral insufficiency) may be more prone to hypotensive reactions. Close monitoring is recommended during treatment if used in at-risk patients; some products may be contraindicated (e.g., thioridazine). Large doses and parenteral administration should be used cautiously, or avoided, in patients with impaired cardiovascular systems.

Infection

Moderate:

Compro

The prochlorperazine in Compro has a moderate potential interaction with Infection.

Prochlorperazine may cause acute, dose-related neuromuscular reactions, particularly dystonia. Therapy with prochlorperazine should be administered cautiously in patients (especially children) with acute illness such as children chickenpox, CNS infections, measles, gastroenteritis, or with dehydration as they may be more susceptible to dystonic reactions. Close monitoring is recommended.

Intestinal Obstruction

Major:

magaldrate

Magaldrate has a major potential interaction with Intestinal Obstruction.

Aluminum containing antacids may produce constipation, which may lead to intestinal obstruction. Osteomalacia and hypophosphatemia may be produced in patients with renal dysfunction who are not receiving dialysis. Patients with renal dysfunction, intestinal obstruction, osteomalacia, or hypophosphatemia should use antacids with low or no aluminum content.

Liver Disease

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Liver Disease.

Therapy with phenothiazines should be administered cautiously or are contraindicated in patients with preexisting liver disease or with a history of jaundice due to phenothiazine hypersensitivity. Patients with a history of hepatic encephalopathy due to cirrhosis may have increased sensitivity to the central nervous system effects of some phenothiazines (e.g., chlorpromazine). Treatment should be discontinued if jaundice occurs.

Neuroleptic Malignant Syndrome

Moderate:

Compro

The prochlorperazine in Compro has a moderate potential interaction with Neuroleptic Malignant Syndrome.

Therapy with phenothiazines may precipitate or aggravate a potentially fatal symptom complex known as neuroleptic malignant syndrome (NMS). Treatment should not be initiated in patients with active NMS, and should be immediately discontinued if currently administered in such patients. In patients with a history of NMS, introduction or reintroduction of phenothiazines should be carefully considered, since NMS may recur.

Pheochromocytoma

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Pheochromocytoma.

Phenothiazines may cause hypotension. Patients with pheochromocytoma, cerebral vascular or renal insufficiency, cardiovascular disease, or a severe cardiac reserve deficiency (e.g., mitral insufficiency) may be more prone to hypotensive reactions. Close monitoring is recommended during treatment if used in at-risk patients; some products may be contraindicated (e.g., thioridazine). Large doses and parenteral administration should be used cautiously, or avoided, in patients with impaired cardiovascular systems.

Phosphate Imbalance

Major:

magaldrate

Magaldrate has a major potential interaction with Phosphate Imbalance.

Aluminum containing antacids may produce constipation, which may lead to intestinal obstruction. Osteomalacia and hypophosphatemia may be produced in patients with renal dysfunction who are not receiving dialysis. Patients with renal dysfunction, intestinal obstruction, osteomalacia, or hypophosphatemia should use antacids with low or no aluminum content.

Pulmonary Impairment

Moderate:

Compro

The prochlorperazine in Compro has a moderate potential interaction with Pulmonary Impairment.

Phenothiazines may suppress the cough reflex and central nervous system. Caution is recommended when using phenothiazines in patients with chronic respiratory disorders, including severe asthma, emphysema, or acute respiratory tract infections.

Renal Dysfunction

Major:

magaldrate

Magaldrate has a major potential interaction with Renal Dysfunction.

Aluminum containing antacids may produce constipation, which may lead to intestinal obstruction. Osteomalacia and hypophosphatemia may be produced in patients with renal dysfunction who are not receiving dialysis. Patients with renal dysfunction, intestinal obstruction, osteomalacia, or hypophosphatemia should use antacids with low or no aluminum content.

Major:

magaldrate

Magaldrate has a major potential interaction with Renal Dysfunction.

Magnesium is eliminated by the kidney. The serum concentration of magnesium is increased in patients with renal impairment. Magnesium toxicity includes CNS depression, muscular paralysis, respiratory depression, hypotension and prolonged cardiac conduction time. Disappearance of the patellar reflex is a useful clinical sign of magnesium intoxication. Therapy with magnesium should be administered cautiously and dosages should be modified in patients with compromised renal function. Clinical monitoring of serum magnesium levels is recommended.

Respiratory Arrest

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Respiratory Arrest.

The use of phenothiazines is contraindicated in comatose patients and patients with severe central nervous system depression. Phenothiazines may potentiate the CNS and respiratory depression in these patients.

Seizures

Moderate:

Compro

The prochlorperazine in Compro has a moderate potential interaction with Seizures.

Phenothiazines can lower the seizure threshold. Caution is recommended during administration in patients with a history of convulsive disorders or EEG abnormalities. Anticonvulsant therapy should be maintained or adequately adjusted during phenothiazine treatment.

Valvular Heart Disease

Major:

Compro

The prochlorperazine in Compro has a major potential interaction with Valvular Heart Disease.

Phenothiazines may cause hypotension. Patients with pheochromocytoma, cerebral vascular or renal insufficiency, cardiovascular disease, or a severe cardiac reserve deficiency (e.g., mitral insufficiency) may be more prone to hypotensive reactions. Close monitoring is recommended during treatment if used in at-risk patients; some products may be contraindicated (e.g., thioridazine). Large doses and parenteral administration should be used cautiously, or avoided, in patients with impaired cardiovascular systems.

More resources

Compro

A total of 710 drugs are known to interact with Compro.

magaldrate

A total of 236 drugs are known to interact with magaldrate.

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.