Interactions between Mintox Tablets and Pimavanserin
1 drug interaction and 19 additional warnings found for the following 2 drugs:
- Mintox Tablets (aluminum hydroxide/magnesium hydroxide)
- pimavanserin
Drug interactions
Moderate drug interactions
Moderate:
magnesium hydroxide pimavanserin
Applies to: Mintox Tablets (aluminum hydroxide / magnesium hydroxide) and pimavanserin
Monitor
Bowel cleansing as well as overuse of certain laxatives may cause electrolyte loss and increase the risk of torsade de pointes ventricular arrhythmia in patients treated with drugs that prolong the QT interval. Electrolyte disturbances including hypokalemia and hypomagnesemia have been reported with laxative abuse and are known risk factors for torsade de pointes associated with QT interval prolongation.
Management
Patients treated with drugs that prolong the QT interval should exercise caution when self-medicating with laxatives. The recommended dosage and duration of use should not be exceeded. Patients treated with lactulose for more than six months should be monitored periodically for electrolyte imbalance. Patients should be advised to seek prompt medical attention if they experience symptoms that could indicate the occurrence of torsade de pointes such as dizziness, lightheadedness, fainting, palpitation, irregular heart rhythm, shortness of breath, or syncope.
References (4)
- Chin RL (1998) "Laxative-induced hypokalemia." Ann Emerg Med, 32, p. 517-8
- Muller-Lissner SA (1993) "Adverse effects of laxatives: fact and fiction." Pharmacology, 47, p. 138-45
- Canadian Pharmacists Association (2006) e-CPS. http://www.pharmacists.ca/function/Subscriptions/ecps.cfm?link=eCPS_quikLink
- Schaefer DC, Cheskin LJ (1998) "Constipation in the elderly." Am Fam Physician, 58, p. 907-14
Food/lifestyle interactions
Major food/lifestyle interactions
Major:
aluminum hydroxide Food/Lifestyle
Applies to: Mintox Tablets (aluminum hydroxide / magnesium hydroxide)
Generally avoid
The concomitant administration of aluminum-containing products (e.g., antacids and phosphate binders) and citrates may significantly increase serum aluminum concentrations, resulting in toxicity. Citrates or citric acid are contained in numerous soft drinks, citrus fruits, juices, and effervescent and dispersible drug formulations. Citrates enhance the gastrointestinal absorption of aluminum by an unknown mechanism, which may involve the formation of a soluble aluminum-citrate complex. Various studies have reported that citrate increases aluminum absorption by 4.6- to 50-fold in healthy subjects. Patients with renal insufficiency are particularly at risk of developing hyperaluminemia and encephalopathy. Fatalities have been reported. Patients with renal failure or on hemodialysis may also be at risk from soft drinks and effervescent and dispersible drug formulations that contain citrates or citric acid. It is unknown what effect citrus fruits or juices would have on aluminum absorption in healthy patients.
Management
The concomitant use of aluminum- and citrate-containing products and foods should be avoided by renally impaired patients. Hemodialysis patients should especially be cautioned about effervescent and dispersible over-the-counter remedies and soft drinks. Some experts also recommend that healthy patients should separate doses of aluminum-containing antacids and citrates by 2 to 3 hours.
Adjust dosing interval
The administration of aluminum-containing antacids with enteral nutrition may result in precipitation, formation of bezoars, and obstruction of feeding tubes. The proposed mechanism is the formation of an insoluble complex between the aluminum and the protein in the enteral feeding. Several cases of esophageal plugs and nasogastric tube obstructions have been reported in patients receiving high-protein liquids and an aluminum hydroxide-magnesium hydroxide antacid or an aluminum hydroxide antacid.
Management
Some experts recommend that antacids should not be mixed with or given after high protein formulations, that the antacid dose should be separated from the feeding by as much as possible, and that the tube should be thoroughly flushed before administration.
References (2)
- Cerner Multum, Inc. "UK Summary of Product Characteristics."
- Wohlt PD, Zheng L, Gunderson S, Balzar SA, Johnson BD, Fish JT (2009) "Recommendations for the use of medications with continuous enteral nutrition." Am J Health Syst Pharm, 66, p. 1438-67
Disease interactions
18 potential interactions Applies to: 16 conditions, including Weight Loss, Arrhythmia, Breast Cancer, Hypokalemia, and Dementia.
Alcoholism
Moderate:
pimavanserin
Pimavanserin has a moderate potential interaction with Alcoholism.
Antipsychotic and neuroleptic drugs can lower the seizure threshold and trigger seizures in a dose-dependent manner. This risk is greatest in patients with a history of seizures or with conditions that lower the seizure threshold. Therapy with these drugs should be administered cautiously in patients with a history of seizures or other predisposing factors, such as head trauma, CNS abnormalities, and alcoholism.
Arrhythmia
Major:
pimavanserin
Pimavanserin has a major potential interaction with Arrhythmia.
Pimavanserin prolongs the QT interval and should be avoided in patients with known QT prolongation or in patients taking other drugs known to prolong QT interval (class 1A and class 3 antiarrhythmics, certain antipsychotics, and some antibiotics). Pimavanserin should also be avoided in patients with cardiac arrhythmias and other circumstances that might increase the risk of the occurrence of Torsade de Pointes and/or sudden death, including symptomatic bradycardia, hypokalemia or hypomagnesemia.
Breast Cancer
Moderate:
pimavanserin
Pimavanserin has a moderate potential interaction with Breast Cancer.
The chronic use of neuroleptic agents can cause persistent elevations in prolactin levels due to antagonism of dopamine D2 receptors. Based on in vitro data, approximately one-third of human breast cancers are thought to be prolactin-dependent. The clinical significance of this observation with respect to long-term neuroleptic therapy is unknown. Chronic administration of neuroleptic drugs has been associated with mammary tumorigenesis in rodent studies but not in human clinical or epidemiologic studies. Until further data are available, therapy with neuroleptic agents should be administered cautiously in patients with a previously detected breast cancer. Caution is also advised in patients with preexisting hyperprolactinemia. Hyperprolactinemia may suppress hypothalamic gonadotrophin releasing hormone (GnRH), resulting in reduced pituitary gonadotropin secretion. This, in turn, may inhibit reproductive function by impairing gonadal steroidogenesis in both female and male patients. Galactorrhea, amenorrhea, gynecomastia, and impotence have been reported in patients receiving prolactin-elevating compounds; however, the clinical significance of elevated serum prolactin levels is unknown for most patients. Long-standing hyperprolactinemia when associated with hypogonadism may lead to decreased bone density in both female and male patients.
Dementia
Major:
pimavanserin
Pimavanserin 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.
Gastrointestinal Obstruction
Major:
Mintox Tablets
The magnesium hydroxide in Mintox Tablets has a major potential interaction with Gastrointestinal Obstruction.
The use of laxatives is contraindicated in patients with intestinal obstruction disorders. Patients with intestinal obstruction disorders may need their underlying condition treated to correct the constipation. Some laxatives require reduction in the colon to their active form to be effective which may be a problem in patients with intestinal obstruction.
Hyperprolactinemia
Moderate:
pimavanserin
Pimavanserin has a moderate potential interaction with Hyperprolactinemia.
The chronic use of neuroleptic agents can cause persistent elevations in prolactin levels due to antagonism of dopamine D2 receptors. Based on in vitro data, approximately one-third of human breast cancers are thought to be prolactin-dependent. The clinical significance of this observation with respect to long-term neuroleptic therapy is unknown. Chronic administration of neuroleptic drugs has been associated with mammary tumorigenesis in rodent studies but not in human clinical or epidemiologic studies. Until further data are available, therapy with neuroleptic agents should be administered cautiously in patients with a previously detected breast cancer. Caution is also advised in patients with preexisting hyperprolactinemia. Hyperprolactinemia may suppress hypothalamic gonadotrophin releasing hormone (GnRH), resulting in reduced pituitary gonadotropin secretion. This, in turn, may inhibit reproductive function by impairing gonadal steroidogenesis in both female and male patients. Galactorrhea, amenorrhea, gynecomastia, and impotence have been reported in patients receiving prolactin-elevating compounds; however, the clinical significance of elevated serum prolactin levels is unknown for most patients. Long-standing hyperprolactinemia when associated with hypogonadism may lead to decreased bone density in both female and male patients.
Hypokalemia
Major:
pimavanserin
Pimavanserin has a major potential interaction with Hypokalemia.
Pimavanserin prolongs the QT interval and should be avoided in patients with known QT prolongation or in patients taking other drugs known to prolong QT interval (class 1A and class 3 antiarrhythmics, certain antipsychotics, and some antibiotics). Pimavanserin should also be avoided in patients with cardiac arrhythmias and other circumstances that might increase the risk of the occurrence of Torsade de Pointes and/or sudden death, including symptomatic bradycardia, hypokalemia or hypomagnesemia.
Inflammatory Bowel Disease
Major:
Mintox Tablets
The magnesium hydroxide in Mintox Tablets has a major potential interaction with Inflammatory Bowel Disease.
The use of laxatives is contraindicated in patients with inflammatory bowel disease. Patients with inflammatory bowel disease may experience colonic perforation with use of stimulant laxatives.
Intestinal Obstruction
Major:
Mintox Tablets
The aluminum hydroxide in Mintox Tablets 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:
pimavanserin
Pimavanserin has a major potential interaction with Liver Disease.
The use of pimavanserin is not recommended in patients with hepatic impairment, as this drug has not been evaluated in this patient population.
Magnesium Imbalance
Major:
pimavanserin
Pimavanserin has a major potential interaction with Magnesium Imbalance.
Pimavanserin prolongs the QT interval and should be avoided in patients with known QT prolongation or in patients taking other drugs known to prolong QT interval (class 1A and class 3 antiarrhythmics, certain antipsychotics, and some antibiotics). Pimavanserin should also be avoided in patients with cardiac arrhythmias and other circumstances that might increase the risk of the occurrence of Torsade de Pointes and/or sudden death, including symptomatic bradycardia, hypokalemia or hypomagnesemia.
Neuroleptic Malignant Syndrome
Major:
pimavanserin
Pimavanserin has a major potential interaction with Neuroleptic Malignant Syndrome.
The central dopaminergic blocking effects of neuroleptic agents may precipitate or aggravate a potentially fatal symptom complex known as neuroleptic malignant syndrome (NMS). NMS is observed most frequently when high-potency agents like haloperidol are administered intramuscularly, but may occur with any neuroleptic agent given for any length of time. Clinical manifestations of NMS include hyperpyrexia, muscle rigidity, altered mental status and autonomic instability (irregular pulse or blood pressure, tachycardia, diaphoresis and cardiac arrhythmias). Additional signs may include elevated creatine phosphokinase, myoglobinuria, and acute renal failure. Neuroleptic agents should not be given to patients with active NMS and should be immediately discontinued if currently being administered in such patients. In patients with a history of NMS, introduction or reintroduction of neuroleptic agents should be carefully considered, since NMS may recur.
Neutropenia
Moderate:
pimavanserin
Pimavanserin has a moderate potential interaction with Neutropenia.
Cases of leukopenia, neutropenia, and agranulocytosis have been reported with the use of atypical antipsychotic agents. Patients with preexisting low white blood cell count may be at increased risk. Therapy with these agents should be administered cautiously in patients with a history of, or predisposition to, decreased white blood cell or neutrophil counts. Clinical monitoring of hematopoietic function is recommended. At the first sign of a clinically significant decline in white blood cells, discontinuation of atypical antipsychotic therapy should be considered in the absence of other causative factors, and the patient closely monitored for fever or other signs and symptoms of infection.
Phosphate Imbalance
Major:
Mintox Tablets
The aluminum hydroxide in Mintox Tablets 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.
Renal Dysfunction
Major:
Mintox Tablets
The magnesium hydroxide in Mintox Tablets 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.
Major:
Mintox Tablets
The aluminum hydroxide in Mintox Tablets 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.
Moderate:
pimavanserin
Pimavanserin has a moderate potential interaction with Renal Dysfunction.
The use of pimavanserin is not recommended in patients with severe renal impairment (CrCl < 30 mL/min), as it has not been evaluated in this patient population. No dose adjustment is needed for patients with mild to moderate renal disease.
Weight Loss
Moderate:
pimavanserin
Pimavanserin has a moderate potential interaction with Weight Loss.
Hyperglycemia, in some cases extreme and associated with ketoacidosis or hyperosmolar coma or death, has been reported with the use of atypical antipsychotic agents. Patients with diabetes should be monitored for worsening control of blood glucose when treated with these agents. It is recommended that patients with risk factors for diabetes mellitus starting treatment with atypical antipsychotics should undergo fasting blood glucose testing at the beginning of treatment, and periodically thereafter. Any patient treated with atypical antipsychotics should be monitored for symptoms of hyperglycemia including polydipsia, polyuria, polyphagia, and weakness. Patients who develop symptoms of hyperglycemia during treatment with atypical antipsychotics should undergo fasting blood glucose testing. In some cases, hyperglycemia has resolved when treatment with these agents was discontinued; however, some patients required continuation of anti-diabetic treatment despite discontinuation of the atypical antipsychotic drug.
More resources
Mintox Tablets
A total of 455 drugs are known to interact with Mintox Tablets.
- Mintox tablets is in the drug class antacids.
- Mintox tablets is used to treat the following conditions:
pimavanserin
A total of 374 drugs are known to interact with pimavanserin.
- Pimavanserin is in the drug class atypical antipsychotics.
- Pimavanserin is used to treat Parkinson's Disease Psychosis.
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
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