Interactions between Benzthiazide and Prevduo
2 drug interactions and 28 additional warnings found for the following 2 drugs:
- benzthiazide
- Prevduo (glycopyrrolate/neostigmine)
Drug interactions
Moderate drug interactions
Moderate:
neostigmine glycopyrrolate
Applies to: Prevduo (glycopyrrolate / neostigmine) and Prevduo (glycopyrrolate / neostigmine)
Generally avoid
Anticholinergic agents and other agents with significant anticholinergic activity (e.g., clozapine, class IA antiarrhythmics especially disopyramide) may antagonize the effects of cholinergic skeletal muscle stimulants (e.g., ambenonium, edrophonium, guanidine, neostigmine, pyridostigmine). Although this interaction may be desirable in some situations, such as when atropine is used to treat excessive muscarinic side effects and cholinergic crisis induced by anticholinesterase overdose, unintentional or indiscriminate use of anticholinergic agents in the treatment of myasthenia gravis may exacerbate symptoms. In addition, such use may mask the less serious, gastrointestinal signs of cholinergic overdose and lead to inadvertent induction of cholinergic crisis, which can produce respiratory paralysis and death.
Management
Agents with potent anticholinergic activity should preferably be avoided in patients receiving cholinergic skeletal muscle stimulants. If concurrent use is necessary, patients treated for myasthenia gravis should be monitored for potential exacerbation of symptoms. Caution is advised not only because anticholinergic agents may mask the signs of a cholinergic overdose, but also because increasing muscle weakness associated with disease aggravation may be difficult to distinguish from that due to cholinergic crisis.
References (1)
- (2001) "Product Information. Mestinon (pyridostigmine)." ICN Pharmaceuticals Inc
Minor drug interactions
Minor:
benzthiazide glycopyrrolate
Applies to: benzthiazide and Prevduo (glycopyrrolate / neostigmine)
Anticholinergic agents may increase the absorption and oral bioavailability of thiazide diuretics. The proposed mechanism involves increased gastrointestinal transit time due to reduction of stomach and intestinal motility by anticholinergic agents. In six healthy volunteers, pretreatment with propantheline prolonged the time to reach peak plasma concentration (Tmax) for hydrochlorothiazide from 2.4 to 4.8 hours and increased its total 48-hour urinary recovery by 36%. Similar results were reported for chlorothiazide in another study. The clinical significance of these changes is unknown.
References (2)
- Osman MA, Welling PG (1983) "Influence of propantheline and metoclopramide on the bioavailability of chlorothiazide." Curr Ther Res Clin Exp, 34, p. 404-8
- Beermann B, Groschinsky-Grind M (1978) "Enhancement of the gastrointestinal absorption of hydrochlorothiazide by propantheline." Eur J Clin Pharmacol, 13, p. 385-7
Food/lifestyle interactions
Moderate food/lifestyle interactions
Moderate:
benzthiazide Alcohol (Ethanol)
Applies to: benzthiazide
Monitor
Certain psychotherapeutic and other CNS-active agents may have blood pressure-lowering effects and may cause dizziness, orthostatic hypotension, or syncope. These effects may be more likely during treatment initiation, dose escalation, or treatment restart. Coadministration with antihypertensives or other agents with blood pressure-lowering properties, particularly vasodilators and alpha-adrenergic blockers, may result in additive hypotensive or orthostatic effects.
Management
Monitor blood pressure and clinical response during concomitant use, especially when starting or increasing the dose of either agent. Patients should be advised to rise slowly from a sitting or lying position and to report dizziness, lightheadedness, fainting, orthostasis, palpitations, or troublesome changes in pulse or heart rate. Patients should be cautioned that alcohol may enhance blood pressure-lowering effects during concomitant use with antihypertensives or other agents with hypotensive properties. Patients should avoid driving or operating hazardous machinery until they know how the medications affect them.
References (13)
- Sternbach H (1991) "Fluoxetine-associated potentiation of calcium-channel blockers." J Clin Psychopharmacol, 11, p. 390-1
- Shook TL, Kirshenbaum JM, Hundley RF, Shorey JM, Lamas GA (1984) "Ethanol intoxication complicating intravenous nitroglycerin therapy." Ann Intern Med, 101, p. 498-9
- Feder R (1991) "Bradycardia and syncope induced by fluoxetine." J Clin Psychiatry, 52, p. 139
- Ellison JM, Milofsky JE, Ely E (1990) "Fluoxetine-induced bradycardia and syncope in two patients." J Clin Psychiatry, 51, p. 385-6
- Rodriguez de la Torre B, Dreher J, Malevany I, et al. (2001) "Serum levels and cardiovascular effects of tricyclic antidepressants and selective serotonin reuptake inhibitors in depressed patients." Ther Drug Monit, 23, p. 435-40
- Pacher P, Kecskemeti V (2004) "Cardiovascular side effects of new antidepressants and antipsychotics: new drugs, old concerns?" Curr Pharm Des, 10, p. 2463-75
- Andrews C, Pinner G (1998) "Postural hypotension induced by paroxetine." BMJ, 316, p. 595
- (2023) "Product Information. Buprenorphine (buprenorphine)." G.L. Pharma UK Ltd
- (2023) "Product Information. Temgesic (buprenorphine)." Reckitt Benckiser Pty Ltd
- (2026) "Product Information. Urapidil (Carinopharm) (urapidil)." Imported (EU)
- (2020) "Product Information. URAPIDIL ACCORD (urapidil)." ACCORD HEALTHCARE LIMITED
- (2020) "Product Information. Ebrantil (urapidil)." CHEPLAPHARM ARZNEIMITTEL GMBH
- (2026) "Product Information. Urapidil (urapidil)." Imported (Switzerland)
Moderate:
glycopyrrolate Alcohol (Ethanol)
Applies to: Prevduo (glycopyrrolate / neostigmine)
Generally avoid
Use of anticholinergic agents with alcohol may result in sufficient impairment of attention so as to render driving and operating machinery more hazardous. In addition, the potential for abuse may be increased with the combination. The mechanism of interaction is not established but may involve additive depressant effects on the central nervous system. No effect of oral propantheline or atropine on blood alcohol levels was observed in healthy volunteers when administered before ingestion of a standard ethanol load. However, one study found impairment of attention in subjects given atropine 0.5 mg or glycopyrrolate 1 mg in combination with alcohol.
Management
Alcohol should generally be avoided during therapy with anticholinergic agents. Patients should be counseled to avoid activities requiring mental alertness until they know how these agents affect them.
References (1)
- Linnoila M (1973) "Drug effects on psychomotor skills related to driving: interaction of atropine, glycopyrrhonium and alcohol." Eur J Clin Pharmacol, 6, p. 107-12
Disease interactions
26 potential interactions Applies to: 24 conditions, including High Blood Pressure, Asthma, Gout, Arrhythmia, and Hyperthyroidism.
Arrhythmia
Major:
Prevduo
The neostigmine in Prevduo has a major potential interaction with Arrhythmia.
Due to their pharmacological action, cholinesterase inhibitors can have a vagotonic effect on the sinoatrial and atrioventricular nodes producing bradycardia or heart block. Therapy with cholinesterase inhibitors should be administered cautiously in patients with preexisting bradycardia or underlying cardiac conduction abnormalities. Syncopal episodes have been reported. Atropine may be used to reverse bradycardia produced by cholinesterase inhibitors.
Major:
Prevduo
The glycopyrrolate in Prevduo has a major potential interaction with Arrhythmia.
Patients with tachycardia should be supervised closely during treatment with anticholinergic agents. Tachycardia is produced by blocking normal vagal inhibition of the SA node. Paradoxically, bradycardia may occur due to central vagal stimulation which may occur prior to peripheral cholinergic blockade.
Asthma
Moderate:
benzthiazide
Benzthiazide has a moderate potential interaction with Asthma.
Thiazide diuretics should be used with caution in patients with history of bronchial asthma as sensitivity reactions may occur.
Autonomic Neuropathy
Major:
Prevduo
The glycopyrrolate in Prevduo has a major potential interaction with Autonomic Neuropathy.
Agents with anticholinergic activity can exacerbate many of the manifestations of autonomic neuropathy, including tachycardia, anhidrosis, bladder atony, obstipation, dry mouth and eyes, cycloplegia and blurring of vision, and sexual impotence in males. Therapy with antimuscarinic agents and higher dosages of antispasmodic agents (e.g., dicyclomine or oxybutynin) should be administered cautiously in patients with autonomic neuropathy.
Brain Anomalies incl Congenital
Moderate:
Prevduo
The glycopyrrolate in Prevduo has a moderate potential interaction with Brain Anomalies incl Congenital.
Anticholinergics may cause increased side effects in pediatric patients with Down's syndrome, spastic paralysis, and other brain anomalies.
Esophageal Obstruction
Major:
Prevduo
The glycopyrrolate in Prevduo has a major potential interaction with Esophageal Obstruction.
Anticholinergics are contraindicated in patients with obstructive diseases such as achalasia, esophageal stricture or stenosis, pyloroduodenal stenosis, stenosing peptic ulcer, pyloric obstruction, and paralytic ileus. Anticholinergics may further suppress intestinal motility with resultant precipitation or aggravation of toxic megacolon.
Fever
Minor:
Prevduo
The glycopyrrolate in Prevduo has a minor potential interaction with Fever.
Atropine-like agents may increase the risk of hyperthermia in patients with fever by producing anhidrosis. Therapy with atropine-like agents should be administered cautiously in febrile patients.
Gastrointestinal Obstruction
Major:
Prevduo
The glycopyrrolate in Prevduo has a major potential interaction with Gastrointestinal Obstruction.
Anticholinergics are contraindicated in patients with obstructive diseases such as achalasia, esophageal stricture or stenosis, pyloroduodenal stenosis, stenosing peptic ulcer, pyloric obstruction, and paralytic ileus. Anticholinergics may further suppress intestinal motility with resultant precipitation or aggravation of toxic megacolon.
Glaucoma/Intraocular Hypertension
Major:
Prevduo
The glycopyrrolate in Prevduo has a major potential interaction with Glaucoma/Intraocular Hypertension.
Anticholinergic agents are contraindicated in patients with primary glaucoma, a tendency toward glaucoma (narrow anterior chamber angle), or adhesions (synechiae) between the iris and lens, as well as for the elderly and others in whom undiagnosed glaucoma or excessive pressure in the eye may be present. Because anticholinergics cause mydriasis, they may exacerbate these conditions.
Gout
Moderate:
benzthiazide
Benzthiazide has a moderate potential interaction with Gout.
Thiazide diuretics decrease the rate of uric acid excretion. Hyperuricemia occurs frequently but is usually asymptomatic and rarely leads to clinical gout except in patients with a history of gout or chronic renal failure. Therapy with thiazide diuretics should be administered cautiously in such patients.
High Blood Pressure
Minor:
Prevduo
The glycopyrrolate in Prevduo has a minor potential interaction with High Blood Pressure.
Cardiovascular effects of anticholinergics may exacerbate hypertension. Therapy with anticholinergic agents should be administered cautiously in patients with hypertension.
Hyperthyroidism
Moderate:
Prevduo
The neostigmine in Prevduo has a moderate potential interaction with Hyperthyroidism.
Many of the manifestations of hyperthyroidism may be exacerbated by increased levels of acetylcholine produced by cholinesterase inhibitors. Therapy with cholinesterase inhibitors should be administered cautiously to patients with hyperthyroidism. Monitoring of thyroid levels is recommended.
Infectious Gastroenteritis
Major:
Prevduo
The glycopyrrolate in Prevduo has a major potential interaction with Infectious Gastroenteritis.
The use of drugs with antiperistaltic activity (primarily antidiarrheal and antimuscarinic agents, but also antispasmodic agents such as dicyclomine or oxybutynin at high dosages) is contraindicated in patients with diarrhea due to pseudomembranous enterocolitis or enterotoxin-producing bacteria. These drugs may prolong and/or worsen diarrhea associated with organisms that invade the intestinal mucosa, such as toxigenic E. coli, Salmonella and Shigella, and pseudomembranous colitis due to broad-spectrum antibiotics. Other symptoms and complications such as fever, shedding of organisms and extraintestinal illness may also be increased or prolonged. In general, because antiperistaltic agents decrease gastrointestinal motility, they may delay the excretion of infective gastroenteric organisms or toxins and should be used cautiously in patients with any infectious diarrhea, particularly if accompanied by high fever or pus or blood in the stool. Some cough and cold and other combination products may occasionally include antimuscarinic agents for their drying effects and may, therefore, require careful selection when necessary.
Intellectual Disability
Moderate:
Prevduo
The glycopyrrolate in Prevduo has a moderate potential interaction with Intellectual Disability.
Anticholinergics may cause increased side effects in pediatric patients with Down's syndrome, spastic paralysis, and other brain anomalies.
Intestinal Obstruction
Major:
Prevduo
The neostigmine in Prevduo has a major potential interaction with Intestinal Obstruction.
Neostigmine is contraindicated in mechanical obstruction of the urinary or intestinal tract and peritonitis.
Ischemic Heart Disease
Major:
Prevduo
The neostigmine in Prevduo has a major potential interaction with Ischemic Heart Disease.
The use of cholinesterase inhibitors has been associated with a constriction of coronary arteries. Therapy with cholinesterase inhibitors should be administered cautiously in patients with coronary artery disease.
Liver Disease
Moderate:
Prevduo
The neostigmine in Prevduo has a moderate potential interaction with Liver Disease.
Neostigmine is metabolized by microsomal enzymes in the liver, and the effect of hepatic impairment on pharmacokinetics has not been evaluated. Patients should be carefully monitored if hepatically cleared neuromuscular blocking agents are used, as their duration of action may be prolonged due to hepatic insufficiency.
Moderate:
Prevduo
The glycopyrrolate in Prevduo has a moderate potential interaction with Liver Disease.
The pharmacokinetics of glycopyrrolate in hepatically impaired patients is unknown, however, caution is advised since anticholinergics can worsen this condition.
Myasthenia Gravis
Major:
Prevduo
The glycopyrrolate in Prevduo has a major potential interaction with Myasthenia Gravis.
The use of glycopyrrolate is contraindicated in patients with myasthenia gravis.
Parkinsonism
Major:
Prevduo
The neostigmine in Prevduo has a major potential interaction with Parkinsonism.
Cholinesterase inhibitors should be used with caution in patients with parkinsonism. Some of these drugs might be contraindicated in these patients (refer to specific prescribing information). Symptoms of Parkinson's disease may be exacerbated with the increase in cholinergic activity. Caregivers and patients should be advised.
Psychosis
Moderate:
Prevduo
The glycopyrrolate in Prevduo has a moderate potential interaction with Psychosis.
Toxic psychosis manifested as confusion, disorientation, agitation, excitation, memory impairment, delusions and hallucinations may develop at toxic and therapeutic dosages of antimuscarinic agents. Therapy with these agents should be administered cautiously in patients with mental disorders receiving antimuscarinic agents for control of drug-induced extrapyramidal effects, especially at the beginning of therapy or during dosage adjustment. Psychiatric deterioration and psychotic flare-ups have also been reported following withdrawal of therapy. Symptoms include delusions, hallucinations, aggression or violent behavior, and suicidal tendencies. In high dosages, antimuscarinic agents may sometimes produce euphorigenic effects. For this reason, it can be a drug of abuse.
Renal Dysfunction
Moderate:
Prevduo
The glycopyrrolate in Prevduo has a moderate potential interaction with Renal Dysfunction.
Elimination of glycopyrrolate may be severely impaired in renal failure. Use caution when administering glycopyrrolate to patients with impaired renal function, and they should be closely monitored while under the effect of the neuromuscular blocking agent.
Tardive Dyskinesia
Major:
Prevduo
The glycopyrrolate in Prevduo has a major potential interaction with Tardive Dyskinesia.
Anticholinergic agents and agents with secondary anticholinergic activity may aggravate tardive dyskinesia or induce previously suppressed symptoms. Therapy with these agents should be avoided, if possible, or administered cautiously in patients with preexisting tardive dyskinesia, particularly in the elderly. If tardive dyskinesia symptoms develop or worsen during treatment with an anticholinergic agent, prompt withdrawal of therapy will provide better chances of improving the condition.
Ulcerative Colitis
Major:
Prevduo
The glycopyrrolate in Prevduo has a major potential interaction with Ulcerative Colitis.
Glycopyrrolate is contraindicated in patients with severe ulcerative colitis and toxic mega-colon complicating ulcerative colitis.
Urinary Retention
Major:
Prevduo
The glycopyrrolate in Prevduo has a major potential interaction with Urinary Retention.
In general, the use of anticholinergic agents is contraindicated in patients with urinary retention and bladder neck obstruction caused by prostatic hypertrophy. Dysuria may occur and may require catheterization. Also, anticholinergic drugs may aggravate partial obstructive uropathy. Caution is advised even when using agents with mild to moderate anticholinergic activity, particularly in elderly patients.
Urinary Tract Obstruction
Major:
Prevduo
The neostigmine in Prevduo has a major potential interaction with Urinary Tract Obstruction.
Neostigmine is contraindicated in mechanical obstruction of the urinary or intestinal tract and peritonitis.
More resources
benzthiazide
A total of 495 drugs are known to interact with benzthiazide.
- Benzthiazide is in the drug class thiazide diuretics.
- Benzthiazide is used to treat the following conditions:
Prevduo
A total of 297 drugs are known to interact with Prevduo.
- Prevduo is in the drug class antidotes.
- Prevduo is used to treat Reversal of Neuromuscular Blockade.
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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