Questran and Nitrostat drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Questran (cholestyramine) and Nitrostat (nitroglycerin). Common drug interactions include coagulopathy among females and pneumonia among males.

The phase IV clinical study analyzes what interactions people have when they take Questran and Nitrostat. It is created by eHealthMe based on reports of 33 people who take the same drugs from the FDA, and is updated regularly.

What is Questran?

Questran has active ingredients of cholestyramine. It is often used in diarrhea. eHealthMe is studying from 4,490 Questran users. Check the latest studies of Questran.

What is Nitrostat?

Nitrostat has active ingredients of nitroglycerin. It is often used in chest pain. eHealthMe is studying from 14,082 Nitrostat users. Check the latest studies of Nitrostat.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 31, 2026

33 people who take Questran and Nitrostat together, and have interactions are studied.

Questran and Nitrostat drug interactions.

What are the common drug interactions of Questran and Nitrostat, by gender? *:

female:

Coagulopathy (blood's ability to clot is impaired)
Renal failure (kidney dysfunction)
Acarodermatitis (skin inflammation caused by mites (acarids))
Chronic kidney disease
Drug hypersensitivity
Dry mouth
Liver disorder (liver diseases)
Nephrogenic anaemia (anaemia due to kidney disease)
Pancreatitis (inflammation of pancreas)
Pruritus (severe itching of the skin)

male:

Pneumonia
Bacteraemia (presence of bacteria in the blood)
Myocarditis (inflammation of heart muscle myocardium)
Peripheral embolism (sudden interruption of blood flow to an organ or body part)
Pleural effusion (water on the lungs)
Septic shock (shock due to blood infection)
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Blood creatine phosphokinase increased
Blood creatinine increased

What are the common drug interactions of Questran and Nitrostat, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

Bacteraemia (presence of bacteria in the blood)
Colitis (inflammation of colon)
Vomiting

50-59:

Cardiac failure congestive
Bacteraemia (presence of bacteria in the blood)
Iron deficiency anaemia
Malnutrition (a condition that results from eating a diet in which certain nutrients are lacking)
Pleural effusion (water on the lungs)
Pneumonia
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Cardiac valve disease (heart valve disease)
Chronic kidney disease

60+:

Coagulopathy (blood's ability to clot is impaired)
Liver disorder (liver diseases)
Urinary tract infection
Anxiety
Arrhythmia (irregular heartbeat)
Blood creatine phosphokinase increased
Blood creatinine increased
Blood thyroid stimulating hormone increased
Breast cancer recurrent
Breath sounds

What are the existing conditions these people have? *

Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 9 people, 27.27%
Pain: 5 people, 15.15%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 5 people, 15.15%
High Blood Pressure: 5 people, 15.15%
Stress And Anxiety: 4 people, 12.12%
Ulcerative Colitis (inflammatory bowel disease (ibd). it causes swelling, ulcerations, and loss of function of the large intestine): 3 people, 9.09%
High Blood Cholesterol: 3 people, 9.09%
Bacteraemia (presence of bacteria in the blood): 3 people, 9.09%
Cardiac Failure Congestive: 3 people, 9.09%
Constipation: 3 people, 9.09%

* Approximation only. Some reports may have incomplete information.

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