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

Summary:

Drug interactions are reported among people who take Risperdal (risperidone) and Questran (cholestyramine). Common drug interactions include blood pressure increased among females and dehydration among males.

The phase IV clinical study analyzes what interactions people have when they take Risperdal and Questran. It is created by eHealthMe based on reports of 27 people who take the same drugs from the FDA, and is updated regularly.

What is Risperdal?

Risperdal has active ingredients of risperidone. It is often used in bipolar disorder. eHealthMe is studying from 127,729 Risperdal users. Check the latest studies of Risperdal.

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.

On Jul, 20, 2026

27 people who take Risperdal and Questran together, and have interactions are studied.

Risperdal and Questran drug interactions.

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

female:

Blood pressure increased
Depression
Insomnia (sleeplessness)
Rash
Thrombosis (formation of a blood clot inside a blood vessel)
Vomiting
Diabetes mellitus inadequate control
Gestational diabetes (diabetes in pregnancy)
Hyperglycaemia (high blood sugar)
Type 1 diabetes mellitus

male:

Dehydration (dryness resulting from the removal of water)
Gait disturbance
Neoplasm malignant (cancer tumour)
Overdose
Oxygen saturation decreased
Pneumonia aspiration (bronchopneumonia that develops due to the entrance of foreign materials into the bronchial tree)
Sedation
Somnolence (a state of near-sleep, a strong desire for sleep)
Appendicitis perforated (perforated appendicitis is a condition in which an inflamed appendix bursts)
Autoimmune disorder (a condition in which the immune system attacks the body's normal substances and tissue)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Diabetes mellitus inadequate control
Gestational diabetes (diabetes in pregnancy)
Hyperglycaemia (high blood sugar)
Type 1 diabetes mellitus
Type 2 diabetes mellitus
Weight increased

30-39:

n/a

40-49:

n/a

50-59:

Abdominal pain upper
Anxiety
Depression
Hallucination (an experience involving the perception of something not present)
International normalised ratio increased
Intestinal polyp (small growths in the bowel with the potential for further growth)
Obsessive-compulsive disorder (an anxiety disorder characterized by intrusive thoughts that produce uneasiness, apprehension, fear, or worry;)
Pathological gambling
Rash
Suicidal ideation

60+:

Dehydration (dryness resulting from the removal of water)
Lethargy (tiredness)
Overdose
Oxygen saturation decreased
Pneumonia aspiration (bronchopneumonia that develops due to the entrance of foreign materials into the bronchial tree)
Sedation
Somnolence (a state of near-sleep, a strong desire for sleep)
Gait disturbance
Blood pressure decreased
Constipation

What are the existing conditions these people have? *

Pain: 7 people, 25.93%
Stress And Anxiety: 6 people, 22.22%
Sleep Disorder: 5 people, 18.52%
High Blood Pressure: 5 people, 18.52%
Stroke (sudden death of a portion of the brain cells due to a lack of oxygen): 4 people, 14.81%
Short-Bowel Syndrome (a condition in which the body cannot absorb enough fluids and nutrients because part of the small intestine is missing): 4 people, 14.81%
Mental Disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability): 4 people, 14.81%
Device Related Infection: 4 people, 14.81%
Dermatitis Infected (inflammation of the skin due to infection): 4 people, 14.81%
Nausea (feeling of having an urge to vomit): 3 people, 11.11%

* Approximation only. Some reports may have incomplete information.

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