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

Summary:

Drug interactions are reported among people who take Welchol (colesevelam hydrochloride) and Nitrostat (nitroglycerin). Common drug interactions include confusional state among females and arthritis among males.

The phase IV clinical study analyzes what interactions people have when they take Welchol and Nitrostat. It is created by eHealthMe based on reports of 85 people who take the same drugs from the FDA, and is updated regularly.

What is Welchol?

Welchol has active ingredients of colesevelam hydrochloride. It is often used in high blood cholesterol. eHealthMe is studying from 11,309 Welchol users. Check the latest studies of Welchol.

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 Sep, 01, 2026

85 people who take Welchol and Nitrostat together, and have interactions are studied.

Welchol and Nitrostat drug interactions.

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

female:

Confusional state
Cough
Cyanosis (lack of oxygen in body leads to blue appearance of skin ,mucous membrane nails)
Dizziness
Gait disturbance
Heart rate irregular
Hypoaesthesia (reduced sense of touch or sensation)
Nervous system disorder (a general class of medical conditions affecting the nervous system)
Neuralgia (pain in one or more nerves)
Oedema (fluid collection in tissue)

male:

Arthritis (form of joint disorder that involves inflammation of one or more joints)
Fatigue (feeling of tiredness)
Nervous system disorder (a general class of medical conditions affecting the nervous system)
Peripheral coldness
Tendon pain
Tendon rupture (tear of tendon)
Tendonitis (a condition that causes pain and swelling of tendons)
Death
Asthenia (weakness)
Cardiac failure congestive

What are the common drug interactions of Welchol 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:

Dyspnoea (difficult or laboured respiration)
Fatigue (feeling of tiredness)
Syncope (loss of consciousness with an inability to maintain postural tone)

40-49:

n/a

50-59:

Injury
Left ventricular dysfunction
Multi-organ failure (multisystem organ failure)
Pain
Renal impairment (severely reduced kidney function)
Renal injury (kidney injury)
Stress
Tricuspid valve incompetence (inefficient heart valve)
Abdominal pain
Alanine aminotransferase increased

60+:

Balance disorder
Rash
Carpal tunnel syndrome (nerve compression at wrist results numbness weakness, pain , swelling)
Cyanosis (lack of oxygen in body leads to blue appearance of skin ,mucous membrane nails)
Gait disturbance
Heart rate irregular
Nervous system disorder (a general class of medical conditions affecting the nervous system)
Tendon pain
Tendon rupture (tear of tendon)
Tendonitis (a condition that causes pain and swelling of tendons)

What are the existing conditions these people have? *

Cardiac Disorder: 19 people, 22.35%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 14 people, 16.47%
Pain: 12 people, 14.12%
High Blood Pressure: 11 people, 12.94%
Neuropathy Peripheral (surface nerve damage): 11 people, 12.94%
Diabetes: 11 people, 12.94%
Stress And Anxiety: 11 people, 12.94%
Nausea (feeling of having an urge to vomit): 10 people, 11.76%
Hypersensitivity: 10 people, 11.76%
Fluid Retention (an abnormal accumulation of fluid in the blood): 9 people, 10.59%

* Approximation only. Some reports may have incomplete information.

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