Asacol and Tiazac drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Asacol (mesalamine) and Tiazac (diltiazem hydrochloride). Common drug interactions include abdominal tenderness among females.

The phase IV clinical study analyzes what interactions people have when they take Asacol and Tiazac. It is created by eHealthMe based on reports of 21 people who take the same drugs from the FDA, and is updated regularly.

What is Asacol?

Asacol has active ingredients of mesalamine. It is often used in ulcerative colitis. eHealthMe is studying from 20,618 Asacol users. Check the latest studies of Asacol.

What is Tiazac?

Tiazac has active ingredients of diltiazem hydrochloride. It is often used in high blood pressure. eHealthMe is studying from 4,761 Tiazac users. Check the latest studies of Tiazac.

On Jul, 13, 2026

21 people who take Asacol and Tiazac together, and have interactions are studied.

What are the common drug interactions of Asacol and Tiazac, by gender? *:

female:

Abdominal tenderness
Diarrhoea
Appetite decreased (decreased appetite occurs when you have a reduced desire to eat)
Cellulitis (infection under the skin)
Gallbladder disorder
Nasopharyngitis (inflammation of the nasopharynx)
Poor venous access
Renal failure acute (rapid kidney dysfunction)
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)
Urinary tract infection

male:

n/a

What are the common drug interactions of Asacol and Tiazac, 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:

Haematochezia (passage of stools containing blood)
Joint swelling
Nausea (feeling of having an urge to vomit)
Pyrexia (fever)

50-59:

Abdominal tenderness
Drug hypersensitivity
Helicobacter infection (helicobacter pylori (h. pylori) infects stomach)
Malaise (a feeling of general discomfort or uneasiness)
Weight decreased
Abdominal pain lower
Cellulitis (infection under the skin)
Diarrhoea
Gallbladder disorder
Nasopharyngitis (inflammation of the nasopharynx)

60+:

Abdominal pain
Appetite decreased (decreased appetite occurs when you have a reduced desire to eat)
Cough
Dizziness (excl vertigo)
Ecchymosis (a discoloration of the skin resulting from bleeding underneath)
Fatigue (feeling of tiredness)
Macular degeneration (painless eye condition that leads to the gradual loss of central vision)
Myalgia (muscle pain)
Nausea (feeling of having an urge to vomit)
Nocturia (the need to get up in the night to urinate)

What are the existing conditions these people have? *

Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 17 people, 80.95%
Urinary Tract Infection: 3 people, 14.29%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 9.52%
Cholangitis Sclerosing (infection and obstruction of bile duct): 2 people, 9.52%

* Approximation only. Some reports may have incomplete information.

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