Cardizem and Psyllium drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Cardizem (diltiazem hydrochloride) and Psyllium (blond psyllium). Common drug interactions include fatigue among females and cardiac failure among males.

The phase IV clinical study analyzes what interactions people have when they take Cardizem and Psyllium. It is created by eHealthMe based on reports of 18 people who take the same drugs from the FDA, and is updated regularly.

What is Cardizem?

Cardizem has active ingredients of diltiazem hydrochloride. It is often used in high blood pressure. eHealthMe is studying from 28,014 Cardizem users. Check the latest studies of Cardizem.

What is Psyllium?

Psyllium has active ingredients of blond psyllium. It is often used in constipation. eHealthMe is studying from 4,262 Psyllium users. Check the latest studies of Psyllium.

On Aug, 13, 2026

18 people who take Cardizem and Psyllium together, and have interactions are studied.

Cardizem and Psyllium drug interactions.

What are the common drug interactions of Cardizem and Psyllium, by gender? *:

female:

Fatigue (feeling of tiredness)
Dyspnoea (difficult or laboured respiration)
Acute myocardial infarction (acute heart attack)
Anxiety
Depression
Headache (pain in head)
Somnolence (a state of near-sleep, a strong desire for sleep)
Suicidal ideation
Acute respiratory failure
Ageusia (loss of taste functions of the tongue)

male:

Cardiac failure
Drug ineffective
Eustachian tube obstruction (blockage of the eustachian tube)
Febrile neutropenia (fever with reduced white blood cells)
Hypersensitivity
Hypoacusis (loss of hearing)
Oral disorder (mouth disease)
Platelet count decreased
Road traffic accident
Sinus bradycardia (an unusually slow heartbeat due to heart disease)

What are the common drug interactions of Cardizem and Psyllium, 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:

Anxiety
Depression
Headache (pain in head)
Somnolence (a state of near-sleep, a strong desire for sleep)
Suicidal ideation

50-59:

n/a

60+:

Fatigue (feeling of tiredness)
Acute myocardial infarction (acute heart attack)
Hypoaesthesia (reduced sense of touch or sensation)
Hypoxia (low oxygen in tissues)
Irritable bowel syndrome
Malaise (a feeling of general discomfort or uneasiness)
Pneumonia
Pulmonary embolism (blockage of the main artery of the lung)
Pulmonary oedema (fluid accumulation in the lungs)
Renal disorder (kidney disease)

What are the existing conditions these people have? *

Pain: 5 people, 27.78%
Nausea And Vomiting: 4 people, 22.22%
Nausea (feeling of having an urge to vomit): 4 people, 22.22%
Multiple Myeloma (cancer of the plasma cells): 3 people, 16.67%
Agranulocytosis (a deficiency of granulocytes in the blood, causing increased vulnerability to infection): 2 people, 11.11%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 2 people, 11.11%
Fluid Overload (too much fluid in the blood): 2 people, 11.11%
Hypokalemia (low potassium): 2 people, 11.11%
Hypophosphataemia (electrolyte disturbance in which there is an abnormally low level of phosphate in the blood): 2 people, 11.11%
Insomnia (sleeplessness): 2 people, 11.11%

* Approximation only. Some reports may have incomplete information.

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