Verelan and Bactrim drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Verelan (verapamil hydrochloride) and Bactrim (sulfamethoxazole; trimethoprim). Common drug interactions include dyspnoea among females and blindness among males.

The phase IV clinical study analyzes what interactions people have when they take Verelan and Bactrim. 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 Verelan?

Verelan has active ingredients of verapamil hydrochloride. It is often used in high blood pressure. eHealthMe is studying from 1,377 Verelan users. Check the latest studies of Verelan.

What is Bactrim?

Bactrim has active ingredients of sulfamethoxazole; trimethoprim. It is often used in urinary tract infection. eHealthMe is studying from 89,117 Bactrim users. Check the latest studies of Bactrim.

On Jul, 18, 2026

18 people who take Verelan and Bactrim together, and have interactions are studied.

What are the common drug interactions of Verelan and Bactrim, by gender? *:

female:

Dyspnoea (difficult or laboured respiration)
Gastrooesophageal reflux disease (stomach contents (food or liquid) leak backwards from the stomach into the oesophagus)
Mitral valve incompetence (inefficient heart valve)
Rib fracture
Thrombosis (formation of a blood clot inside a blood vessel)
Thyroid disorder (thyroid diseases)
Tricuspid valve incompetence (inefficient heart valve)
Valvular heart disease (diseases of the heart valves)
Aortic valve stenosis (narrowing of the aortic valve)
Atrial fibrillation (fibrillation of the muscles of the atria of the heart)

male:

Blindness
Diabetes mellitus (diabetes, caused by a deficiency of the pancreatic hormone insulin)
Anaemia (lack of blood)
Apnoea (suspension of external breathing)
Atelectasis (partial or complete collapse of the lung)
Atrial fibrillation (fibrillation of the muscles of the atria of the heart)
Atrial tachycardia (rhythm disturbance that arises in the atria)
Blood glucose increased
Bradycardia (abnormally slow heart action)
Cardiac failure congestive

What are the common drug interactions of Verelan and Bactrim, 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:

n/a

50-59:

n/a

60+:

Dyspnoea (difficult or laboured respiration)
Asthenia (weakness)
Blindness
Blood glucose increased
Cardiac failure congestive
Cardiogenic shock (inadequate circulation of blood)
Cardiomegaly (increased size of heart than normal)
Cardiomyopathy (weakening of the heart muscle)
Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
Chest pain

What are the existing conditions these people have? *

Neoplasm Malignant (cancer tumour): 4 people, 22.22%
Arthropathy: 4 people, 22.22%
Thrombosis (formation of a blood clot inside a blood vessel): 2 people, 11.11%
Neck Pain: 2 people, 11.11%
Cardiac Disorder: 2 people, 11.11%
Multiple Myeloma (cancer of the plasma cells): 1 person, 5.56%
Acquired Immunodeficiency Syndrome (disease of the human immune system caused by the human immunodeficiency virus (hiv)): 1 person, 5.56%

* Approximation only. Some reports may have incomplete information.

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