Zantac and Parlodel drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Zantac (ranitidine hydrochloride) and Parlodel (bromocriptine mesylate). Common drug interactions include dysuria among females and depressed level of consciousness among males.

The phase IV clinical study analyzes what interactions people have when they take Zantac and Parlodel. It is created by eHealthMe based on reports of 20 people who take the same drugs from the FDA, and is updated regularly.

What is Zantac?

Zantac has active ingredients of ranitidine hydrochloride. It is often used in gastroesophageal reflux disease. eHealthMe is studying from 434,161 Zantac users. Check the latest studies of Zantac.

What is Parlodel?

Parlodel has active ingredients of bromocriptine mesylate. eHealthMe is studying from 2,327 Parlodel users. Check the latest studies of Parlodel.

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 Aug, 23, 2026

20 people who take Zantac and Parlodel together, and have interactions are studied.

What are the common drug interactions of Zantac and Parlodel, by gender? *:

female:

Dysuria (painful or difficult urination)
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Contusion (a type of hematoma of tissue in which capillaries)
Crying
Depression
Disturbance in attention
Dyspnoea (difficult or laboured respiration)
Fatigue (feeling of tiredness)
Heart rate increased

male:

Depressed level of consciousness
Speech disorder
Drug toxicity
Ileus (a painful obstruction of the ileum or other part of the intestine)
Incontinence (lack of moderation or self-control)
Nausea (feeling of having an urge to vomit)
Oral mucosal discolouration (change in colour of mucous membrane of mouth)
Anorexia (eating disorder characterized by immoderate food restriction and irrational fear of gaining weight)
C-reactive protein increased
Cardiac failure

What are the common drug interactions of Zantac and Parlodel, 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:

Colitis (inflammation of colon)
Hypotension (abnormally low blood pressure)
Vasospasm (sudden constriction of a blood vessel, reducing its diameter and flow rate)
Visual field defect

50-59:

Dysuria (painful or difficult urination)
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Contusion (a type of hematoma of tissue in which capillaries)
Crying
Depression
Disturbance in attention
Dyspnoea (difficult or laboured respiration)
Fatigue (feeling of tiredness)
Heart rate increased

60+:

Depressed level of consciousness
Speech disorder
Drug toxicity
Ileus (a painful obstruction of the ileum or other part of the intestine)
Incontinence (lack of moderation or self-control)
Nausea (feeling of having an urge to vomit)
Oral mucosal discolouration (change in colour of mucous membrane of mouth)
Rash erythematous (redness of the skin)
Anorexia (eating disorder characterized by immoderate food restriction and irrational fear of gaining weight)
Application site erythema (redness of the skin at application site)

What are the existing conditions these people have? *

Insomnia (sleeplessness): 6 people, 30.00%
Herpes Zoster: 4 people, 20.00%
Depression: 3 people, 15.00%
High Blood Cholesterol: 3 people, 15.00%
Stress And Anxiety: 2 people, 10.00%
Constipation: 2 people, 10.00%
Gastritis (inflammation of stomach): 2 people, 10.00%
Glaucoma (increased fluid pressure in the eye with vision loss): 2 people, 10.00%
High Blood Pressure: 2 people, 10.00%
Hypertriglyceridaemia (excess of triglycerides in the blood): 2 people, 10.00%

* Approximation only. Some reports may have incomplete information.

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