Cimetidine and Fentanyl citrate drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Cimetidine (cimetidine) and Fentanyl citrate (fentanyl citrate). Common drug interactions include dysphagia among females and alanine aminotransferase increased among males.

The phase IV clinical study analyzes what interactions people have when they take Cimetidine and Fentanyl citrate. It is created by eHealthMe based on reports of 17 people who take the same drugs from the FDA, and is updated regularly.

What is Cimetidine?

Cimetidine has active ingredients of cimetidine. It is often used in gastroesophageal reflux disease. eHealthMe is studying from 10,531 Cimetidine users. Check the latest studies of Cimetidine.

What is Fentanyl citrate?

Fentanyl citrate has active ingredients of fentanyl citrate. It is often used in pain. eHealthMe is studying from 21,294 Fentanyl citrate users. Check the latest studies of Fentanyl citrate.

On Jul, 25, 2026

17 people who take Cimetidine and Fentanyl citrate together, and have interactions are studied.

Cimetidine and Fentanyl citrate drug interactions.

What are the common drug interactions of Cimetidine and Fentanyl Citrate, by gender? *:

female:

Dysphagia (a condition in which swallowing is difficult or painful)
Dyspnoea (difficult or laboured respiration)
Fatigue (feeling of tiredness)
Hepatic enzyme increased
Hepatomegaly (abnormal enlargement of the liver)
Hypoventilation (too shallow or too slow breathing, which does not meet the needs of the body)
Infection
Intestinal obstruction
Metastatic neoplasm (spreadable cancer tumour)
Neutropenia (an abnormally low number of neutrophils)

male:

Alanine aminotransferase increased
Alopecia (absence of hair from areas of the body)
Chest pain
Chills (felling of cold)
Decreased interest
Dental caries
Depression
Dysuria (painful or difficult urination)
Erectile dysfunction
Fatigue (feeling of tiredness)

What are the common drug interactions of Cimetidine and Fentanyl Citrate, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Abdominal distension
Abdominal pain
Adenocarcinoma (malignant tumour formed from glandular structures in epithelial tissue)
Candidiasis (candidiasis or thrush is a fungal infection)
Collapse of lung (functional breakdown of lung)
Constipation
Culture urine positive
Dyspnoea (difficult or laboured respiration)
Intestinal obstruction
Metastatic neoplasm (spreadable cancer tumour)

30-39:

n/a

40-49:

Urinary tract infection
Urine flow decreased
Vomiting
Chronic kidney disease
Metastases to liver (cancer spreads to liver)
Renal injury (kidney injury)
Alanine aminotransferase increased
Alopecia (absence of hair from areas of the body)
Anxiety
Asthenia (weakness)

50-59:

Alanine aminotransferase increased
Aspartate aminotransferase increased
Metastases to spine (cancer spreads to spine)
Respiratory depression (respiration has a rate below 12 breaths)
Aphasia (damage to the parts of the brain that control language)
Cardiac disorder
Chronic hepatic failure (long lasting liver failure)
Cirrhosis alcoholic (chronic disease of the liver marked by degeneration of cells, inflammation, and fibrous thickening of tissue caused by alcoholism)
Diaphragmatic paralysis (acquired dysfunction of the phrenic nerve)
Dysphagia (a condition in which swallowing is difficult or painful)

60+:

Cardio-respiratory arrest (sudden dysfunction of heart and lungs)
Abdominal pain
Hepatic enzyme increased
Infection
Nausea (feeling of having an urge to vomit)
Neutropenia (an abnormally low number of neutrophils)
Odynophagia (painful swallowing, in the mouth (oropharynx) or oesophagus)
Po2 decreased
Thrombocytopenia (decrease of platelets in blood)
Vomiting

What are the existing conditions these people have? *

Gastric Ulcer (stomach ulcer): 3 people, 17.65%
Weakness: 2 people, 11.76%
Metastatic Renal Cell Carcinoma (spreadable kidney cell tumour): 2 people, 11.76%
Cancer Pain: 2 people, 11.76%
Epidural Anaesthesia: 2 people, 11.76%
Hypoaesthesia (reduced sense of touch or sensation): 2 people, 11.76%
Prostate Cancer: 2 people, 11.76%
Nausea (feeling of having an urge to vomit): 1 person, 5.88%
Non-Hodgkin's Lymphoma (malignant (cancer) cells form in the lymph system): 1 person, 5.88%
Abdominal Pain Upper: 1 person, 5.88%

* Approximation only. Some reports may have incomplete information.

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