Relistor and Fragmin drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Relistor (methylnaltrexone bromide) and Fragmin (dalteparin sodium). Common drug interactions include coma among males.

The phase IV clinical study analyzes what interactions people have when they take Relistor and Fragmin. It is created by eHealthMe based on reports of 14 people who take the same drugs from the FDA, and is updated regularly.

What is Relistor?

Relistor has active ingredients of methylnaltrexone bromide. eHealthMe is studying from 1,659 Relistor users. Check the latest studies of Relistor.

What is Fragmin?

Fragmin has active ingredients of dalteparin sodium. It is often used in deep venous thrombosis. eHealthMe is studying from 11,999 Fragmin users. Check the latest studies of Fragmin.

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, 27, 2026

14 people who take Relistor and Fragmin together, and have interactions are studied.

What are the common drug interactions of Relistor and Fragmin, by gender? *:

female:

n/a

male:

Coma (state of unconsciousness lasting more than six hours)
Drug effect prolonged
Gastric infection (infection of stomach)
General physical health deterioration (weak health status)
Influenza
Nosocomial infection (infection from hospital)
Rash maculo-papular (red area on the skin that is covered with small confluent bumps)
Vomiting
Weight decreased
Septic shock (shock due to blood infection)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Abdominal pain
Cyanosis (lack of oxygen in body leads to blue appearance of skin ,mucous membrane nails)
Drug ineffective

40-49:

n/a

50-59:

n/a

60+:

Coma (state of unconsciousness lasting more than six hours)
Drug effect prolonged
Gastric infection (infection of stomach)
General physical health deterioration (weak health status)
Hypoxia (low oxygen in tissues)
Influenza
Nosocomial infection (infection from hospital)
Rash maculo-papular (red area on the skin that is covered with small confluent bumps)
Vomiting
Weight decreased

What are the existing conditions these people have? *

Asthma: 8 people, 57.14%
Sedation: 8 people, 57.14%
Reversal Of Sedation: 7 people, 50.00%
Blood Glucose Abnormal: 7 people, 50.00%
Metabolic Alkalosis (too much bicarbonate in the blood): 7 people, 50.00%
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 7 people, 50.00%
Infection: 7 people, 50.00%
Hypersensitivity: 7 people, 50.00%
Fungal Infection: 7 people, 50.00%
Epilepsy (common and diverse set of chronic neurological disorders characterized by seizures): 5 people, 35.71%

* Approximation only. Some reports may have incomplete information.

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