Copegus and Dilantin drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Copegus (ribavirin) and Dilantin (phenytoin sodium). Common drug interactions include fatigue among females and pollakiuria among males.

The phase IV clinical study analyzes what interactions people have when they take Copegus and Dilantin. It is created by eHealthMe based on reports of 13 people who take the same drugs from the FDA, and is updated regularly.

What is Copegus?

Copegus has active ingredients of ribavirin. It is often used in hepatitis c. eHealthMe is studying from 15,115 Copegus users. Check the latest studies of Copegus.

What is Dilantin?

Dilantin has active ingredients of phenytoin sodium. It is often used in epilepsy. eHealthMe is studying from 20,858 Dilantin users. Check the latest studies of Dilantin.

On Jul, 11, 2026

13 people who take Copegus and Dilantin together, and have interactions are studied.

What are the common drug interactions of Copegus and Dilantin, by gender? *:

female:

Fatigue (feeling of tiredness)
Dizziness
Grand mal convulsion (a type of generalized seizure that affects the entire brain)
Headache (pain in head)
Insomnia (sleeplessness)
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
Alopecia (absence of hair from areas of the body)
Blindness
Death
Decreased appetite

male:

Pollakiuria (abnormally frequent passage of relatively small quantities or urine)
Anaemia (lack of blood)
Malaise (a feeling of general discomfort or uneasiness)
Nausea (feeling of having an urge to vomit)
Papule
Petit mal epilepsy (absence seizure)
Pyrexia (fever)
Tooth extraction
Toothache (tooth pain)
Weight increased

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Fatigue (feeling of tiredness)
Dizziness
Grand mal convulsion (a type of generalized seizure that affects the entire brain)
Headache (pain in head)
Insomnia (sleeplessness)
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
Alopecia (absence of hair from areas of the body)
Blindness
Death
Decreased appetite

40-49:

Abnormal dreams
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
Depression
Disturbance in attention
Erectile dysfunction
Grand mal convulsion (a type of generalized seizure that affects the entire brain)
Hallucination, auditory (perceiving sounds without auditory stimulus)
Hallucination, visual (seeing things that aren't there)
Memory impairment
Rash

50-59:

Anaemia (lack of blood)
Anorectal discomfort
Nausea (feeling of having an urge to vomit)
Papule
Petit mal epilepsy (absence seizure)
Pyrexia (fever)
Tooth extraction
Toothache (tooth pain)
Weight increased
Asthenia (weakness)

60+:

n/a

What are the existing conditions these people have? *

Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 1 person, 7.69%
Hepatitis (inflammation of the liver): 1 person, 7.69%
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

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