Rebif and Viagra drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Rebif (interferon beta-1a) and Viagra (sildenafil citrate). Common drug interactions include back disorder among females and drug ineffective among males.

The phase IV clinical study analyzes what interactions people have when they take Rebif and Viagra. It is created by eHealthMe based on reports of 45 people who take the same drugs from the FDA, and is updated regularly.

What is Rebif?

Rebif has active ingredients of interferon beta-1a. It is often used in multiple sclerosis. eHealthMe is studying from 61,126 Rebif users. Check the latest studies of Rebif.

What is Viagra?

Viagra has active ingredients of sildenafil citrate. It is often used in erection problems. eHealthMe is studying from 63,865 Viagra users. Check the latest studies of Viagra.

On Jun, 16, 2026

45 people who take Rebif and Viagra together, and have interactions are studied.

What are the common drug interactions of Rebif and Viagra, by gender? *:

female:

Back disorder
Blood creatinine increased
Cognitive disorder (mental health disorders affects learning, memory, perception, and problem solving)
Dependence on respirator
Depression
Disease progression
Drug ineffective
Eye disorder
Fall
Fatigue (feeling of tiredness)

male:

Drug ineffective
Fall
Infection
Abdominal pain
Abnormal behaviour
Blood pressure diastolic increased
Confusional state
Disease progression
Dizziness
Dyskinesia (abnormality or impairment of voluntary movement)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Blood creatinine increased
Histoplasmosis (infection caused by breathing in spores of a fungus)
Nephrotic syndrome (kidney disease with proteinuria, hypoalbuminemia, and oedema)
Pneumonia

30-39:

Disease progression
Ejection fraction decreased (systolic heart failure)
Epilepsy (common and diverse set of chronic neurological disorders characterized by seizures)
Cerebellar infarction (impaired blood circulation to cerebellum)
Dehydration (dryness resulting from the removal of water)
Adverse drug reaction
Carbuncle (a carbuncle is an abscess larger than a boil)
Cellulitis (infection under the skin)
Influenza like illness
Injection site haemorrhage (bleeding from injection site)

40-49:

Intervertebral disc disorder (spinal disc disorder)
Jaundice (a yellowish pigmentation of the skin, the conjunctival membranes)
Lethargy (tiredness)
Malaise (a feeling of general discomfort or uneasiness)
Osteopenia (a condition where bone mineral density is lower than normal)
Osteoporosis (bones weak and more likely to break)
Peroneal nerve palsy
Post laminectomy syndrome
Somnolence (a state of near-sleep, a strong desire for sleep)
Spinal fracture (fracture in one of vertebrae)

50-59:

Anaemia (lack of blood)
Cardiac failure congestive
Coagulopathy (blood's ability to clot is impaired)
Hypovolaemic shock (shock caused by severe blood or fluid loss)
Metabolic acidosis (body produces too much acid, or when the kidneys are not removing enough acid from the body)
Pulmonary oedema (fluid accumulation in the lungs)
Renal failure acute (rapid kidney dysfunction)
Blood pressure diastolic increased
Dizziness
Gastritis (inflammation of stomach)

60+:

Drug ineffective
Agitation (state of anxiety or nervous excitement)
Dyskinesia (abnormality or impairment of voluntary movement)
Dyspepsia (indigestion)
Fatigue (feeling of tiredness)
Feeling hot
Hypertension (high blood pressure)
Hyperventilation
Injection site erythema (redness at injection site)
Mental status changes (general changes in brain function, such as confusion, amnesia (memory loss), loss of alertness, loss of orientation)

What are the existing conditions these people have? *

Pain: 4 people, 8.89%
Stress And Anxiety: 3 people, 6.67%
Relapsing-Remitting Multiple Sclerosis (reoccurrence of an inflammatory disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged): 3 people, 6.67%
Gait Disturbance: 3 people, 6.67%

* Approximation only. Some reports may have incomplete information.

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