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

Summary:

Drug interactions are reported among people who take Tysabri (natalizumab) and Fentanyl citrate (fentanyl citrate). Common drug interactions include back pain among females and fatigue among males.

The phase IV clinical study analyzes what interactions people have when they take Tysabri and Fentanyl citrate. 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 Tysabri?

Tysabri has active ingredients of natalizumab. It is often used in multiple sclerosis. eHealthMe is studying from 221,369 Tysabri users. Check the latest studies of Tysabri.

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, 13, 2026

13 people who take Tysabri and Fentanyl citrate together, and have interactions are studied.

Tysabri and Fentanyl citrate drug interactions.

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

female:

Back pain
Progressive multifocal leukoencephalopathy (rapidly progressive neuromuscular disease caused by opportunistic infection of brain cells)
Cardiac failure
Confusional state
Gait disturbance
Nausea (feeling of having an urge to vomit)
Plasma cell myeloma (cancer that begins in plasma cells)
Pulmonary embolism (blockage of the main artery of the lung)
Spinal compression fracture (fracture due to spinal compression on bone)
Vomiting

male:

Fatigue (feeling of tiredness)
Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Nausea (feeling of having an urge to vomit)
Pruritus (severe itching of the skin)
Road traffic accident
Anaemia (lack of blood)
Coronary artery disease (plaque building up along the inner walls of the arteries of the heart, which narrows the arteries and restricts blood flow to the heart)
Depression
Diplopia (double vision)
Dry eye (lack of adequate tears)

What are the common drug interactions of Tysabri and Fentanyl Citrate, 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:

Nausea (feeling of having an urge to vomit)
Back pain
Cardiac failure
Plasma cell myeloma (cancer that begins in plasma cells)
Pulmonary embolism (blockage of the main artery of the lung)
Spinal compression fracture (fracture due to spinal compression on bone)
Vomiting
Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Concussion (short loss of normal brain function in response to a head injury)
Confusional state

50-59:

Fatigue (feeling of tiredness)
Back pain
Coronary artery disease (plaque building up along the inner walls of the arteries of the heart, which narrows the arteries and restricts blood flow to the heart)
Depression
Diplopia (double vision)
Dry eye (lack of adequate tears)
Dysphonia (speech disorder attributable to a disorder of phonation)
Extraocular muscle paresis (nerve paralysis outside of eye tissue)
Haemoglobin decreased
Hypoaesthesia (reduced sense of touch or sensation)

60+:

Progressive multifocal leukoencephalopathy (rapidly progressive neuromuscular disease caused by opportunistic infection of brain cells)
Back pain
Loss of consciousness
Memory impairment
Musculoskeletal pain (pain affects the bones, muscles, ligaments, tendons, and nerves)
Neck pain
Pain in extremity
Spinal cord compression
Viral infection
Weight decreased

What are the existing conditions these people have? *

Sleep Disorder: 2 people, 15.38%
Neuralgia (pain in one or more nerves): 2 people, 15.38%
Back Pain: 2 people, 15.38%
Muscle Spasms (muscle contraction): 2 people, 15.38%
Bleeding Disorders: 2 people, 15.38%
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 2 people, 15.38%
High Blood Pressure: 2 people, 15.38%
High Blood Cholesterol: 2 people, 15.38%
Gait Disturbance: 2 people, 15.38%
Tumor: 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

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