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

Summary:

Drug interactions are reported among people who take Androgel (testosterone) and Tysabri (natalizumab). Common drug interactions include gait disturbance among females and fatigue among males.

The phase IV clinical study analyzes what interactions people have when they take Androgel and Tysabri. It is created by eHealthMe based on reports of 19 people who take the same drugs from the FDA, and is updated regularly.

What is Androgel?

Androgel has active ingredients of testosterone. It is often used in testosterone. eHealthMe is studying from 25,763 Androgel users. Check the latest studies of Androgel.

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.

On Aug, 09, 2026

19 people who take Androgel and Tysabri together, and have interactions are studied.

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

female:

Gait disturbance
Haemoglobin decreased
Nausea (feeling of having an urge to vomit)
Pain
Rectal polyp (fleshy growth occurring on the lining of the colon)
Vomiting
Weight decreased
Abdominal discomfort
Abdominal pain upper
Blood creatinine increased

male:

Fatigue (feeling of tiredness)
Asthenia (weakness)
Anxiety
Central nervous system lesion (an abnormality in tissue of brain or spinal cord)
Decreased interest
Migraine (headache)
Sinus disorder (disease of sinus)
Aphasia (damage to the parts of the brain that control language)
Back pain
Completed suicide (act of taking one's own life)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Central nervous system lesion (an abnormality in tissue of brain or spinal cord)
Fall
Progressive multifocal leukoencephalopathy (rapidly progressive neuromuscular disease caused by opportunistic infection of brain cells)
Sinus disorder (disease of sinus)

40-49:

Abdominal discomfort
Abdominal pain upper
Back pain
Bladder disorder
Blood creatinine increased
Cardiovascular disorder (heart diseases)
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
Dental caries
Diarrhoea
Drug ineffective

50-59:

Cognitive disorder (mental health disorders affects learning, memory, perception, and problem solving)
Libido decreased (loss of interest in sex)
Cholecystitis (infection of gallbladder)
Colitis microscopic (inflammation of colon with diarrhoea and abdominal cramps)
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
Diverticulum (out pouching of a hollow (or a fluid-filled) structure in the body)
Epstein-barr virus antibody positive
Fatigue (feeling of tiredness)
Gait disturbance
Haemoglobin decreased

60+:

Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Confusional state
Loss of consciousness
Somnolence (a state of near-sleep, a strong desire for sleep)
Abdominal discomfort
Abdominal pain
Affect lability (emotional incontinence)
Affective disorder (mental disorder)
Aggression
Anaemia (lack of blood)

What are the existing conditions these people have? *

Blood Testosterone Decreased: 4 people, 21.05%
Sleep Disorder: 2 people, 10.53%
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 2 people, 10.53%
Hypogonadism (reduction or absence of hormone secretion or other physiological activity of the gonads (testes or ovaries)): 2 people, 10.53%
Depression: 2 people, 10.53%
Stress And Anxiety: 1 person, 5.26%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 1 person, 5.26%
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): 1 person, 5.26%
Paroxysmal Nocturnal Haemoglobinuria (haemoglobin in the urine): 1 person, 5.26%
Pain: 1 person, 5.26%

* Approximation only. Some reports may have incomplete information.

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