Amrix and Avonex drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Amrix (cyclobenzaprine hydrochloride) and Avonex (interferon beta 1a). Common drug interactions include bronchitis among females and drug ineffective among males.

The phase IV clinical study analyzes what interactions people have when they take Amrix and Avonex. It is created by eHealthMe based on reports of 38 people who take the same drugs from the FDA, and is updated regularly.

What is Amrix?

Amrix has active ingredients of cyclobenzaprine hydrochloride. It is often used in back pain. eHealthMe is studying from 1,130 Amrix users. Check the latest studies of Amrix.

What is Avonex?

Avonex has active ingredients of interferon beta 1a. It is often used in multiple sclerosis. eHealthMe is studying from 198,544 Avonex users. Check the latest studies of Avonex.

On Aug, 07, 2026

38 people who take Amrix and Avonex together, and have interactions are studied.

What are the common drug interactions of Amrix and Avonex, by gender? *:

female:

Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Infectious mononucleosis (infection usually caused by the epstein-barr virus)
Osteoarthritis (a joint disease caused by cartilage loss in a joint)
Pneumonia
Diarrhoea
Arthritis (form of joint disorder that involves inflammation of one or more joints)
Autoimmune disorder (a condition in which the immune system attacks the body's normal substances and tissue)
Drug ineffective
Dyspepsia (indigestion)
Fatigue (feeling of tiredness)

male:

Drug ineffective
Fall
Appetite disorder (abnormal eating habits)
Fatigue (feeling of tiredness)
Peripheral swelling
Weight decreased

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Pneumonia mycoplasmal (mycoplasma pneumonia (mp) is a contagious respiratory infection)
Bronchitis (inflammation of the mucous membrane in the bronchial tubes)
Diarrhoea
Headache (pain in head)
Epstein-barr virus infection

30-39:

n/a

40-49:

n/a

50-59:

Pain
Arthritis (form of joint disorder that involves inflammation of one or more joints)
Dyspepsia (indigestion)
Fatigue (feeling of tiredness)
Fibromyalgia (a long-term condition which causes pain all over the body)
Gait disturbance
Lung carcinoma cell type unspecified stage iv (the lung cancer has spread to other organs of the body, such as the other lung, brain, or liver)
Neuropathy peripheral (surface nerve damage)
Restless legs syndrome (a powerful urge to move your legs)
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)

60+:

Alopecia (absence of hair from areas of the body)
Diarrhoea
Disability
Heart rate decreased
Hospitalisation
Hyponatraemia (abnormally low level of sodium in the blood; associated with dehydration)
Intervertebral disc protrusion (spinal disc protrusion)
Lung cancer metastatic (lung cancer spreads to other parts)
Osteoarthritis (a joint disease caused by cartilage loss in a joint)
Sinus disorder (disease of sinus)

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 21 people, 55.26%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 21 people, 55.26%
Nausea (feeling of having an urge to vomit): 5 people, 13.16%
Drowsiness: 3 people, 7.89%
Vitamin D Decreased: 2 people, 5.26%
Pain: 2 people, 5.26%
Multiple Allergies (allergy to multiple agents): 2 people, 5.26%
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 2 people, 5.26%
Headache (pain in head): 2 people, 5.26%
Gait Disturbance: 2 people, 5.26%

* Approximation only. Some reports may have incomplete information.

Do you take Amrix and Avonex?

- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously