Msm and Rituxan drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Msm (methylsulfonylmethane) and Rituxan (rituximab). Common drug interactions include fall among females.

The phase IV clinical study analyzes what interactions people have when they take Msm and Rituxan. 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 Msm?

Msm has active ingredients of methylsulfonylmethane. It is often used in joint pain. eHealthMe is studying from 1,210 Msm users. Check the latest studies of Msm.

What is Rituxan?

Rituxan has active ingredients of rituximab. It is often used in rheumatoid arthritis. eHealthMe is studying from 64,792 Rituxan users. Check the latest studies of Rituxan.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Jul, 02, 2026

19 people who take Msm and Rituxan together, and have interactions are studied.

What are the common drug interactions of Msm and Rituxan, by gender? *:

female:

Fall
Blood cholesterol increased
Pain
Urinary incontinence (inability to control the flow of urine and involuntary urination)
Fatigue (feeling of tiredness)
Osteopenia (a condition where bone mineral density is lower than normal)
Poor quality sleep
Weight increased
Bone pain
Burning sensation

male:

n/a

What are the common drug interactions of Msm and Rituxan, 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:

Ankle fracture
Arthropathy
Hypertension (high blood pressure)
Osteoporosis (bones weak and more likely to break)
Pain
Weight decreased
Wrist fracture

50-59:

Joint swelling
Musculoskeletal disorder (disease of the body's muscles, joints, tendons, ligaments and nerves)
Open fracture
Synovitis (inflammation of the synovial membrane)
Arthropathy
Drug effect decreased
Urinary incontinence (inability to control the flow of urine and involuntary urination)
Fatigue (feeling of tiredness)
Osteopenia (a condition where bone mineral density is lower than normal)
Pain

60+:

Blood pressure increased
Fall
Genital disorder female (diseases of female genital tract)
Haematoma (collection of blood outside the blood vessels)
Osteosclerosis (an elevation in bone density)
Weight increased

What are the existing conditions these people have? *

Osteoarthritis (a joint disease caused by cartilage loss in a joint): 14 people, 73.68%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 2 people, 10.53%
Urinary Tract Infection: 1 person, 5.26%
Fibromyalgia (a long-term condition which causes pain all over the body): 1 person, 5.26%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 1 person, 5.26%

* Approximation only. Some reports may have incomplete information.

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