OpenClaim

Siponimod Side Effects

The most commonly reported side effects of siponimod include fatigue, headache, and dizziness, based on 8,712 FDA adverse event reports from 2017 to 2025. 4.8% of reports found the drug to be ineffective.

Siponimod side effects

Percentages show how often each reaction appears relative to total reports for siponimod.

1
Fatigue11.3%981
2
Headache10.1%877
3
Dizziness7.6%664
4
Gait Disturbance6.0%527
5
Multiple Sclerosis Relapse6.0%521
6
Fall5.7%496
7
Multiple Sclerosis5.5%475
8
Drug Ineffective4.8%415
9
Nausea4.7%406
10
Lymphocyte Count Decreased4.6%403
11
Product Dose Omission Issue4.5%389
12
Urinary Tract Infection4.2%365
13
Covid-194.2%364
14
Asthenia4.0%349
15
Pain3.8%335

These are voluntary reports and do not establish that siponimod caused these reactions.

Report severity

49.3%Serious4,294 reports
16.3%Hospitalizations1,421 reports
2.3%Fatal203 reports

Seriousness is determined by the reporter, not by OpenClaim.

Siponimod drug interactions

Other drugs that appear in adverse event reports alongside siponimod. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Fingolimod2.7%231
2
Dalfampridine1.5%132
3
Ofatumumab1.0%85
4
Rosuvastatin0.8%73
5
Dimethyl0.8%72
6
Interferon0.8%67
7
Amlodipine0.7%65
8
Ocrelizumab0.6%55
9
Baclofen0.6%49
10
Metformin0.4%39
11
Teriflunomide0.4%37
12
Gabapentin0.4%36
13
Natalizumab0.4%35
14
Glatiramer-acetate0.4%34
15
Bisoprolol-fumarate0.4%32

Taken alongside

1
Ergocalciferol5.0%435
2
Baclofen4.1%353
3
Gabapentin2.6%228
4
Dalfampridine2.5%215
5
Cyanocobalamin1.9%163
6
Levothyroxine-sodium1.7%148
7
Acetaminophen1.6%142
8
Aspirin1.5%135
9
Ibuprofen1.4%124
10
Pregabalin1.3%110
11
Duloxetine-hydrochloride1.2%104
12
Amlodipine1.2%104
13
Calcium1.1%97
14
Atorvastatin-calcium1.1%94
15
Ascorbic-acid1.0%84

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports siponimod side effects

70.1% of siponimod adverse event reports involve female patients and 23.3% involve male patients. The largest age group is adult at 86%. These figures reflect who reports side effects, not underlying risk.

Sex

Female70.1%
Male23.3%
Unknown6.6%

Age group

< 2<0.1%
2–11<0.1%
12–17<0.1%
18–6485.7%
65+14.2%

What is siponimod used for

Conditions and purposes for which patients were taking siponimod when the adverse event was reported.

AlopeciaAbdominal DiscomfortAccidental OverdoseAge-related Macular DegenerationAgitationAlopeciaAmnesiaCerebrovascular AccidentClinically Isolated SyndromeCognitive DisorderCrohn^s DiseaseCyp2c9 PolymorphismCarcinoma In SituCardiac DisorderClinically Isolated Syndrome

Showing 15 of 75 indications

Siponimod brand names and reporting trend

Siponimod is sold under the brand name Mayzent.

Brand names

Mayzent800

Quarterly reports (20172025)

20172020202220242025

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking siponimod with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.