Natalizumab

Common brands: Tysabri, Avonex, Ampyra, Baclofen (Intrathecal), Lyvispah

Top reporter: Biogen Inc.

Integrin Receptor Antagonist [EPC]Interferon beta [EPC]Potassium Channel Blocker [EPC]gamma-Aminobutyric Acid-ergic Agonist [EPC]Provitamin D2 Compound [EPC]
180,087
Total Reports
21,803
Serious Reports
5,066
Death Reports
30
Reported Reactions
Death Report Ratio: Moderate (2.81%)

Patient Demographics

Male
40,585
Female
136,525

Reported Adverse Reactions (30)

Side effects reported in FDA adverse event reports for Natalizumab.

# Reaction Reports % of Total
1 FATIGUE 19,515
10.6%
2 MULTIPLE SCLEROSIS RELAPSE 16,845
9.1%
3 HEADACHE 9,953
5.4%
4 MULTIPLE SCLEROSIS 9,733
5.3%
5 GAIT DISTURBANCE 9,491
5.2%
6 FALL 8,030
4.4%
7 ASTHENIA 7,999
4.3%
8 MEMORY IMPAIRMENT 7,942
4.3%
9 MALAISE 7,363
4.0%
10 DRUG INEFFECTIVE 6,898
3.7%
11 URINARY TRACT INFECTION 6,299
3.4%
12 PAIN 5,958
3.2%
13 BALANCE DISORDER 5,679
3.1%
14 HYPOAESTHESIA 5,415
2.9%
15 PAIN IN EXTREMITY 4,923
2.7%
16 MUSCULAR WEAKNESS 4,589
2.5%
17 NASOPHARYNGITIS 4,474
2.4%
18 NAUSEA 4,320
2.3%
19 DIZZINESS 4,054
2.2%
20 MOBILITY DECREASED 3,835
2.1%
21 STRESS 3,564
1.9%
22 COGNITIVE DISORDER 3,520
1.9%
23 MUSCLE SPASMS 3,191
1.7%
24 DEPRESSION 3,187
1.7%
25 ARTHRALGIA 3,049
1.7%
26 FEELING ABNORMAL 2,963
1.6%
27 HYPERSENSITIVITY 2,888
1.6%
28 PYREXIA 2,876
1.6%
29 BACK PAIN 2,808
1.5%
30 PARAESTHESIA 2,793
1.5%

Important Disclaimer

FDA adverse event reports are submitted voluntarily and do not prove causation. A reported reaction does not mean the drug caused it. Drugs with more users naturally have more reports. Always consult your doctor or pharmacist before making medication decisions.