{
  "meta": {
    "disclaimer": "Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated. We may limit or otherwise restrict your access to the API in line with our Terms of Service.",
    "terms": "https://open.fda.gov/terms/",
    "license": "https://open.fda.gov/license/",
    "last_updated": "2026-04-28"
  },
  "results": [
    {
      "term": "INJECTION SITE PAIN",
      "count": 994
    },
    {
      "term": "DRUG INEFFECTIVE",
      "count": 706
    },
    {
      "term": "MULTIPLE SCLEROSIS",
      "count": 679
    },
    {
      "term": "MULTIPLE SCLEROSIS RELAPSE",
      "count": 623
    },
    {
      "term": "INJECTION SITE ERYTHEMA",
      "count": 572
    },
    {
      "term": "INJECTION SITE MASS",
      "count": 441
    },
    {
      "term": "INJECTION SITE SWELLING",
      "count": 439
    },
    {
      "term": "FATIGUE",
      "count": 404
    },
    {
      "term": "DYSPNOEA",
      "count": 401
    },
    {
      "term": "INJECTION SITE REACTION",
      "count": 369
    },
    {
      "term": "INJECTION SITE PRURITUS",
      "count": 344
    },
    {
      "term": "FALL",
      "count": 319
    },
    {
      "term": "PRODUCT SUBSTITUTION ISSUE",
      "count": 310
    },
    {
      "term": "NAUSEA",
      "count": 303
    },
    {
      "term": "DIZZINESS",
      "count": 302
    },
    {
      "term": "HEADACHE",
      "count": 286
    },
    {
      "term": "PAIN",
      "count": 260
    },
    {
      "term": "HYPOAESTHESIA",
      "count": 248
    },
    {
      "term": "INJECTION SITE BRUISING",
      "count": 237
    },
    {
      "term": "FLUSHING",
      "count": 236
    },
    {
      "term": "PRODUCT DOSE OMISSION ISSUE",
      "count": 219
    },
    {
      "term": "GAIT DISTURBANCE",
      "count": 215
    },
    {
      "term": "URTICARIA",
      "count": 211
    },
    {
      "term": "ASTHENIA",
      "count": 199
    },
    {
      "term": "CHILLS",
      "count": 188
    },
    {
      "term": "INJECTION SITE URTICARIA",
      "count": 185
    },
    {
      "term": "PRURITUS",
      "count": 169
    },
    {
      "term": "MATERNAL EXPOSURE DURING PREGNANCY",
      "count": 164
    },
    {
      "term": "PRODUCT DOSE OMISSION",
      "count": 164
    },
    {
      "term": "TREMOR",
      "count": 163
    },
    {
      "term": "BACK PAIN",
      "count": 160
    },
    {
      "term": "PARAESTHESIA",
      "count": 160
    },
    {
      "term": "PAIN IN EXTREMITY",
      "count": 159
    },
    {
      "term": "CHEST PAIN",
      "count": 157
    },
    {
      "term": "ANXIETY",
      "count": 156
    },
    {
      "term": "URINARY TRACT INFECTION",
      "count": 156
    },
    {
      "term": "CHEST DISCOMFORT",
      "count": 153
    },
    {
      "term": "PYREXIA",
      "count": 153
    },
    {
      "term": "CONDITION AGGRAVATED",
      "count": 151
    },
    {
      "term": "THERAPY CESSATION",
      "count": 150
    },
    {
      "term": "HYPERSENSITIVITY",
      "count": 147
    },
    {
      "term": "INJECTION SITE HAEMORRHAGE",
      "count": 146
    },
    {
      "term": "VOMITING",
      "count": 146
    },
    {
      "term": "ERYTHEMA",
      "count": 139
    },
    {
      "term": "RASH",
      "count": 139
    },
    {
      "term": "WRONG TECHNIQUE IN PRODUCT USAGE PROCESS",
      "count": 137
    },
    {
      "term": "PALPITATIONS",
      "count": 136
    },
    {
      "term": "HOSPITALISATION",
      "count": 134
    },
    {
      "term": "MALAISE",
      "count": 134
    },
    {
      "term": "DEATH",
      "count": 132
    },
    {
      "term": "MUSCLE SPASMS",
      "count": 132
    },
    {
      "term": "FEELING ABNORMAL",
      "count": 130
    },
    {
      "term": "OFF LABEL USE",
      "count": 122
    },
    {
      "term": "MUSCULAR WEAKNESS",
      "count": 121
    },
    {
      "term": "THERAPY INTERRUPTED",
      "count": 120
    },
    {
      "term": "COVID-19",
      "count": 119
    },
    {
      "term": "INCORRECT DOSE ADMINISTERED",
      "count": 116
    },
    {
      "term": "DEVICE ISSUE",
      "count": 112
    },
    {
      "term": "LOSS OF CONSCIOUSNESS",
      "count": 108
    },
    {
      "term": "DEPRESSION",
      "count": 107
    },
    {
      "term": "DIARRHOEA",
      "count": 105
    },
    {
      "term": "ARTHRALGIA",
      "count": 103
    },
    {
      "term": "FEELING HOT",
      "count": 103
    },
    {
      "term": "BALANCE DISORDER",
      "count": 102
    },
    {
      "term": "INJECTION SITE INDURATION",
      "count": 97
    },
    {
      "term": "MEMORY IMPAIRMENT",
      "count": 95
    },
    {
      "term": "SEIZURE",
      "count": 95
    },
    {
      "term": "INJECTION SITE WARMTH",
      "count": 94
    },
    {
      "term": "HYPERHIDROSIS",
      "count": 91
    },
    {
      "term": "VISUAL IMPAIRMENT",
      "count": 90
    },
    {
      "term": "WRONG DEVICE USED",
      "count": 88
    },
    {
      "term": "PNEUMONIA",
      "count": 85
    },
    {
      "term": "HEART RATE INCREASED",
      "count": 83
    },
    {
      "term": "BURNING SENSATION",
      "count": 80
    },
    {
      "term": "PRODUCT QUALITY ISSUE",
      "count": 76
    },
    {
      "term": "SYNCOPE",
      "count": 73
    },
    {
      "term": "NEEDLE ISSUE",
      "count": 72
    },
    {
      "term": "CONTUSION",
      "count": 69
    },
    {
      "term": "INSOMNIA",
      "count": 67
    },
    {
      "term": "WEIGHT INCREASED",
      "count": 66
    },
    {
      "term": "INJECTION SITE RASH",
      "count": 65
    },
    {
      "term": "VISION BLURRED",
      "count": 65
    },
    {
      "term": "WEIGHT DECREASED",
      "count": 64
    },
    {
      "term": "ANAPHYLACTIC REACTION",
      "count": 62
    },
    {
      "term": "DISEASE PROGRESSION",
      "count": 62
    },
    {
      "term": "INFLUENZA LIKE ILLNESS",
      "count": 62
    },
    {
      "term": "SWELLING",
      "count": 61
    },
    {
      "term": "ADVERSE DRUG REACTION",
      "count": 60
    },
    {
      "term": "CONFUSIONAL STATE",
      "count": 60
    },
    {
      "term": "DRUG HYPERSENSITIVITY",
      "count": 60
    },
    {
      "term": "ABDOMINAL DISCOMFORT",
      "count": 56
    },
    {
      "term": "MIGRAINE",
      "count": 55
    },
    {
      "term": "MOBILITY DECREASED",
      "count": 55
    },
    {
      "term": "SWELLING FACE",
      "count": 54
    },
    {
      "term": "COUGH",
      "count": 53
    },
    {
      "term": "INJECTION SITE DISCOLOURATION",
      "count": 53
    },
    {
      "term": "MUSCULOSKELETAL STIFFNESS",
      "count": 53
    },
    {
      "term": "NASOPHARYNGITIS",
      "count": 53
    },
    {
      "term": "ABDOMINAL PAIN UPPER",
      "count": 52
    },
    {
      "term": "ABORTION",
      "count": 52
    }
  ]
}