Drug
Brimonidine
Important: Reactions below are the flagged terms from this drug’s
FAERS report history (min. 3 co-reports per term) — PRR/ROR indicate
disproportionality in spontaneous reporting, not causation.
Data from FDA FAERS via openFDA. Last recalculated: 2026-09-14.
| Reaction | Co-reports (a) | PRR | ROR | Signal | |
|---|---|---|---|---|---|
| 1 | Treatment Failure | 2,763 | 95.7 | 149.5 | signal |
| 2 | Intraocular Pressure Increased | 231 | 50.3 | 51.9 | signal |
| 3 | Glaucoma | 145 | 20.8 | 21.2 | signal |
| 4 | Eye Inflammation | 44 | 12.9 | 12.9 | signal |
| 5 | Ocular Hyperaemia | 186 | 11.0 | 11.2 | signal |
| 6 | Eye Irritation | 190 | 9.4 | 9.6 | signal |
| 7 | Vitreous Floaters | 31 | 8.8 | 8.8 | signal |
| 8 | Eye Pain | 172 | 8.6 | 8.8 | signal |
| 9 | Uveitis | 42 | 8.6 | 8.6 | signal |
| 10 | Hypotonia | 31 | 8.5 | 8.5 | signal |
| 11 | Blindness Unilateral | 43 | 8.4 | 8.5 | signal |
| 12 | Hypothermia | 27 | 7.3 | 7.4 | signal |
| 13 | Retinal Detachment | 23 | 6.9 | 6.9 | signal |
| 14 | Product Packaging Quantity Issue | 26 | 6.6 | 6.6 | signal |
| 15 | Hypersensitivity | 441 | 6.6 | 6.9 | signal |
| 16 | Conjunctivitis | 39 | 5.8 | 5.9 | signal |
| 17 | Ocular Discomfort | 23 | 5.8 | 5.8 | signal |
| 18 | Eye Pruritus | 69 | 5.8 | 5.8 | signal |
| 19 | Eye Discharge | 21 | 5.7 | 5.7 | signal |
| 20 | Visual Acuity Reduced | 64 | 5.3 | 5.3 | signal |
| 21 | Photophobia | 34 | 5.0 | 5.0 | signal |
| 22 | End Stage Renal Disease | 31 | 4.6 | 4.6 | signal |
| 23 | Dry Eye | 80 | 4.5 | 4.6 | signal |
| 24 | Lacrimation Increased | 49 | 4.5 | 4.5 | signal |
| 25 | Vasculitis | 19 | 4.5 | 4.5 | signal |
| 26 | Nocturia | 17 | 3.9 | 3.9 | signal |
| 27 | Cataract | 78 | 3.6 | 3.6 | signal |
| 28 | Eye Disorder | 42 | 3.5 | 3.5 | signal |
| 29 | Vision Blurred | 174 | 3.5 | 3.6 | signal |
| 30 | Eye Haemorrhage | 17 | 3.5 | 3.5 | signal |
| 31 | Macular Degeneration | 15 | 3.5 | 3.5 | signal |
| 32 | Dizziness Postural | 12 | 3.4 | 3.4 | signal |
| 33 | Blindness | 50 | 3.4 | 3.4 | signal |
| 34 | Eye Infection | 12 | 2.9 | 2.9 | signal |
| 35 | Chronic Kidney Disease | 82 | 2.9 | 3.0 | signal |
| 36 | Product Use Complaint | 16 | 2.8 | 2.8 | signal |
| 37 | Visual Impairment | 126 | 2.8 | 2.8 | signal |
| 38 | Renal Tubular Necrosis | 10 | 2.8 | 2.8 | signal |
| 39 | Hemiparesis | 17 | 2.7 | 2.7 | signal |
| 40 | Blood Pressure Fluctuation | 24 | 2.7 | 2.7 | signal |
| 41 | Subarachnoid Haemorrhage | 10 | 2.7 | 2.7 | signal |
| 42 | Product Packaging Issue | 9 | 2.7 | 2.7 | signal |
| 43 | Therapy Non-responder | 43 | 2.7 | 2.7 | signal |
| 44 | Muscle Atrophy | 12 | 2.6 | 2.6 | signal |
| 45 | Eyelid Oedema | 11 | 2.6 | 2.6 | signal |
| 46 | Hypomagnesaemia | 13 | 2.6 | 2.6 | signal |
| 47 | Eyelid Ptosis | 9 | 2.4 | 2.4 | signal |
| 48 | Electrolyte Imbalance | 10 | 2.4 | 2.4 | signal |
| 49 | Urosepsis | 8 | 2.4 | 2.4 | signal |
| 50 | Ischaemic Stroke | 15 | 2.3 | 2.3 | signal |
| 51 | Eye Swelling | 31 | 2.3 | 2.3 | signal |
| 52 | Skin Laceration | 9 | 2.3 | 2.3 | signal |
| 53 | Bradycardia | 44 | 2.3 | 2.3 | signal |
| 54 | Hospice Care | 8 | 2.2 | 2.2 | signal |
| 55 | Haematemesis | 20 | 2.2 | 2.2 | signal |
| 56 | Body Height Decreased | 8 | 2.0 | 2.0 | no signal |
| 57 | Respiratory Depression | 9 | 2.0 | 2.0 | no signal |
| 58 | Dry Mouth | 59 | 2.0 | 2.0 | signal |
| 59 | Drug Hypersensitivity | 139 | 2.0 | 2.0 | no signal |
| 60 | Incorrect Route Of Product Administration | 12 | 2.0 | 2.0 | no signal |
| 61 | Blood Calcium Decreased | 8 | 1.9 | 1.9 | no signal |
| 62 | Product Administration Error | 14 | 1.9 | 1.9 | no signal |
| 63 | Dry Throat | 7 | 1.9 | 1.9 | no signal |
| 64 | Hypocalcaemia | 13 | 1.9 | 1.9 | no signal |
| 65 | Inflammation | 35 | 1.9 | 1.9 | no signal |
| 66 | Drug Intolerance | 65 | 1.9 | 1.9 | no signal |
| 67 | Gout | 12 | 1.8 | 1.8 | no signal |
| 68 | Transfusion | 7 | 1.8 | 1.8 | no signal |
| 69 | Localised Infection | 16 | 1.8 | 1.8 | no signal |
| 70 | Hallucination | 49 | 1.8 | 1.8 | no signal |
| 71 | Iron Deficiency Anaemia | 6 | 1.8 | 1.8 | no signal |
| 72 | Haemoptysis | 18 | 1.8 | 1.8 | no signal |
| 73 | Oesophagitis | 7 | 1.8 | 1.8 | no signal |
| 74 | Hepatocellular Injury | 9 | 1.7 | 1.7 | no signal |
| 75 | Blood Urine Present | 12 | 1.7 | 1.7 | no signal |
| 76 | Mydriasis | 8 | 1.7 | 1.7 | no signal |
| 77 | Unresponsive To Stimuli | 16 | 1.7 | 1.7 | no signal |
| 78 | Intentional Dose Omission | 17 | 1.7 | 1.7 | no signal |
| 79 | Sinus Bradycardia | 6 | 1.7 | 1.7 | no signal |
| 80 | Ear Pain | 12 | 1.7 | 1.7 | no signal |
| 81 | Depressed Level Of Consciousness | 24 | 1.7 | 1.7 | no signal |
| 82 | Acute Kidney Injury | 91 | 1.6 | 1.6 | no signal |
| 83 | Heart Rate Decreased | 21 | 1.6 | 1.6 | no signal |
| 84 | Mass | 8 | 1.6 | 1.6 | no signal |
| 85 | Lymphopenia | 8 | 1.6 | 1.6 | no signal |
| 86 | Cellulitis | 28 | 1.5 | 1.5 | no signal |
| 87 | Pulmonary Thrombosis | 6 | 1.5 | 1.5 | no signal |
| 88 | Gastroenteritis | 8 | 1.5 | 1.5 | no signal |
| 89 | Feeling Cold | 15 | 1.5 | 1.5 | no signal |
| 90 | Metabolic Acidosis | 17 | 1.5 | 1.5 | no signal |
| 91 | Sneezing | 12 | 1.5 | 1.5 | no signal |
| 92 | Rib Fracture | 11 | 1.5 | 1.5 | no signal |
| 93 | Upper Gastrointestinal Haemorrhage | 9 | 1.5 | 1.5 | no signal |
| 94 | Atrial Fibrillation | 52 | 1.5 | 1.5 | no signal |
| 95 | Renal Injury | 16 | 1.5 | 1.5 | no signal |
| 96 | Squamous Cell Carcinoma | 5 | 1.5 | 1.5 | no signal |
| 97 | Internal Haemorrhage | 6 | 1.4 | 1.4 | no signal |
| 98 | Autoimmune Disorder | 5 | 1.4 | 1.4 | no signal |
| 99 | Therapy Change | 5 | 1.4 | 1.4 | no signal |
| 100 | Tachypnoea | 7 | 1.4 | 1.4 | no signal |
| 101 | Ankle Fracture | 8 | 1.4 | 1.4 | no signal |
| 102 | Orthostatic Hypotension | 9 | 1.4 | 1.4 | no signal |
| 103 | Balance Disorder | 44 | 1.4 | 1.4 | no signal |
| 104 | Peripheral Coldness | 7 | 1.4 | 1.4 | no signal |
| 105 | Covid-19 Pneumonia | 6 | 1.4 | 1.4 | no signal |
| 106 | Skin Ulcer | 13 | 1.4 | 1.4 | no signal |
| 107 | Dementia | 14 | 1.4 | 1.4 | no signal |
| 108 | Blood Test Abnormal | 7 | 1.4 | 1.4 | no signal |
| 109 | Back Disorder | 8 | 1.3 | 1.3 | no signal |
| 110 | Red Blood Cell Count Decreased | 14 | 1.3 | 1.3 | no signal |
| 111 | Impaired Quality Of Life | 7 | 1.3 | 1.3 | no signal |
| 112 | International Normalised Ratio Increased | 14 | 1.3 | 1.3 | no signal |
| 113 | Fall | 161 | 1.3 | 1.3 | no signal |
| 114 | Frequent Bowel Movements | 13 | 1.3 | 1.3 | no signal |
| 115 | Pharyngitis | 6 | 1.3 | 1.3 | no signal |
| 116 | Weight Fluctuation | 5 | 1.3 | 1.3 | no signal |
| 117 | Hallucination, Visual | 10 | 1.3 | 1.3 | no signal |
| 118 | Cholestasis | 9 | 1.3 | 1.3 | no signal |
| 119 | Post Procedural Complication | 9 | 1.3 | 1.3 | no signal |
| 120 | Haemorrhage Intracranial | 7 | 1.3 | 1.3 | no signal |
| 121 | Blood Pressure Systolic Increased | 9 | 1.3 | 1.3 | no signal |
| 122 | Economic Problem | 7 | 1.2 | 1.2 | no signal |
| 123 | Basal Cell Carcinoma | 7 | 1.2 | 1.2 | no signal |
| 124 | Asthma | 50 | 1.2 | 1.2 | no signal |
| 125 | Hair Texture Abnormal | 6 | 1.2 | 1.2 | no signal |
| 126 | Impaired Driving Ability | 5 | 1.2 | 1.2 | no signal |
| 127 | Drug Ineffective | 575 | 1.2 | 1.2 | no signal |
| 128 | Personality Change | 4 | 1.2 | 1.2 | no signal |
| 129 | Toxicity To Various Agents | 71 | 1.2 | 1.2 | no signal |
| 130 | Polyneuropathy | 5 | 1.2 | 1.2 | no signal |
| 131 | Renal Failure Acute | 18 | 1.1 | 1.1 | no signal |
| 132 | Pharyngeal Swelling | 4 | 1.1 | 1.1 | no signal |
| 133 | Haematochezia | 23 | 1.1 | 1.1 | no signal |
| 134 | Electrocardiogram Qt Prolonged | 15 | 1.1 | 1.1 | no signal |
| 135 | Affect Lability | 4 | 1.1 | 1.1 | no signal |
| 136 | Pulmonary Arterial Hypertension | 6 | 1.1 | 1.1 | no signal |
| 137 | Inability To Afford Medication | 4 | 1.1 | 1.1 | no signal |
| 138 | Lactic Acidosis | 13 | 1.1 | 1.1 | no signal |
| 139 | Treatment Noncompliance | 22 | 1.1 | 1.1 | no signal |
| 140 | Throat Irritation | 18 | 1.1 | 1.1 | no signal |
| 141 | Cyst | 5 | 1.1 | 1.1 | no signal |
| 142 | Dermatitis Allergic | 5 | 1.1 | 1.1 | no signal |
| 143 | Rash Papular | 9 | 1.1 | 1.1 | no signal |
| 144 | Upper Limb Fracture | 8 | 1.1 | 1.1 | no signal |
| 145 | Hot Flush | 30 | 1.1 | 1.1 | no signal |
| 146 | Product Prescribing Issue | 8 | 1.1 | 1.1 | no signal |
| 147 | Helicobacter Infection | 4 | 1.1 | 1.1 | no signal |
| 148 | Injection Site Discomfort | 4 | 1.1 | 1.1 | no signal |
| 149 | Product Dose Omission Issue | 110 | 1.1 | 1.1 | no signal |
| 150 | Dermatitis | 8 | 1.1 | 1.1 | no signal |
| 151 | Ejection Fraction Decreased | 6 | 1.1 | 1.1 | no signal |
| 152 | Nodule | 5 | 1.1 | 1.1 | no signal |
| 153 | Platelet Count Increased | 5 | 1.1 | 1.1 | no signal |
| 154 | Full Blood Count Abnormal | 4 | 1.0 | 1.0 | no signal |
| 155 | Respiratory Tract Congestion | 6 | 1.0 | 1.0 | no signal |
| 156 | Middle Insomnia | 7 | 1.0 | 1.0 | no signal |
| 157 | Blood Creatine Phosphokinase Increased | 11 | 1.0 | 1.0 | no signal |
| 158 | Hip Fracture | 12 | 1.0 | 1.0 | no signal |
| 159 | Malignant Melanoma | 5 | 1.0 | 1.0 | no signal |
| 160 | Hypoacusis | 16 | 1.0 | 1.0 | no signal |
| 161 | Hypoglycaemia | 18 | 1.0 | 1.0 | no signal |
| 162 | Gastrointestinal Haemorrhage | 31 | 1.0 | 1.0 | no signal |
| 163 | Injection Site Nodule | 4 | 1.0 | 1.0 | no signal |
| 164 | Melaena | 8 | 1.0 | 1.0 | no signal |
| 165 | Therapeutic Response Unexpected | 16 | 1.0 | 1.0 | no signal |
| 166 | Rebound Effect | 4 | 1.0 | 1.0 | no signal |
| 167 | Post Procedural Haemorrhage | 4 | 0.9 | 0.9 | no signal |
| 168 | Spinal Pain | 4 | 0.9 | 0.9 | no signal |
| 169 | Insurance Issue | 5 | 0.9 | 0.9 | no signal |
| 170 | Wrist Fracture | 4 | 0.9 | 0.9 | no signal |
| 171 | Blood Thyroid Stimulating Hormone Increased | 3 | 0.9 | 0.9 | no signal |
| 172 | Cardiac Failure Congestive | 26 | 0.9 | 0.9 | no signal |
| 173 | Cytokine Release Syndrome | 6 | 0.9 | 0.9 | no signal |
| 174 | Drug Effective For Unapproved Indication | 9 | 0.8 | 0.8 | no signal |
| 175 | Ankylosing Spondylitis | 4 | 0.8 | 0.8 | no signal |
| 176 | Therapy Interrupted | 21 | 0.8 | 0.8 | no signal |
| 177 | Product Quality Issue | 41 | 0.8 | 0.8 | no signal |
| 178 | Expired Product Administered | 10 | 0.8 | 0.8 | no signal |
| 179 | Product Dose Omission In Error | 8 | 0.8 | 0.8 | no signal |
| 180 | Product Odour Abnormal | 3 | 0.8 | 0.8 | no signal |
| 181 | Product Substitution Issue | 16 | 0.8 | 0.8 | no signal |
| 182 | Product Administered At Inappropriate Site | 5 | 0.8 | 0.8 | no signal |
| 183 | Fluid Overload | 4 | 0.7 | 0.7 | no signal |
| 184 | Blood Glucose Decreased | 13 | 0.7 | 0.7 | no signal |
| 185 | Myocarditis | 3 | 0.7 | 0.7 | no signal |
| 186 | Underdose | 19 | 0.7 | 0.7 | no signal |
| 187 | Product Dose Omission | 17 | 0.7 | 0.7 | no signal |
| 188 | Plasma Cell Myeloma | 10 | 0.7 | 0.7 | no signal |
| 189 | Product Physical Issue | 5 | 0.7 | 0.7 | no signal |
| 190 | Extra Dose Administered | 10 | 0.7 | 0.7 | no signal |
| 191 | Drug Effect Incomplete | 9 | 0.7 | 0.7 | no signal |
| 192 | Dry Skin | 32 | 0.7 | 0.7 | no signal |
| 193 | Incorrect Dose Administered By Device | 6 | 0.6 | 0.6 | no signal |
| 194 | Device Use Issue | 4 | 0.6 | 0.6 | no signal |
| 195 | Incorrect Product Storage | 3 | 0.6 | 0.6 | no signal |
| 196 | Drug Administration Error | 7 | 0.6 | 0.6 | no signal |
| 197 | Lung Neoplasm Malignant | 9 | 0.6 | 0.6 | no signal |
| 198 | Device Occlusion | 3 | 0.6 | 0.6 | no signal |
| 199 | Accidental Exposure To Product | 21 | 0.6 | 0.6 | no signal |
| 200 | Diabetic Ketoacidosis | 5 | 0.6 | 0.6 | no signal |
| 201 | Dermatitis Atopic | 10 | 0.5 | 0.5 | no signal |
| 202 | Incorrect Dose Administered | 45 | 0.5 | 0.5 | no signal |
| 203 | Injury Associated With Device | 4 | 0.5 | 0.5 | no signal |
| 204 | Glycosylated Haemoglobin Increased | 5 | 0.5 | 0.5 | no signal |
| 205 | Psoriasis | 25 | 0.5 | 0.5 | no signal |
| 206 | Injection Site Mass | 7 | 0.5 | 0.5 | no signal |
| 207 | Bone Density Decreased | 6 | 0.5 | 0.5 | no signal |
| 208 | No Adverse Event | 33 | 0.5 | 0.5 | no signal |
| 209 | Product Dispensing Error | 4 | 0.5 | 0.5 | no signal |
| 210 | Wrong Technique In Product Usage Process | 37 | 0.5 | 0.5 | no signal |
| 211 | Injection Site Pruritus | 12 | 0.5 | 0.5 | no signal |
| 212 | Inappropriate Schedule Of Drug Administration | 13 | 0.5 | 0.5 | no signal |
| 213 | Needle Issue | 5 | 0.5 | 0.5 | no signal |
| 214 | Palmar-plantar Erythrodysaesthesia Syndrome | 4 | 0.5 | 0.5 | no signal |
| 215 | Device Issue | 14 | 0.4 | 0.4 | no signal |
| 216 | Extrapyramidal Disorder | 4 | 0.4 | 0.4 | no signal |
| 217 | Skin Irritation | 7 | 0.4 | 0.4 | no signal |
| 218 | Device Dislocation | 6 | 0.4 | 0.4 | no signal |
| 219 | Incorrect Route Of Drug Administration | 5 | 0.4 | 0.4 | no signal |
| 220 | Exposure Via Skin Contact | 3 | 0.4 | 0.4 | no signal |
| 221 | Drug Dose Omission | 22 | 0.4 | 0.4 | no signal |
| 222 | Product Storage Error | 11 | 0.3 | 0.3 | no signal |
| 223 | Product Complaint | 3 | 0.3 | 0.3 | no signal |
| 224 | Device Delivery System Issue | 3 | 0.3 | 0.3 | no signal |
| 225 | Injection Site Haemorrhage | 9 | 0.3 | 0.3 | no signal |
| 226 | Pancreatic Carcinoma | 3 | 0.3 | 0.3 | no signal |
| 227 | Device Difficult To Use | 6 | 0.2 | 0.2 | no signal |
| 228 | Drug Withdrawal Syndrome | 7 | 0.2 | 0.2 | no signal |
| 229 | Device Leakage | 3 | 0.2 | 0.2 | no signal |
| 230 | Wrong Technique In Device Usage Process | 3 | 0.2 | 0.2 | no signal |