Ondansetron
  
Side effects 
	
		
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| Side effect | Data for drug | Placebo | Labels | 
|  | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 
| Wound | 10.6% - 27.6% | 11.8% - 30.5% |  |  | x |  | x | x | x | x |  |  |  |  |  |  |  |  |  | x | x | x | 
| Drowsiness | 5.43% - 20.4% | 6.76% - 23% |  |  | x |  | x | x | x | x |  | x | x | x | x |  |  | x |  | x | x | x | 
| Headache | very common, 5.83% - 27.2% | 5.08% - 15% | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Musculoskeletal pain | 10.4% | 10.8% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x | 
| Fatigue | 2.29% - 13.2% | 2.29% - 5.48% |  |  |  | x | x | x | x | x |  |  |  |  |  |  |  |  |  |  | x | x | 
| Malaise | 2.29% - 13.2% | 2.29% - 5.48% |  |  | x | x | x | x | x |  |  |  |  |  |  |  |  |  |  |  | x | x | 
| Hypoxia | 8.91% | 6.59% |  |  |  | x | x | x | x | x |  |  |  |  |  |  |  |  |  | x |  |  | 
| Body temperature increased | 1.83% - 8.18% | 1.1% - 6.4% | x |  |  | x | x | x | x | x | x | x | x | x | x |  |  | x |  | x | x | x | 
| Genital disorder female | 6.55% | 6.21% |  |  |  | x | x | x | x | x |  |  |  |  |  |  |  |  |  |  |  |  | 
| Constipation | common, 0.382% - 9.09% | 0.382% | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Anxiety | 2.01% - 6.49% | 2.93% - 6.43% |  |  | x | x | x | x | x | x |  |  |  |  |  |  |  |  |  | x | x | x | 
| Agitation | 2.01% - 6.49% | 2.93% - 6.43% |  |  |  | x | x | x | x | x |  |  |  |  |  |  |  |  |  | x | x | x | 
| Bradycardia | postmarketing — 5.82% | 5.65% |  | x |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Dizziness | postmarketing — 0.01% - 12.2% | 4.58% - 16.1% |  | x |  | x | x | x | x | x | x | x | x | x | x | x |  | x | x | x | x | x | 
| Shivering | 5.09% - 6.95% | 5.65% - 7.13% |  |  | x |  | x | x | x | x |  |  |  |  |  |  |  |  |  | x | x | x | 
| Urinary retention | 3.11% - 5.09% | 2.74% - 3.39% |  |  |  | x | x | x | x | x |  |  |  |  |  |  |  |  |  | x | x | x | 
| Dry mouth | common |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x | x |  |  | 
| Burning rectal | common |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Sensation of warmth | common |  |  | x |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Hypotension | postmarketing — 1.83% - 4.91% | 2.19% - 6.03% | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Pruritus | 1.65% - 4.91% | 0.548% - 3.77% |  |  |  | x | x | x | x | x |  | x | x | x | x |  |  | x |  | x | x | x | 
| Diarrhoea | 1.79% - 44% | 0.898% - 18% | x |  | x | x | x | x | x | x | x | x | x | x | x |  |  | x |  |  | x | x | 
| Injection site reaction | common, 3.84% | 3.29% |  | x |  |  |  |  |  |  |  | x | x | x | x |  |  | x |  | x | x | x | 
| Chest pain | postmarketing — 2.19% | 2.74% | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Dysuria | 2.01% | 1.65% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x | x | 
| Paraesthesia | 1.65% | 0.366% |  |  |  |  |  |  |  |  |  | x | x | x | x |  |  | x |  |  | x | x | 
| Feeling cold | 1.65% | 1.46% |  |  |  |  |  |  |  |  |  | x | x | x | x |  |  | x |  |  | x | x | 
| Post procedural pain | 1.19% | 1.8% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  | 
| Dyskinesia | uncommon |  |  | x |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | x |  |  | 
| Movement disorder | uncommon |  |  | x |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | x |  |  | 
| Convulsion | uncommon |  |  | x |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x | x |  |  | 
| Warmth | 1% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x |  |  |  | 
| Raised liver function tests | postmarketing, uncommon |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x | x |  |  | 
| Anaphylactic shock | postmarketing, rare |  |  | x | x | x | x | x | x | x | x |  |  |  |  | x | x | x | x | x | x | x | 
| Angina pectoris | postmarketing |  | x |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |  | x | x | 
| Angioedema | postmarketing |  |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |  | x | x | 
| Arrhythmia | postmarketing, uncommon |  |  | x |  |  |  |  |  |  | x | x | x | x | x | x | x | x | x | x | x | x | 
| Atrial fibrillation | postmarketing |  |  |  |  |  |  |  |  |  | x | x | x | x | x | x | x | x | x |  | x | x | 
| Bronchospasm | postmarketing, 0.595% | 1.8% |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Neoplasm malignant | postmarketing |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  |  | x |  |  |  |  | 
| Cardiovascular disorder | postmarketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x |  |  |  | 
| Dyspnoea | postmarketing |  |  |  | x | x | x | x | x | x | x | x | x | x | x |  |  | x |  |  | x | x | 
| Toxic epidermal necrolysis | very rare, postmarketing |  |  |  |  |  |  |  |  | x |  |  |  |  |  |  | x | x |  |  |  |  | 
| Eye disorder | postmarketing |  |  | x |  | x |  |  | x | x | x |  | x | x | x | x | x | x | x | x | x | x | 
| Flushing | postmarketing, common |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Hiccups | postmarketing, uncommon |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Hypersensitivity | postmarketing |  |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |  | x | x | 
| Type I hypersensitivity | rare |  |  | x |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x | x |  |  | 
| Laryngeal oedema | postmarketing |  |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |  | x | x | 
| Laryngospasm | postmarketing |  |  |  | x | x | x | x | x | x | x | x | x | x | x |  | x | x | x | x | x | x | 
| Mediastinal disorder | postmarketing |  |  | x |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x | x |  |  | 
| Myocardial infarction | postmarketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x |  |  |  | 
| Nervous system disorder | postmarketing |  |  | x |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x | x |  |  | 
| Pain | postmarketing, 2.19% | 2.93% |  |  |  |  |  |  |  |  | x | x | x | x | x |  |  | x | x | x | x | x | 
| Palpitations | postmarketing |  |  |  |  |  |  |  |  |  | x | x | x | x | x | x | x | x | x |  | x | x | 
| Shock | postmarketing |  |  |  | x | x | x | x | x | x | x | x | x | x | x |  |  | x |  |  | x | x | 
| Stevens-Johnson syndrome | postmarketing |  |  |  |  |  |  |  |  | x |  |  |  |  |  |  | x | x |  |  |  |  | 
| Stridor | postmarketing |  |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |  | x | x | 
| Syncope | postmarketing |  |  |  |  |  |  |  |  |  | x | x | x | x | x | x | x | x | x |  | x | x | 
| Supraventricular tachycardia | postmarketing |  |  |  |  |  |  |  |  |  | x | x | x | x | x | x | x | x | x |  | x | x | 
| Torsade de pointes | rare |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Tremor | postmarketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x |  |  |  | 
| Urticaria | postmarketing |  |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |  | x | x | 
| Angiopathy | rare |  |  | x |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Vomiting | postmarketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Hepatic failure | postmarketing |  |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |  | x | x | 
| Oculogyric crisis | postmarketing, uncommon |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Ventricular extrasystoles | postmarketing |  |  |  |  |  |  |  |  |  | x | x | x | x | x | x | x | x | x |  | x | x | 
| Myocardial ischaemia | postmarketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x |  |  |  | 
| Opisthotonus | postmarketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x |  |  |  | 
| Orofacial dyskinesia | postmarketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x |  |  |  | 
| Accommodation disorder | postmarketing |  |  |  |  |  |  |  |  |  | x | x | x | x | x |  |  | x |  |  | x | x | 
| Blindness transient | very rare, postmarketing |  |  | x | x | x |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Atrioventricular block second degree | postmarketing |  |  |  |  |  |  |  |  |  | x | x | x | x | x | x | x | x | x |  | x | x | 
| Hepatobiliary disease | postmarketing |  |  | x |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x | x |  |  | 
| Redness | postmarketing |  |  |  |  |  |  |  |  |  | x | x | x | x | x |  |  | x | x |  | x | x | 
| Vision blurred | postmarketing |  |  | x |  |  |  |  |  |  | x | x | x | x | x | x |  | x | x | x | x | x | 
| Blindness | postmarketing |  |  | x |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x | x |  |  | 
| Electrocardiogram ST segment depression | postmarketing, uncommon |  |  | x |  |  |  |  |  |  | x | x | x | x | x | x | x | x | x | x | x | x | 
| Nausea postoperative | postmarketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Injection site burning | postmarketing |  |  |  |  |  |  |  |  |  | x | x | x | x | x |  |  | x |  |  | x | x | 
| Dystonic reaction | postmarketing — 0% - 5% | 0% | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Visual disturbance | rare |  |  | x |  |  |  |  |  |  |  |  |  |  |  | x |  |  | x | x |  |  | 
| Cardio-respiratory arrest | postmarketing |  |  |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |  |  | x | 
| Local reaction | postmarketing |  |  |  |  |  |  |  |  |  | x |  | x | x | x |  |  | x | x | x | x | x | 
| Electrocardiogram QT corrected interval prolonged | rare |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Lymphocyte transformation test positive | postmarketing |  |  |  |  |  |  |  |  |  |  | x | x | x | x |  |  | x |  |  |  |  | 
| Toxic skin eruption | very rare |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Abdominal pain |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x | x |  |  | 
| Asthenia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x |  |  |  | 
| Asthma |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Cough |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Ear disorder |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Rash |  |  | x |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | 
| Flatulence |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Gastrointestinal disorder |  |  |  | x |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Cardiac disorder |  |  |  | x |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Haemorrhage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Hypokalaemia |  |  | x |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |  | x | x | 
| Immune system disorder |  |  |  | x |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Liver disorder |  |  | x |  | x | x | x | x | x | x | x | x | x | x | x |  |  | x |  |  | x | x | 
| Sleep disturbance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Swelling |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Tachycardia |  |  | x |  | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |  | x | x | 
| Urinary tract infection |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x |  |  | 
| Aspartate aminotransferase increased |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | x | x |  | x |  |  |  | 
| Unspecified disorder of skin and subcutaneous tissue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Anaphylactoid reaction |  |  |  |  | x |  | x | x | x | x | x |  |  |  |  |  |  |  |  |  | x | x | 
| Akathisia | 0% - 6% | 0% | x |  |  |  |  |  |  |  | x |  |  |  |  |  |  |  |  |  |  | x | 
| Tonic-clonic seizures |  |  | x |  | x | x | x | x | x | x | x | x | x | x | x |  |  | x |  |  | x | x | 
	 
 
  Indications
	Information about indications was extracted from the indications and usage sections of the labels.
	
 
	  
	  
		| Side effects: | 14 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 31 | 
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		| Source: | Medsafe | 
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		| Side effects: | 34 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 39 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 42 | 
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		| Source: | FDA | 
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		| Side effects: | 43 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 44 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 45 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 48 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 49 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 51 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 52 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 52 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 53 | 
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		| Source: | Health Canada | 
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		| Side effects: | 55 | 
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		| Source: | Health Canada | 
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		| Side effects: | 55 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 57 | 
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		| Source: | Health Canada | 
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		| Side effects: | 59 | 
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		| Source: | medicines.org.au | 
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		| Side effects: | 61 | 
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		| Source: | FDA Structured Product Label | 
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		| Side effects: | 62 | 
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		| Source: | FDA Structured Product Label | 
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	Color scheme:
	  
	  standard – alternative
	  
	
	
|  |  | 100% | 
|  |  | 75% | 
|  |  | 50% | 
|  |  | 10% | 
|  |  | frequent (1% to 100%) | 
|  |  | infrequent (0.1% to 1%) | 
|  |  | rare (<0.1%) | 
|  |  | postmarketing | 
|  |  | 0% | 
|  |  | no frequency information | 
|  |  | not found on label |