Side effects

• adverse events described in trials comparing individuals taking oral cholera vaccine with those ingesting buffer without the vaccine were comparable and in the range of 11% to 14%
  
  
• based on passive reporting from clinical trials and post-marketing surveillance, mild gastro-intestinal symptoms (abdominal pain, cramping, diarrhoea, nausea) are the most commonly reported symptoms occurring at a frequency of 0.1% to 1%
  
  
• serious adverse events, including a flu-like syndrome, rash, arthralgia and paraesthesiae are rare, occurring in fewer than one per 10,000 doses distributed

Reference:

1. Immunisation Against Infectious Disease - "The Green Book".Chapter 14 Cholera (April 2019)