Adverse events72

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

1 to 20 of 72

Type	Event	Organ system	Group	Affected	At risk
other	Abdominal Pain or Cramps	Gastrointestinal disorders	Placebo	3	19
other	Abdominal Pain or Cramps	Gastrointestinal disorders	Varenicline	4	19
other	Abdominal Pain or Cramps	Gastrointestinal disorders	Naltrexone	4	15
other	Yellow Eyes	Eye disorders	Placebo	2	19
other	Yellow Eyes	Eye disorders	Varenicline	1	19
other	Yellow Eyes	Eye disorders	Naltrexone	1	15
other	Nausea or Vomiting	Gastrointestinal disorders	Placebo	1	19
other	Nausea or Vomiting	Gastrointestinal disorders	Varenicline	5	19
other	Nausea or Vomiting	Gastrointestinal disorders	Naltrexone	3	15
other	Irritability or Anger	Psychiatric disorders	Placebo	5	19
other	Irritability or Anger	Psychiatric disorders	Varenicline	6	19
other	Irritability or Anger	Psychiatric disorders	Naltrexone	10	15
other	Increased Desire for Sex	Reproductive system and breast disorders	Placebo	6	19
other	Increased Desire for Sex	Reproductive system and breast disorders	Varenicline	5	19
other	Increased Desire for Sex	Reproductive system and breast disorders	Naltrexone	5	15
other	Nervousness	Psychiatric disorders	Placebo	5	19
other	Nervousness	Psychiatric disorders	Varenicline	5	19
other	Nervousness	Psychiatric disorders	Naltrexone	7	15
other	Ringing in the Ears	Ear and labyrinth disorders	Placebo	0	19
other	Ringing in the Ears	Ear and labyrinth disorders	Varenicline	2	19

Source ClinicalTrials.govtrials-2026-11-12-0.5.0

ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
ClinicalTrials.govNo license stated
NIH RePORTER's clinical studies and project filesPublic domain

Each source's terms

ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
ClinicalTrials.govnone stated
NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this list from software.

Twenty rows a page, as JSON. No key.

GET https://conductscience.org/api/trials/v1/NCT04249882/events