Adverse events16

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

1 to 16 of 16

Type	Event	Organ system	Group	Affected	At risk
other	Mild Headache	General disorders	Tolcapone	1	20
other	Mild Headache	General disorders	Placebo	0	20
other	Increased frequency in bowel movements	Gastrointestinal disorders	Tolcapone	1	20
other	Increased frequency in bowel movements	Gastrointestinal disorders	Placebo	0	20
other	Blood in stool	Gastrointestinal disorders	Tolcapone	1	20
other	Blood in stool	Gastrointestinal disorders	Placebo	0	20
other	Less frequent bowel movements	Gastrointestinal disorders	Tolcapone	0	20
other	Less frequent bowel movements	Gastrointestinal disorders	Placebo	1	20
other	Fatigue	General disorders	Tolcapone	0	20
other	Fatigue	General disorders	Placebo	1	20
other	Muscle aching	General disorders	Tolcapone	0	20
other	Muscle aching	General disorders	Placebo	1	20
other	Joint stiffness	General disorders	Tolcapone	0	20
other	Joint stiffness	General disorders	Placebo	1	20
other	Sleep problems	General disorders	Tolcapone	0	20
other	Sleep problems	General disorders	Placebo	1	20

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

Sources 3

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

Twenty rows a page, as JSON. No key.

GET https://conductscience.org/api/trials/v1/NCT03348930/events