Comparing Pain Improvement for Intravenous Versus Oral Acetaminophen in Acute Pelvic Pain

Starting soon · Phase 4 · Has a placebo group

Conditions studied: Pelvic Pain

In brief

The investigator team proposes a randomized, double-blind, double-dummy comparative effectiveness trial conducted in two urban emergency departments (EDs) in the Bronx, New York. This study is designed to determine the relative efficacy of IV acetaminophen compared to PO acetaminophen in treating pelvic pain. This design focuses on the early onset of action and short-term efficacy, which may better capture potential differences between IV and PO acetaminophen in the acute ED setting.

Key facts

Study ID

NCT07595302

Run by

Montefiore Medical Center

People needed

140

Starts

2026-07-30

Expected to finish

2027-06-30

Last updated by the study team

2026-05-20

Who can join

Age: 16 and older, up to 50. Sex: female. Healthy volunteers: not accepted.

You may qualify if…

• Female sex at birth
• Presentation to the Emergency Department (ED) with pelvic pain
• Baseline numeric pain score (NRS) ≥4
• Ability to provide informed consent in English or Spanish

You may not qualify if…

• Receipt of any analgesic medication within 2 hours or acetaminophen within 6 hours
• Known allergy or intolerance to acetaminophen

Where it is running

• Montefiore Medical Center — The Bronx, New York, United States

Full record on ClinicalTrials.gov

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