Targeting Interindividual Variability in NSAID Responses to Mitigate Chronic Pelvic Pain Risk in Dysmenorrhea (NSAID HEAL)

Summary

The goal of this clinical trial is to learn if NSAIDs (i.e. naproxen sodium) can treat menstrual pain and prevent the development of chronic pelvic pain in menstruating adults with painful periods. The main questions it aims to answer are: * Can non-menstrual pelvic pain reduction be predicted by menstrual pain response to NSAIDs? * Will participants with the largest reductions in multi-site sensitivity following NSAID therapy have the largest reductions in non-menstrual pelvic pain? Researchers will compare naproxen sodium to a placebo (a look-alike substance that contains no drug) to see if naproxen sodium works to treat painful periods. Participants will: * Take naproxen sodium or placebo during several days of their menstrual period every month for 1 year. * Complete computer questionnaires and tests from home every 3 months. * Complete at-home urine tests to measure hormones every few days for 1-year. * Use a pin-prick to collect a small spot of blood, and use a pad or tampon to collect a sample of menstrual blood, and bring it to the research site twice over a 1-year period. * Come to the research site twice over a 1-year period to complete sensory assessments and undergo a blood draw. The major goal of the study is to develop a multivariable statistical model (see https://grants.nih.gov/grants/guide/rfa-files/RFA-NS-24-021.html ) describing the factors that effectiveness of pain medication and risk for chronic pain

Eligibility

Age range

18–35 years

Sex

Female

Healthy volunteers

No

Interventions

• Drug
  Naproxen Sodium 550mg

  Participants will receive Naproxen Sodium 550 mg oral tablet, administered twice daily for the first 48 hours of their menstrual period, for 1-year. Naproxen Sodium is a nonsteroidal anti-inflammatory drug (NSAID) used for pain relief and inflammation reduction. 550 mg naproxen sodium is the highest FDA-approved starting dosage, equivalent to 500 mg naproxen; the sodium formulation quickens absorption.

• Drug
  Placebo

  Participants will receive a placebo oral tablet, identical in appearance to Drug X, administered twice daily for the first 48 hours of their menstrual period, for 1-year. The placebo contains inactive ingredients with no known therapeutic effect.

• Drug
  Extended Release Acetaminophen (650 mg)

  Participants may take extended release acetaminophen 650mg oral tablet as needed for breakthrough menstrual pain. Participants will be instructed to take 1 dose of acetaminophen after 2 hours of taking a dose of either naproxen sodium or placebo, only if needed for pain relief. They are able to take an additional dose of acetaminophen after 2 more hours have elapsed for continued breakthrough symptoms. Use of rescue medication will be monitored and recorded.

Location