Combined Medication for Improved Analgesia in Superficial Pain

Completed · Phase 3 · Has a placebo group

Conditions studied: Pain

In brief

This research study is being done to assess if a combination of medications can enhance the relief of superficial pain (pain at the surface of the skin, such as sunburn pain). The investigators also want to find out if certain genes may be linked to individual differences in experienced efficacy of pain killers. The combination of medications under investigation is diclofenac and atropine. Diclofenac has been approved by the U.S. Food and Drug Administration (FDA) to treat pain. Atropine has been approved by the FDA to treat certain types of poisoning, heartbeat problems, and other diseases but atropine is not approved to treat pain. However, atropine has been used for many years in different European countries to treat painful conditions such as stomach cramps.This research study will compare diclofenac and atropine to placebo.

Key facts

Study ID

NCT02194088

Run by

Brigham and Women's Hospital

People needed

100

Starts

2014-04-01

Expected to finish

2017-06-01

Last updated by the study team

2018-07-03

Who can join

Age: 18 and older, up to 40. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Male and female healthy volunteers.
• 18-40 years of age.
• Ability to read and understand English; English can be a second language provided that the participant feels that he/she understand all the questions used in the assessment measures.

You may not qualify if…

• Chronic pain condition or chronic or current treatment with any pain medication.
• Presence of any illness or medication use that is judged to interfere with the trial. For example: psychiatric disorder, medication that can influence cognition or emotional processing, i.e. sleep medication, antidepressants, anti-convulsants or opioids.
• Unwillingness to receive brief pain stimulation administered by a heat probe on the hand.
• Allergy or contra-indication to receiving nonsteroidal anti-inflammatory medication and atropine (Treatment with antidepressants, neuroleptics, antihistaminic, levodopa, anti-acids. Pregnancy, breast-feeding, myasthenia gravis, pyloric stenosis, gastro-esophageal reflux, gastric ulcer, constipation, prostatic enlargement, glaucoma, cardio-pulmonary condition -including tachycardia, arrhythmia, arteriosclerosis-, hyperthyroidism, high blood pressure, genetic disease, kidney failure)

Where it is running

• Brigham And Women's Hospital — Boston, Massachusetts, United States

Full record on ClinicalTrials.gov

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