A proof of concept dosing study is a type of clinical study that evaluates the feasibility, safety, and efficacy of a new or experimental treatment. In this context, a proof of concept dosing study for naproxen sodium and acetaminophen would evaluate the potential benefits and risks of using a combination of these two drugs for the treatment of pain.

The primary goal of a proof of concept dosing study for naproxen sodium and acetaminophen would be to determine the optimal dose and dosing regimen for the combination of these two drugs. This would involve enrolling a small group of participants and administering varying doses of the two drugs to assess their effectiveness in relieving pain and their safety profile.

The study would also collect data on the pharmacokinetics (how the drugs are absorbed, distributed, metabolized, and eliminated by the body) and pharmacodynamics (how the drugs affect the body) of the combination of naproxen sodium and acetaminophen.

If the results of the proof of concept dosing study are positive, they would provide the basis for further studies to evaluate the efficacy and safety of the combination of naproxen sodium and acetaminophen in a larger population of patients. These results would also inform decisions about whether to move forward with the development of a new combination drug for the treatment of pain.