The FAA published a decision-making guide about OTCs on April 28, 2021.
A few important points:
- An OTC medicine is not safe simply because you don’t need a prescription.
- OTC medications commonly cause aeromedical side effects like sedation.
- Any medical problem, regardless of how or if it is treated, requires the pilot to consider 61.53 Prohibition on Operations During Medical Deficiency
You can download the advisory here: