Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Medications and medical conditions included in exclusion criteria.
| Medications |
| Topical nasal vasoconstrictors (Afrin®) |
| Cocaine |
| Nifedipine (Adalate®, Procardia®) |
| Cancer medications |
| Medical conditions |
| Nasal infections (colds, flu, stuffy nose) |
| History of smoking |
| History of stroke |
| Diabetes mellitus |
| Brain tumor |
| History of head trauma |
| Parkinsonism |
