“…Nasal delivery is being increasingly recognized as a route for therapeutic compounds and biopharmaceuticals. It has been used for topical nasal treatments such as antihistamines (Daneman & Prat, 2015) and corticosteroids (Rollema et al, 2022), for systemic delivery of analgesics (Johnson et al, 2016), sedatives, hormones (van Dijck et al, 2011), vaccines, and cardiovascular drugs (Lobaina Mato, 2019) through the nasal mucosa; and for topical administration for dry eye (Schallhorn et al, 2023). In addition, nasal delivery also offers a needleless and noninvasive method of drug delivery into the brain.…”