Member-only storyMaking Sense of OTC AntihistaminesWhat do OTC medications for upset stomach, heartburn, insomnia, and itchy skin all have in common? They are antihistamines, and understanding a bit more about them can help better navigate the aisles of your local drugstore during your next visit.Zack West·Follow6 min read·Mar 4, 2021--ShareSource: Optimus Medica