Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. We all know the feeling—a throbbing in your throat that won’t go away. Coughing offers only a momentary respite as your sore throat worsens throughout the day. At times like these, many of us reach for a soothing lozenge to calm the irritation and provide some relief, at least for a short while. But what about when the tickle comes back and you reach for another throat lozenge? How many cough drops is too many cough drops? And what’s the worst that can happen if you go overboard? Dr. Kait Brown, clinical managing director at America’s Poison Centers , assures that dangerous cough drop overdoses are extremely rare. But that doesn’t mean we should pop them like candy. “What we get concerned about is the menthol within the cough drops, and rarely there may be some that have benzocaine, which is a local anaesthetic,” she says.…