Abruptly stopping the antihistamine cetirizine (Zyrtec) led to unbelievable itching. The doctor who reported this had not seen it in the medical literature.
Antihistamines can calm allergic reactions. But when some people stop cetirizine or levocetirizine, they may experience unbearable itching!
Many countries permit pharmacists to prescribe behind the counter drugs such as antivirals, antibiotics, and asthma meds. Why not in the US?