http://www.medications.com/se/Tessalon+ Recent side effects for Tessalon Fri, 25 Oct 2002 22:09:13 -0400 http://www.medications.com/effect/view/1749 My 12 year old daughter went to the emergency room today with severe hives, joint inflamation, throat irritation, swelling in hands and feet. The doctors felt this was an adverse reaction to one dose of tessalon. http://www.medications.com/effect/view/1749