Mucinex DSide Effects - XML FEED - Medications.com http://www.medications.com/se/Mucinex+D Recent side effects for Mucinex D I am not sure if these are side effects or not but I started taki Sat, 10 Nov 2007 16:48:46 -0500 http://www.medications.com/effect/view/24938 I am not sure if these are side effects or not but I started taking Mucinex-D about a month ago. Lately, I wake at night with puonding in my head and I've noticed my blood pressure is elevated by about 10 points diastolic. http://www.medications.com/effect/view/24938