 [ Symptoms ] can lexapro be taken simultaneously with dextromethorphan hbr i had acute endo carditis 2004 and had emergency surgery to replace my mitral valve with a porcine valve i am now 71 and have a viral infection that is not responding to a z pac i started on adult tussin dm nd mucinex this morning worried that this may not be good for me because i take lexapro 10 m daily [ Disease ] if overdose is suspected contact your local poison control center or emergency room immediately us residents can call the us national poison hotline at 1 800 222 1222 canada residents can call a provincial poison control center symptoms of overdose may include severe mentalmood changes e g confusion hallucinations seizures irregular heartbeat severe restlessness fast breathing