<s>[INST] I am Alan Richardson,I shall have DBS for management of the symptoms of my Parkison's disease on Friday next at St Josephs hospital in Phoenix. I have had PD since diagnosed in 1987.I have stopped taking selegiine Hcl., otherwise known as Eldepryl that I have taken since it was authorized in 1989 because of concern of interaction with drugs that I may get while knocked out  during the DBS procedure which dr. Ponce will perform on me while I am asleep. This is the new procedure.I shall advise my doctor and the surgeon Ponce as on MondayAm I confident I am doing the right thing. Thanksfor your advice [/INST] HIThank for asking to HCMThe main aim of the DBS surgery is to control the symptoms of Parkinson's  it is okay if you keep continue taking the medicine till the date of surgery more over in any surgical procedure patients being advise for drug history what to continue and what drug to stop so your surgeon will give you instruction prior to procedure, have great day. </s>