I have concern's about an 82yr old female friend who is taking medications for various problems, but my concerns are that she has come out with horrid black/blue bruising on her legs from her feet to her thighs, her meds are: Aledronic acid 70mg, Amitriptyline 10mg, sertraline 50mg, prednisolone 5mg,clopidogrel 75mg, bisoprolol 1.25mg, paracetamol+dihydrcodeine. my friend keeps having dizzy spells, weaking of her legs and she collapse, i am very concerned that the medication she is on are reacting with each other or that she should not be on certain one's, can you please please give me some advice please.