Is it safe to drink peppermint tea while taking amitriptyline & lorazepam?

No interactions. You can drink it without concern. The primary concern with teas is green tea lowering Coumadin (warfarin) levels by 50%. Thus, if you stop drinking it the levels double. Good question though. I had to look it up. Helps us all here stay on our toes and we learn a lot from questions such as yours.Have a good night.