Hi Joyl

A warm welcome to you here. Listen to Davey he has some good advise. I think caffeine is bad full stop anyway, but I am just like you and LOVE my cups of tea throughout the day. I am not on Lithium so I can't answer your question.

I am on valium as and when I need it to get to sleep at night but I find that if I have a cup of tea after 6pm I can't go off to sleep so easily and am too wired - then have to take a valium! How about trying caffeine free tea with a little sugar - or maybe half and half.

Do take care and let us know how you are doing.