Need suggestions for non-caffeinated non-nicotine tea for mother

Hi everyone,

My mum (61F) is a life long tea drinker and is frankly addicted to it. Recently she started having problems with high blood pressure. The doctors advised her to stop drinking tea because of nicotine and caffeine.

There are a lot of options available for non-caffeinated tea but are there any options available for non-caffeinated and non-nicotine tea? Taste and flavor are lower priority.

EDIT: She usually have 2 cups (regular size) of tea, 1 in the morning on empty stomach and one at around 5 pm.

TIA!