Nope, but you should check the ingredients to make sure there’s no questionable ingredient.
In most case the ingredients are just the various teas.
Once in a while it can contain barley malt or just malt, which is a problem for Pesach.
If they say gluten free, then you’re good too.
This is the same for Ashkenazim & Sephardim
michael aryeh 
Josh Wachtel 
Barry Gelman
Nope, but you should check the ingredients to make sure there’s no questionable ingredient.
In most case the ingredients are just the various teas.
Once in a while it can contain barley malt or just malt, which is a problem for Pesach.
If they say gluten free, then you’re good too.
This is the same for Ashkenazim & Sephardim