Please don't drink tea, even decaf. Tea, (including decaf) contains Tannin. Tannin, is used to soften leather so imagine what it does to the bladder ! Also do not drink cranberry, cranberry irritates the bladder which is why people drink it just when they have an infection as it irritates the bladder wall to get rid of stuff. I found all this out on
www.cobfoundation.org/ this is the cystitis and over active bladder foundation, neither drink orange juice - citrus is an acid.
Also look at your diet, are you acidic? Get some ph strips from the internet, if you are acid in your urine then you probably are in your blood too, leave off acid foods/look up acid & alkaline foods on the internet. For example, meat is acid, vegetables are not. From yesterday I cut out red meat which is hugely acidic. I don't think I can cut out meat completely so I shall eat chicken and fish and see how I get on. You can get ph drops to put into your drinks to make them more alkaline.
Oh and sugar, bacteria sticks to it and breeds.
I now drink just herbal tea, camomile, peppermint and Red bush tea and I sip water and I don't drink after 8pm.