I don't know about the raspberry tea, but would think it would be OK as long as it has no added sweetener.
Personally, I don't eat fruit because it will cause painful cramping and diahreah. I am finding that I can occaisionally tolerate a little lemon juice, probably because there is very little Fructose in it.
Honestly, I would focus on healing the bowel first, before trying another liver cleanse. Not only may the lemon cause problems (I am sure the apple juice will) but the release of bile acids during the cleanse will certainly irritate the bowel. I would focus on one thing at a time.
Here in the US, you can go into any drugstore and buy the type of syringe that Sheldon recomends. It is usually with the ear cleaning products.