I use about 40-50 ml distilled water and 5 of my probiotic caps. Use around 120 ml warm water first just to clean things out a little and make sure I wouldn't expel the probiotic right back out. Then use the probiotic enema. Should be able to retain it. Get it in, and if you can when you are sure you are holding it, prop your back up against the wall with legs up in the air. That'll help things get further up in the colon, and you won't be as prone to expel when you get up and about.
Proctitis DX 1999, Pancolitis DX 2008
Lialda 1 day
Vitamin E Enemas as needed