Here is info from the United ostomy association; they also have a card you can take with to the ER if you're in a place where they don't deal w/ostomies much (http://www.ostomy.org/ostomy_info/pubs/blockage_card.pdf); grape juice is also supposed to be good:
HOW TO TREAT ILEOSTOMY BLOCKAGE
Symptoms: Thin, clear liquid output with foul odor; cramping
abdominal pain near the stoma; decrease in amount of or
dark-colored urine, abdominal and stomal swelling.
Step One: At Home
1. Cut the opening of your pouch a little larger than normal because
the stoma may swell.
2. If there is stomal output and you are not nauseated or vomiting,
only consume liquids such as Coke, sports drinks, or tea.
3. Take a warm bath to relax the abdominal muscles.
4. Try several different body positions, such as a knee-chest
position, as it might help move the blockage forward.
5. Massage the abdomen and the area around the stoma as this might
increase the pressure behind the blockage and help it to “pop
out.” Most food blockages occur just below the stoma.
Step Two: If you are still blocked, vomiting, or have no stomal
output for several hours:
1. Call your doctor or WOC/ET Nurse and report what is
happening and what you tried at home to alleviate the
problem. Your doctor or WOC/ET Nurse will give you instructions
(ex., meet at the emergency room, come to the ofﬁ ce). If you are
told to go to the emergency room, the doctor or WOC/ET Nurse
can call in orders for your care there.
2. If you cannot reach your WOC/ET Nurse or surgeon and
there is no output from the stoma, go to the emergency
3. IMPORTANT: TAKE THIS CARD WITH YOU TO THE EMERGENCY
ROOM AND GIVE IT TO THE PHYSICIAN.
4. IMPORTANT: TAKE ALL OF YOUR POUCH SUPPLIES
(eg., pouch, wafer, tail closure, skin barrier spray, irrigation
49 years old, female. Sick for way too long with Crohn's (or possibly UC) Proctocolectomy and permanent ileostomy in Feb 2011. Perineal wound taking its time healing, but otherwise feel better than I have in years. I only take vitamins now, no drugs at all!