Hello minnietoty,
I am very sorry to hear that you're having these issues.
www.ncbi.nlm.nih.gov/pubmedhealth/PMH0000880"Mesalamine (Pentasa) comes as a delayed-release tablet and a controlled-release capsule to take by mouth and as a suppository and an enema to use in the rectum. The delayed-release tablet is usually taken three times a day, and the controlled-release capsule is usually taken four times a day. The suppository is usually used one to three times a day, and the enema is usually used once a day at bedtime. Follow the directions on your prescript
ion label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take or use mesalamine exactly as directed. Do not take or use more or less of it or take or use it more often than prescribed by your doctor.
Swallow the tablets whole; do not split, chew, or crush them. Be careful not to break the protective coating on the tablets.
If you are unable to swallow the capsules, you may mix the contents of the capsules with water.
open a capsule and sprinkle all of the beads it contains in a small glass of water. Stir the beads into the water and drink the mixture right away. Do not store mixtures of beads and water for later use."
This is something that should first be discussed with a GI. If you're not happy with your current GI, definitely find a favorably reviewed GI.
With that said, obviously you have to get your gastritis under control first.
There's variables in your situation that I just cannot answer and need to be addressed by a physician/GI. The fact that you're using enemas for proctitis and your inability to tolerate antiemetics in a pill form.
I realize the post is from yesterday and it's Sunday, it may be time for an ER visit to get your situation under control immediately.
I'm sorry, I wish I could be more helpful. I hope you get the treatment that you require and very soon!