Hi hope he is doing better now having fasted for a couple of days.
The peas work well like mentioned as a laxative. Garlic also aids in regular GIT motility. You do have to be careful not to assume that the bloat has been caused by over eating of a certain food and not a bacterial infection. Certainly peas and garlic are a good place to start but if no improvement you may have to consider meds.
With regards to meds, esha2000 wont work as its for 'external' bacterial infection. In fact you will find it hard to find a anti-bacterial that will work as the meds from your lfs are just not 'strong' enough. If you can get Vibramycin which is a doxycycline that will work well, but you will have to get it from your vet.
Keep us posted!
cheers