
Hi Guest,
Colitis in not in itself a disease - it is a symptom or collection of symptoms that have an underlying cause - most probably food based, bacterial, or induced by stress. Ideally a vet should be identifying the cause and curing it - not treating the symptom in isolation.
Often, as Briony says, well intentioned but ill-advised swapping and switching of diets without due care being given to allow the digestive system to cope with such changes can bring on these symptoms but in your case, after 4 years, I'd be inclined to think that simply sticking to a quality food and riding out problems until they settle will not work unless thorough steps are made to ensure the ingredients of the chosen food are not in themselves causing the problem.
As for the Hills prescription range - as named, they are prescription only diets so you will pay a premium for them through your vet. They have their place at times but are far too often heralded as the only way to go.
Corn (maize), wheat, barley, oats, rye, rice, soya, beef, chicken, dairy and
any form of gluten, artificial colourings and additives - these are common intolerances with a digestive tract that has been allowed to degenerate over an extended period. Please don't, for the sake of your dog's future health, be tempted to shop around to save a few pounds on a bag of food - often the more expensive foods require much less to be fed daily and so if that is the criteria you're measuring by it will be a false economy if you feed 40-100% more daily of a cheaper brand but worse still could be detrimental to your dog's condition.
My advice would be to opt for a total diet change, absolutely
no treats, titbits, table scraps, dog chews, nothing of any kind for at least a 6 week trial (depending on no adverse reactions within that period). If you're dog is currently suffering severe symptoms, starve him for 24 hours allowing constant access to fresh water and the following day give him in total only half of the recommended food guide of the new diet - but split over the day into two, or preferably three small meals. Regardless of whether he's hungry, don't be tempted to give more. Follow same for the next day. If his bowel motions are improving, on the next day increase the amount by 50%. All being well, your dog should then make the transition onto the new diet immediately and yet with minimum upset. NB. the recommended daily intake on every dog food I've ever seen is normally much higher than any dogs ever need - better not to overfeed as too much food will make his condition worse still.
As to which diet, I can personally highly recommend Wafcol Salmon & Potato (around 50% cheaper than Hills prescription) which can be bought from Pets at Home. Both ingredients are usually not found in other foods so if your dog has developed an intolerance/allergy to any ingredients over the years, then this food should keep you clear of any of those unidentified sources. Don't opt for a range using "corn" instead of potato - most grains worsen long established symptoms.
There are many good foods on the market and many poor ones - often they have many common ingredients, regardless of price - consequently I would not in this instance recommend any of the usually proffered brands as wheat, rice, soya, gluten and the usual protein sources of chicken, beef and lamb are common to almost all in some degree.
Good luck, HTH, Teri