I am having a problem with one of my dogs. She has suffered these bouts of upset stomach her whole life but recently the bouts have been coming closer together and they seem more severe.

It always starts at 5am with her asking out where she will do an excessive amount of 'normal poo' shortly after her stomach will start rumbling and she will start pacing and ask out to eat grass. This is the shortly followed by liquid diarrhea. She is occasionally sick and almost always fine by lunchtime. There is often blood in the diarrhea.

The vets have treated her for giardia which initially resolved the problem but not been successful this time round. If I take her in they will give her a couple of injections and she has just finished a course of antibiotics.

Any ideas on how to settle her stomach? It is becoming difficult to manage as she cannot be left alone until lunchtime as she requires out constantly. She is normally fed on csj.

It sounds like colitis considering the blood. I'm dealing with that in one dog, my daughter in one and a friend in one. I would stop feeding CSJ altogether and switch to raw meat only if possible, otherwise Butchers Tripe Mix has shown good results (especially for my friend's dog who would have a lot of blood in the diarrhoea) or Chappie.

One of my Malinois always had diarrhoea as a pup, it was dreadful, and he was on CSJ. At 6 months we switched him to raw meat only and he's been 100 % ever since -he's 6 now. Some dogs just seem to be extra sensitive.

Firstly I would get her on probiotics.  Antibiotics don't just kill the bad stuff!  And with a dog already suffering with colitis, ABs can be absolutely disastrous.  I spent a year fighting it after a course with Saffi, and when I finally took some poo in to be tested as the vets weren't giving me any answers, it was simply a case of not enough good bacteria in there.  Course of pro-kolin and she's never looked back.

Secondly I would look at food.  Now not quite the same symptoms, but my first dog suffered terribly with stomach and gut upsets for his first three years - I lost count of how many nights I spent up with him as he vomited endlessly and had diarrhoea all over the place.  In the end, I put him on raw only for 3 months to see if it would just give his system a break - it certainly did, and it sort of 'reset' him.  He was never ill like that again, no matter what I fed him (or whatever horrific decomposing things he found to eat on walks!).

For some years both of ours suffered from colitis, constantly back & forth to the vets, countless nights sleeping down stairs on the floor to let them out every couple of hours, or 45 minutes when things got really bad. Always kicked off just after vets closed, weekends, Bank Holidays, pouring with rain or sub zero, the youngest & worst, would stand shaking in the utility room waiting for me to wipe the blood from his white coat, pitiful. 
Tried everything, then after years of indecision changed to raw, they haven't looked back, very occasionally one has a bout but it never develops as it did, even after eating evil smelling, rotting bits in the fields. Could kick myself for all that time I dithered, knowing I should try raw but never taking the plunge. It really did change their lives, whole heartedly agree with Nikita.

One of my Malinois always had diarrhoea as a pup, it was dreadful, and he was on CSJ.

Unfortunately dogs either love this or hate it. My dogs all developed terrible diarrhoea with this food. I changed them to AG Lamb and now they all have perfect poos

I've got her on pro-kolin and chappie and she has been a bit better. The only possible thing I'm doing with her than could be linked to these episodes are cleaning her teeth with dentisept. Could a tiny amount of it upset her stomach this badly? Her teeth are a nightmare to keep clean!!

I would ask your vets to send off a stool sample so you can identify exactly what is causing the runny poos and then get targeting antibiotics to fix it, rather than just letting them guess what it is.  Sometimes they get lucky when they guess, but often they don't - so if what they first do doesn't work, then go for a stool sample.

These days the most probable/common cause of upset tummies is our very "convenient" kibbled diets, and unfortunately a great number of our vets are conditioned themselves into believing that these products are best.
Wheat and grain as a base diet for 52 weeks of the year is not a natural diet for our canine friends, although there are many who can survive perfectly ok on it.

Changing from one type of kibble to another, trying different types of treatments and expensive vets bills, chemicals/drugs may never solve the problem! 

Try adding some raw meat, or even better change to a raw diet. It is becoming a recognised remedy and solves so many digestive/allergy problems.
Green tripe is very nutritious and full of natural good bacteria. (take care, it smells really bad! )

Concern about bad teeth, again raw meaty bones will help considerably.

For more help Google "Raw feeding Vets"