I would go along with the lab work recommended including thyroid, let the vet diagnosis her.
Or find another vet, however, it is not unusual to suggest bloodwork, some vets would like it done once a year.
And what’s wrong with medication that has been prescribed by a veterinarian that has examined the dog, that’s intended to make the dog more comfortable?
The symptoms you describe could be any one of a number of things including allergies.

Regarding the food, again, I would see what the vet recommends. Adding supplements and vitamins seem unnecessary for a pup that young, plus they might upset her stomach more.
I would allow the vet to take further diagnostic tests, get the dog diagnosed, then you can go over your treatment options.
In the meantime I might presoak her kibble and start giving her the reglan as prescribed.
Also, if she hasn’t been spayed, she will be going into heat soon.

I have a girl with sensative stomach or sometimes diarrhea or loose stool too. As i have 6 dogs i was trying many different dog foods till i had some suggest about too high protien in the food. She suggested a much lower protien current was %32 past ones were simular
I changed over to Fromm duck and rabbit but lowest protien was whitefish a potato but kept with duck and rabbit w. Wow havent looked back. Way less gas no vomiting hard firm poop

Matt,

You might try one of the Natural Balance Limited Ingredient Diet formulas. I’m a pet sitter so I see how dogs do on different foods on a daily basis. Whenever dogs have issues with loose stool, I recommend they switch over to natural balance potato and duck formula. I almost always see immediate improvement after they switch over.

If you’re willing to go the dehydrated food
route, Honest Kitchen will likely do the trick as
well. Dogs on on Honest Kitchen always have solid poop from what I’ve seen

Other brands that are good for sensitive stomAchs are Orijen, Acana, and Nutro.

You can also try adding some canned pumpkin (no sugar) or cooked yams to the food to help bull up the stool.

Diet could be definitely the cause i would try that, before following the vet. Because most puppy food, is made with chicken. Which is the most common sensitivity. And you don’t have to feed puppy food because its for puppy’s, the only thing you should avoid is the ones that say adult food. So a good food to go for, is grain free, high quality meat, no mysterious meat, no colouring, no starch. Most of the time vet tests come up negative or inconclusive. Also, sometimes it is the way the food is processed in dry food that your dog can react to. In which case, try raw, it is more expensive, but it is fantastic. Vets go against it because they get a day training of nutrition provided from the big company brands at the vet. And they have to meet a quota each month as well.. Id say try raw and if you are worried that it is not nutrionally balance (because all vets will tell you different), get nupro gold, it has all the vitamins a dog needs.

Matt,

Natural Balance limited ingredient foods are lower in protein, and with the very limited ingredients they work out well for determining food issues and giving the GI tract time to settle down. If it does solve her symptoms, then after 3 or 4 months, I would try slowly adding another brand of grain free food with higher protein and more ingredients to see how she reacts. If at all possible, you do not want to be locked into just one brand of food. All of the brands, including Natural Balance, are apt to change or discontinue formulas without notice, and you need to have other foods to feed when this happens.

Also, when you start transitioning to the Natural Balance, do it very slowly over at least a two week period. Natural Balance does not add probiotics to their food and it will take longer to do food transitions with it.

Hi, my boy has a IBD, has food sensitivities, in the beginning vet said he had Colitis, Patch starts farting, sloppy poos & itchy skin, depends on what ingredient he’s sensitive too, carrots make his ears itch & he starts shaking head & scratches his ears, with chicken he gets red paws, sloppy poos, itchy skin & vomited his raw chicken, there’s a list of foods that I finally know he cant eat…
Your best to feed a Elimination Diet, start with just 1 novel protein & 1 carb feed for 6 weeks, if she is OK you have found 2 ingredients that she isn’t sensitive too, then you add another new ingredient & feed for 6 weeks….
Food sensitivities can take from 1 day to 6 weeks to show any symptoms or look at a very limited ingredient kibble or wet tin food “California Natural” has their Lamb & Brown rice has just 3 ingredients or they have a Puppy formula with 4 ingredients but its chicken choose a different protein to the one she’s eating at the moment..
or try a Vet Diet like “Royal Canin” Potato & Venison or Potato & Salmon or the Potato & Rabbit wet tin is better to feed then a kibble, then when you find she is doing best on the say the potato & Venison after 6 weeks cause the vet diet is balanced you can start adding 1 new ingredient say boiled rice 2 table spoons is she OK with the boiled rice my boy cant have boiled rice it irritates his bowel but he can have the ground rice in a kibble…
In the end the best kibble for Patch was “Taste Of The Wild” Sierra Mountain, Roast Lamb it’s grain free, the Protein-25% fat-15% & fiber-4% it has purified water as well.
Try & find a kibble with the same percentages don’t go too high with fat & protein….

There’s also “Canidae” Pure Formulas but the protein & fat is higher in some formulas so read them…
California Natural- http://www.californianaturalpet.com/products
Canidae- http://www.canidae.com/dog-food/products
Taste Of The Wild (TOTW)- http://www.tasteofthewildpetfood.com/