Aspirin can be given to dogs and I often recommend it if arthritis isn't so advanced that the patient requires stronger nsaid medication such as Deramaxx, Previcoxx, Meloxicam or Rimadyl. I tend to dose a little more conservatively in these larger dogs since I don't want to cause gi upset.
If Chance were my patient, I'd suggest 2-2.5 full strength, 325 mg tablets twice a day with food to avoid stomach upset.
My only hesitation about its use would be that it might interfere with what your vet would want to prescribe (if he has to be seen) but several days should be fine if his appointment is a week away. The reason being that when transitioning from one nsaid to another, there needs to be a wash-out period (which you may already know) of about 3-5 days, depending on the drugs used.
As for supplements, unfortunately, they can take time (several weeks in most cases) to be effective although they aren't effective in all dogs (or humans for that matter). But, the vast majority of my patients appear to be helped by them. So, while they won't necessarily help Chance now, they may in the future.
1. I’m a huge fan of joint supplements such as Dasaquin or Cosequin which are veterinary products specifically formulated for dogs. Quality control is a big problem with these products since what’s on the label is not necessarily what’s in the bottle which is why I mentioned specific brands. These are available on the internet or your vet may carry them.
2. Also, fish oil supplements can be helpful since they have anti-inflammatory properties. Welactin and 3V Derm Caps are good veterinary products and are also available on the internet. Once started, these supplements should be continued for them to be effective; you wouldn't stop and start them, in other words, like you would drugs...but you may already know this.
3. Another option would be Zeel which is a human combination homeopathic that can be used in conjunction with other NSAID medications and has a very low incidence of adverse effects Dose would be one tablet two to three times a day....I'd go with three times a day for the first 2 weeks, then drop back to twice a day for maintenance.
4. Adequan injections can be quite effective but would have to be given by your vet.
5. Combinations of antioxidants such as Cell Advance 880 or Golden Years
6. The Indian spice, Tumeric, at a dose of 1000mg/day
I hope this helps. Deb