No, but have used aspirin for navicular. But aspirin and Bute both have the potential to cause ulcers and other gastric upsets. Typically short term there’s no issues but anything longer then a few weeks could be problematic. Hence the popularity of the previcox and equivalent drugs that are easier on the tummy for long term use.
You have to be careful with supplements if you give more then one, you can increase or decrease the effect of drugs or other supplements and there’s no research. Using the above example of NSAIDS, some are also blood thinners, some ingredients found in “natural” supplements for inflammation can produce the same effect, no requirement they be listed in the label either. Given together that can create issues. That’s a simplistic example but be careful.
Again, there is no cure for age, wear and tear related osteoarthritis no matter what some ads suggest. Symptom relief is what we can do. Yes, some products let them move a little better and more comfortably, but it’s because it doesn’t hurt so much. A more targeted pain relief drug gets them a lot better then a hit or miss, unregulated supplement.