15mg mobic 1x daily and topical voltaren 4x daily arent quite working that well, would you expect 75mg oral diclofenac sodium twice a day to be alot better? would it be more dangerous to use? never drink. drink water. no soda, some coffee?

I would not expect it to be better. In a study by Valat, Meloxicam and diclofenac were equivalent in relieving the acute pain associated with osteoarthritis of the lumbar spine. However, meloxicam was much better tolerated. Meloxicam has more COX2 properties making it safer. These two drugs are like comparing a fugi apple to a honeycrisp apple. They are slightly different but still apples.