[theBCnut]

I have never heard that tart cherry can be overdosed, so I wouldn’t worry about too much. However, I would just give a whole one every other day for the bigger 2 and every third day for the smaller one(or maybe every other day for her too, since 40 lbs is only a little less than 50 lbs). I would strive to give Lucy 1/3-1/2 a dose not 1/4. I give a 25 lb or less dog a quarter dose.