Oh Boy. I did mention I was due for a refill and it looks like the same thing has happened to me Dick. .
Freddie, perhaps Taro has shifted manufacturing process or production facility and their drug, , while still within tolerance, will require readjustment. I am too old to like changes so I have switched bact to Barr Lab in mid July. My last two INRs. 7/25 and 8/8, went back to 3.4 and 3.5.....in my comfort range, and I have been able to reduce my dosage back to 35mg/wk from 40/wk on Taro. I think it is worth noting that once you establish a brand/dosage that usually keeps you in range, it probably is best to stay with that brand to eliminate an unessassary variable.