I have been using the same dosage for years. My recent refill is not working the same. I have some left from the last refill and tested it. Yes, there is a significant difference. Another thing I noticed is the taste is different. If you don't get the water quickly enough, the pill has a strong taste but not with the recent refill. Is anyone having the same issue? The pharmacy knows nothing. I'm concerned because I don't have the proper meds and I think there is something is wrong with the pills. All identifiers match the previous refill.