changed supply of Warfarin - no net change to INR

[pellicle]

Hi

when I came to Finland I brought my warfarin with me (just because I wanted to give myself time to see where and how I could source it here). This marks a week into the new supply. The 'brand' I use is Marevan and that is actually the only brand available here.

The tablets look "different" but follow the same conformation of colour code and dosage values. The bottle looks a little different too. All in all I expect they were manufactured in totally different places (one set being bought 14,000Km away from the other).

I took extra INR readings (separated by 2 or 3 days each .. just because) and between starting and now; the result is indistinguishable from my normal 'variance'.
INR
2.7
2.5
2.8 <- changed on this reading
2.4
2.5

seems to be 'steady as she goes' to me.

I report this for anyone else who travels and wonders what effect supply variations may have on their dose regime. In my case nothing observable...

 

[Protimenow]

Those of us who take generics may also be changing manufacturers without giving it much thought. Your pharmacy may use (or switch) sources without informing you. Perhaps a person changes pharmacies, and the new pharmacy has a different supplier.

What SHOULD matter is that the manufacturers conform to the color coding / strength standard. I can't imagine that many pharmaceutical companies would have any appetite for the consequences of mislabeling their products.