Nov 16, 2009 - 11:15 am
I just started the maintenance dose of interferon. 18 mu, 3x/week. Here's my issue: my local cancer center pre-fills my syringes for me "under the hood". This kinda worried me, since supposedly, we can fill our own syringes using the drug supplied to us in vials from the manufacturer. So I was a little concerned/suspicious. So, having read the patient insert about interferon, I asked them which form of interferon they were using - the powdered form that needed reconstitution, or the liquid for injection? There is a difference, because the powdered form doesn't contain preservatives and must be used within 24 hours of reconstitution.
The pharmacist stated they were using the powdered, but that she reconstituted it with sterile water that contained a preservative. (IOW, they didn't use the dilutant that came with the interferon, but substituted their own.) Huh? They did WHAT?
Now, the pharmacist draws up 1 months worth of syringes at a time. How does she know the interferon is still effective at 4 weeks? Has she done studies? This "option" isn't mentioned in the interferon literature. I realize pharmacists go to school and get a degree, but are they allowed to do things such as this?
I'm very concerned, since this is my life we're talking about. Can anyone provide any insight?