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New Member

Date Joined Mar 2010
Total Posts : 8
   Posted 3/25/2010 3:45 AM (GMT -7)   
does anyone know how long the humira pen stays active in your stystem. this could be a stupid question lol i was just wondering i take one shot everyother week and was curious if it is in my system the whole time in between doses or is it just like a one dose thing then its gone till the next shot.

Jonny Five
Regular Member

Date Joined Sep 2009
Total Posts : 107
   Posted 3/25/2010 8:16 AM (GMT -7)   
I have often wondered this as well. Probably something that your pharmacist, the nurses at the Humira hotline, or your doctor could answer. I looked it up on Wikipedia (not the best source, but I wasn't willing to delve too deeply into this) and the indication there is that the biological half-life is 10 to 20 days. My limited understanding of biology would seem to imply that this means after 10 to 20 days, the Humira is half as affective in your body as it was when you first injected. Hope that answers some of your curiosity. It helped mine. :)
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