I understand it "a little" but not much
its simple enough: if stuff goes away, then the rate at which it goes away is measured by the time it takes half of it to go away (there's an assay history behind this)
So when you read up on any drug the half life is important to understand as is the mechanism behind what "makes it go away"
With Warfarin it varies between 20 and 60 hours (both from person to person and even within a person over time)
From Wikipedia (
here)
the Metabolism bit is the genes involved in Cytochrome P450 (its a deep rabbit hole, but its
here) and that's actually really important because anything which keeps P450 distracted or busy will mean that the amount of warfarin in you builds up more (as the half life stretches to longer times).
Amiodarone is exactly one of those things and will get in the way of managing your husbands INR ... eg (
link)
Amiodarone inhibits the action of the cytochrome P450 isozyme family. This reduces the clearance of many drugs, including the following:
I've bolded warfarin ...
So this will become a bit of a mess but first things first
- get his INR in range
- then deal with the inevitable issues caused by being on Amiodarone
If you feel inclined please keep a track of his daily dose (write it down) and whenever you know it the INR (keep those details dated) something like this:
date | dose | inr |
11/03/22 | 5 | 2 |
12/03/22 | 5 | |
13/03/22 | 5 | |
14/03/22 | 5 | 2.4 |
15/03/22 | 5 | |
16/03/22 | 5 | |
17/03/22 | 5 | |
18/03/22 | 5 | |
| | |
note the dates are day/month/year (dd/mm/yy) and the inr and doses are conjecture ...
I really don't think there is much to be gained by googling like mad, this is a big topic and as Dick says "
eat the elephant one bite at a time" not "
revving the engine with the wheels spinning in the mud"
Ask here because someone here will have an answer (cos many of us have done it for years already)
Best Wishes
(*hope for an angry face from someone)