It will become... inaccurate, to say the least. It might start reading much higher, or it might just not read at all, giving you the question marks. And up to 4 hours, in my experience. I can't take ibuprofen either, and if the headache is bad enough, I normally just give in and take paracetemol. There are no long term effects on it.
It will become... inaccurate, to say the least. It might start reading much higher, or it might just not read at all, giving you the question marks. And up to 4 hours, in my experience. I can't take ibuprofen either, and if the headache is bad enough, I normally just give in and take paracetemol. There are no long term effects on it.