Maybe there'll be a time when Conan is unable to return his 17-yr-old body with the antidote prototype, because just like what Ai hv warned, his body develops a full resistance to the drug.
Since Ai have warned him[Conan] about the resistance couple times, I think it's quite possible that one day it's really going to happen.
And the antidote's effect wear off shorter than usual lately. First time Conan tries the antidote (vol. 26 Desperate Revival) it lasts for 24 hour. The second is at vol. 62-63 (The Return), the antidote still lasts for 24 hour but when Conan takes it for the second time it wears off in 4 hours.
The latest is at "The Holmes' Apprentice". When Shinichi meets Ran, it is said that it's already dinner time, but Shinichi already returns to Conan before evening in the next day. So it's not a full 24 hours, right? Anyway, normally a Tokyo-London flight's approximate time won't take longer than 17 hours.
So that means, the antidote effect wears off faster! Conan, you should be careful!^^
But I think in the end another important ingredient--the effect is as strong as paikaru--will shown and will make the antidote prototype even stronger. Good news!
Thankyou
I heart DC a lot.
[PS. So sorry for the bad grammar. Give any rave or rants anytime you like!
Fixed your original post with your edit, deleted your double thread - Abs.

