Question

It used to damage them outside of battle in 4th Generation but then it didn't in 5th.

I thought it was a cool little effect that was more realistic and taught people to keep an antidote with them, so why remove it?

Answer 1

Gen IV
A poisoned Pokémon no longer receives damage outside of battle, and a poisoned Pokémon now glows purple in battle. The poison status will cause a Pokémon to take double damage from Hex and Venoshock. Switching a Pokémon out no longer changes the status to normal poison. Bad poison has dark purple characters instead of white.

Yes I think the same as you it is more realistic with hurt outside of battle poison, But this is just how gamefreak wanted it.

Comments

That sucks, I hope they change it back in Generation 6. I don't see any reason game freak would want to change it.

Answer 2

• The Pokemon are most likely not doing a lot of moving, significantly decreasing the amount od poison damage taken, perhaps not enough to note.

• There may be some contraption inside of the PokeBalls that prevent a Pokemon from being hurt whilst inside its PokeBall.

• Perhaps Game Freak was getting complaints that that feature should be taken off. I don't know about you but I hated that, as it accounted for more of my blackouts than anyhting else.

• Perhaps Game Freak wanted to mix it up.

Comments

Could be true, but why didn't you bring antidotes? :)

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Because I didn't want to waste money that I would need later on. Deal wiff it :P

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You sound like this guy at my school who spent about 2 hours running after mespirit instead of using mean look.

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Lol my first, second and third blackouts were due to poison. And I lost a Nuzlocke challenge cuz of it xP
The reason I had no antidotes btw, I WAS BROKE :'(
Im glad it sgone for one ;)