Altitude Fatigue and Sickness... any spells that fend off / work against this?

[Veldan Rath]

My players are struggling with the last bit of RotRL and the issues of the altitude (except for the guy with a Necklace of Adaption).

Elixir of the Peaks is great, but a bit pricey and only last 8 hours.

Are there any spells that can counter this effect? I don't want to drag this out too much. I do like the realism that reminds them they are in dangerous place just due to the altitude, but I would have thought that they could use some spell resources to cover this.

[EWHM]

There's an item if I recall called 'bottle of air', which is essentially exactly what it sounds like. That'd probably help.

[StabbittyDoom]

Life Bubble should work. 2 hours/level, but divided amongst recipients, so you'll probably need 2-3 castings. It's a 5th level spell (4th for druid, 3rd for ranger), so I hope you're reasonably high level (11th or so to avoid feeling bad about the use of those slots). At least it protects you from stuff like stinking cloud and cloudkill as well. Hopefully you have an Extend rod or something to make up for duration issues (since you need it to be 24hours+ I assume).

Nothing immediately comes to mind outside of that.

[Lincoln Hills]

Ironically, planar adaptation contains a clause that specifically disqualifies it from helping here. Strange and sad.