Having spent time in the jungle of Peru and Ecuador they will probably ask you to take some kind of Malaria pills or other stuff like that. Now here what I know about that stuff and then you will be able to decide what you will do with it.
When I went there I was told to take malaria pills it was a once a week pill, some others from a different province (Canada) than mine had a once a day pills to take and we had to take them starting 2 weeks before going down there, during our stay and 2 weeks after being back home for time off.
Since we were on a 4 weeks on and 4 weeks off schedule we would have to take those pills non stop for the duration of the contract (couple of years) I did not do the 2 years though That was the infos we had from the Canadian doctors.
Now what I decided to do was to wait till I got down there and ask the local doctors what they thought about the pills I was given. Did get a bit of a surprise when the doctor saw what I had, he asked me if I was suicidal because that stuff would kill me in a matter of a couple of years. It would start by destroying my liver, then my "balance system" would gravely be affected and some other very serious side effects. He said this, pills are good for one or two kind of malaria but there are 62 kind of it and even with those, I can still catch it and if ever I do, it will be a major problem to get ride of it because of the pills already taken.
Said not to take anything, first of all there are no malaria above 3000 ft and the best thing to do is roll up your sleeve before sundown ( around 6 oclock close to Equator) for an hour or so and same thing in the morning.
I never caught anything and also there are a lot more to worry about in the jungle than the malaria, it will be the least of your problem when you start seeing what other stuff (sickness) is running around there.
JD