Health in Venezuela
The fulfillment of a private travel insurance is strongly recommended
By using a private clinic you have to pay in advance, it is recommended to use a credit card. Attendance at a private clinic in case of illness is always the right solution. In remote places, possibly, you have to be satisfied with the hospital.
Pharmacies are usually open until late at night, and there is a known emergency service from Germany.
You can obtain many common medicines without a prescription. Vaccination against yellow fever and tetanus are recommended, but not required. And malaria is not to be feared, unless one pushes the boundaries of deepest gold mining areas.
As in all "southern" countries you should be careful with the consumption of ice cream, fruit juices, salads, and unpeeled fruits to avoid diarrhea.