Venezuela has a wide array of pharmacies, clinics and hospitals. Good medical care is available in Caracas, but may be difficult to find in rural areas. Public hospitals and clinics are free, but the quality of medical care is better in private facilities. If you need hospital treatment in Venezuela, by far the best facilities are in Caracas. Smaller issues can be dealt with directly in pharmacies, as they are allowed to give injections and administer a wide range of medicines, although in recent years shortages have dogged pharmacies as well, so bring any medication you need with you.
Malaria and dengue fever are present in some tropical areas, and while other insect bites don’t necessarily cause illness they can cause major discomfort. Overall, your biggest dangers are the standard risks of travel: sunburn, food-borne illness and traffic.
Tap water is generally fine for brushing your teeth, but is not recommended for consumption.