How long does it take for a snake venom to kill humans?

Snakes can control how much venom they inject with a single bite and generally use far more than the lethal dose. The black mamba, for ... in a single attack. This mamba has the fastest-acting venom of any snake, but humans are much larger than its usual prey so it still takes 20 minutes for you to die. read more

It depends on the species mainly. A bite from Black Mamba can kill an adult in under an hour. However, death usually occurs from 2 - 8 hours without medical care Death from a bite from a Saw Scaled Viper can take days. read more

Snake venom affects the human body in a number of ways, depending on the snake, the type of venom, and how much venom is released. Different snakes produce different types of venom, and even within a snake species, the components of venom appear to vary, depending on geographic location. read more

Their venom is potentially lethal, and though antivenin exists, it is not widely available in the black mamba’s native habitat of southern and eastern Africa. For this reason, they are considered a top killer in a land where nearly 20,000 people die from snake bites every year, according to PBS’s Nature. read more