Not always the poison acts on the body instantly, also as an antidote taken in a certain time. The effect of antidote can occur at any time. The most effective action of antidote at the moment, until the poison enters to blood and spreads it across the tissues of the body. The destruction of poison, as a chemical substances, occurs with destruction of molecules or "binding" of toxic substances.
For example, when the adsorption, the poisonous substance is blocked and converted to imperceptible form for the our body. This so-called substance - adsorbents that do with the toxic substance directly and react with them.
There are also antidotes, which can not be called antidote, because they do not interact directly with poisons. Here, for example, from poison of mushroom, there is the antidote to atropine (or other way, is called alkaloid, that is contained in plants, such as henbane, belladonna). Poison of mushroom (muscarine) do on the receptors of the body and irritat them, but the atropine, vice versa, - calms them, thus the poison and the antidote are in equilibrium and will not do for us.
In our body the main organ that first get an impact from toxins is the liver. The liver has its own recovery reserves, which helps the body to neutralize poisons. But if the poisons come in the body often and considerable quantities, the recovery reserves of the liver runs out and it stops working. If the liver works well, the probability of poisoning is decreased. There are antidotes that restore the body's reserves and help him faster to neutralize the poison. As an example would be licorice root, which helps restore the functional efficiency of the liver with replenishing of gluconic acid.
Currently, for almost all poisons are known their antidotes. In medicine studies are done, for not definition antidotes for certain poisons, but for research on, how to make these antidotes even better !
Toxins - also can be attributed to next type of poisons, but there is a significant difference between poisons and toxins. When released the toxins in the body - the antigenic properties are produced and these help to produce immunity against harmful substances.
With a chemical point, toxins are complex chemical substances that have a protein origin. Toxins are very harmful and highly-active substances for all organisms. Toxins occupy a niche between the standard poisons and viruses (virus - protein molecules which is able to samarangense). Toxins usually represent a waste products of other organisms (mostly microorganisms) - plants or animals. But not all substances - waste products of microorganisms can be considered toxins, because they may not have protein origins, but traditionally they are referred to the toxins. One of the most poisonous for our body (and not only for us) toxins is Botulinum toxin.