“I had a frind who told me that is possible awake siddhis or raise kundalini or samadhi using drugs like DMT, Lsd, Marihuana, Ayahuasca and others.”
Deicide,
It is possible to awaken siddhis through drugs. As far as Kundalini is concerned, it is not something that can be triggered through a mere drug, but specific processes of yoga. Even in practicing the methods, it is very rare that one actually manages it. So, if one manages to awaken Kundalini without even the techniques, then it is even more rare than the rare. But it is possible to awaken siddhis through drugs. Because all that these siddhis are, are certain aspects of your own unconscious. Or in terms of the brain, higher potentialities of the brain which become active. Man does not use even near half of the potential capable of both his mind and brain. And in the unconscious and beyond the unconscious, there is a vast reservoir of energy which is simply lying there dormant. Everybody has them, but it is just a matter of whether they are triggered or untriggered.
There are various ways to trigger them. One of them is through certain drugs.
But it should be remembered that when a man like Patanjali spoke of awakening siddhis through drugs, he was not speaking to the ordinary person, but for the yogi. And the chances of the yogi awakening the siddhis through drugs are far higher than that of the average person. The yogi has already gone through certain physical and mental discipline, and his inner space is now absolutely receptive for it. Neither is Patanjali recommending that you become a frequent drug user. On the contrary, in the yogic sciences before any methods which involve drugs are ever prescribed, the yogi has to demonstrate that he has already attained to a certain amount of mindfulness and balance before one ever attempts such a thing. Otherwise, one is bound to become entangled in the senses while under the influence.
As far as samadhi is concerned, only very light levels of samadhi are capable. Because the very nature of drugs is to stimulate the mind rather than bring the mind to a stillness, it cannot take you to the deeper depths of samadhi where the activity of the mind has or almost become absolutely silent.