Is there a medicine that eradicates sexual desire from its roots for someone who is unable to marry due to poverty and illness, out of a desire not to disobey God, and what is this medicine if it exists?

Among the things that help in abstaining from indecency are voluntary fasting, filling one's time with beneficial activities, avoiding visual stimuli, and foods that incite lust, and frequently asking Allah for chastity. It is also mentioned that swallowing a dirham's weight of henna may help in this regard.