All of this is false. Jealousy is more than this. It's not entirely negative. The snake is the medical profession's animal goddess of choice. Most poisons have substantial healing potential.
Medical properties are dosage-dependent.
Jealousy can be a great sexual energizer. It's better than Viagra. It's a doorway for true love, for desire that is entirely focused on a single person. Sigmund Freud once mentioned that for a woman to be truly loved there has to be at least some doubt as to her chastity. There should even be doubt as to her faithfulness.