Ionic compounds. Ionic bonds form when a metal reacts with a non-metal. Metals form positive ions; non-metals form negative ions. Ionic bonds are the electrostatic [electrostatic: An electrostatic force is generated by differences in electric charge (ie positive and negative) between two particles.
Red raspberry leaf tea is also used for painful menstrual cramps, as well as heavy periods. The chemicals in the red raspberry leaf help relax blood vessels and cause muscles to relax or contract.
Raspberry leaf is thought to tone the muscles of your womb (uterus) so they work more efficiently. The idea is not so much to kickstart or speed up your labour, but to help it to progress at a nice, steady pace. That's why it's safest to start taking raspberry leaf tea in moderate doses weeks before you go into labour.