The story of Delta 9 goes back to the start of the medicinal marijuana revolution over 15 years and put simply is an extraction from the marijuana plant. Delta 9 is considerably more potent than Delta 8. Some believe it to be about twice as strong overall. Effects are also more considerable with Delta 9. These can include paranoid delusions, mental fog, impaired motor skills, and increased feelings of anxiety. Delta 8 works slowly and gradually as it eases users into a more mellow state. Meanwhile, Delta 9’s onset is more rapid and instantaneous.