No I don't believe that. If you have some really high grade you will get stone. I just ate a 1/4 Gram of some white widow, and you just have to wait, for the stone. Mine didn't come on until 4 hours after I injested it. Man what a stone, it was much better than smoking it. 4 1/2 hours of head and body stone and then off to bed at 6:30 and up at 2 the next morning. I don't believe I will ever smoke again. I even forget about my broke arm, until about mid morning sometime way after daylight.