Excessive Sedation and Yawning. Despite if I smoke, vaporize or try to eat 4-AcO-DMT, based on dosage level I undergo Serious yawning and experience really sedated and sleepy. By far the most I’ve at any time taken simultaneously time was 280mg of 4-AcO-DMT And that i yawned really hard for around an hour or so. Sorry for your excursion report