So if one uses harmalas, how much longer does it make the trip of vaporized DMT? Where could I find info on dosage etc.?

For some, they claim the breakthrough trip has seemed longer than an hour etc.

However, for me, the 15 minutes or so of a 30mg dose is quite enough by itself. If you are in a state of shock when smoking DMT, you might want to get used to it and increase your dosage, there are no limits with DMT, however, the user has his/her limits. However, one also should review their views on what they want to get from the trip.

Also, you might want to try changa or ayahuasca, if you want to be longer "there". And don't forget the teaching shrooms