https://www.thevespiary.org/rhodium/Rhodium/chemistry/ephedra.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/ephedra.html)
Approximately 425 grams of ground ephedra plant material was washed three times with methanol. The methanol washings were collected and allowed to evaporate to produce a greenish-brown tar-like substance. To this material was added 250 mL of a 57% solution of hydriodic acid and 9.5 grams of red phosphorus in a 1000 mL round-bottom flask.
...The reduction of ephedra with hydriodic acid and red phosphorus results in the production of d-methamphetamine, d-amphetamine, and d-N,N-dimethylamphetamine[8,13-15].
Is a 3xmethanol wash is all thats needed? Granted you wind up with a few extras in there but the presence of d-amph isn't of great concern and the article details that DMA traces are tiny.
http://www.spiritplants.com/articles/DMT.htm (http://www.spiritplants.com/articles/DMT.htm)
" for extract the ephedrine alkaloid ?