It's a simple matter to extract LSA from HBWR thereby avoiding nearly all the toxins.
SWIM extracted LSA from HBWR in a Soxhlet with boiling acetone. It works very well. Then he evaporated the acetone, dissolved the goo in a weak solution of citric acid (pH 4), defatted with DCM 10 times, then brought the pH to 8.5 with sodium carbonate, then extracted with DCM 10 times. He distilled off most of the DCM, and then evaporated the rest leaving a slightly sticky residue that can be cleaned by performing another A/B on it if you like, but it’s not really needed. You can just add some acetone, let it evaporate to remove any remaining traces of DCM.
After extraction SWIM dissolves it in DMSO for use as a sublingual tincture. Make sure to record how many seeds were used so that you can judge the potency of the final solution better. For 1 seed, SWIM would use 0.25 ml of DMSO. Another option is to use glycerin instead of DMSO. A solution of 50:50 glycerin and water acts as a preservative. It’s advisable to add excess vitamin C to the tincture and store it in a dark amber glass vial.