A few years ago I went down the rabbit hole on sublingual drug dosing and efficacy. There were only a few studies on Anadrol and Anadrol, but they showed a huge spike in the blood stream vs placebo and the duration of the splike which was between 1-2 hours. In theory you're getting all the benefits of peak levels for when you it it the most (workout/shortly after), while limiting the impact on the liver due to short exposure time and dissolving into the blood stream via under the tongue,
My bloods have been much better using this method and you get a huge bump during workouts. Just my opinion.