I'm going to have to respectfully disagree.
The vehicle in which a drug is dissolved has alot to do with the absorption of that drug across biological membranes and into the circulation. When a drug is administered intramuscularly, it goes through the stepwise process of absorption, distribution throughout body, metabolism, and excretion (as metabolites or unchanged drug). The kinetics of absorption are influenced by the equilibrium between the drug in its vehicle and that which traverses a biological membrane to be distributed. The solubility of the drug in its particular vehicle affects that rate and can therefore influence the entite kinetic process of drug input/output and therefore pharmacological effect.
With oral ingestion, there is the additional step of the drug being "liberated" from the dosage form or vehicle in the stomach, then going to the hepatic portal vein to be processed by the liver, and then reaching the general circulation. I have no proof but I speculate that alot of winsrtol would remain dissolved in the oil in the stomach, only to pass through and get crapped out without being absorbed into the hepatic portal vein and having a chance to get into the circulation.
I could be wrong, but please, for my sanity, just inject the fukkin winny :>) !!