OK, let's look at this from a scientific perspective. I have quite a bit of experience making aqueous acrylate based polymer systems, and this whole concept is based on someone putting together different pieces of information available on the web with no understanding of what that information actually means.
Yes it is true that nano-particle suspensions of poly(i-butylcyanoacrylate) coated with polysorbate-80 and loperamide have been shown by some studies to pass the BBB.
That is about the beginning and the end of any validity of what is proposed.
Here is why the rest is pure bullshit.
1) Making a suspension of nano-particles of cyanoacrylates is not a trivial process. There are two basic techniques, destructive and constructive routes.
The destructive route: You can mill larger particles of polyalkylcyanoacrylate to reduce the particle size.
The constructive route: You can make a nano-suspension of polyalkylcyanoacrylate by interfacial polymerization of the monomer as a water-in-oil microemulsion.
Both techniques require equipment and skills *way* outside of the scope of what the layman is capable of.
2) Having successfully prepared a nanosuspension ( which you will not) there is additional considerable art and technology required to coat the particles with the drug and surfactant and still maintain a stable suspension. Not that you could do step 1, but even if you did, you can pretty much forget accomplishing this part especially in light of all the additional binders etc you would find in what would be your likely drug source, i.e the starches and other formulation stuff in a typical pill.
3) The whole insulin deal just indicates how bogus this is. Preparations containing insulin have been widely described, but not because it has dick to do with making a basic nanosuspension, but rather because there has been a lot of research in this new technology where the target drug of interest was - yes you guessed it - insulin.
The addition of insulin - unlike how it is described here - in fact has absolutely nothing to do with the preparation of the *delivery system* itself. Rather it is the payload of interest in many studies.
The notion that a layman can do this with some superglue, Tween-80, water, immodium pills, and a diabetic friend is just that - a notion.
To summarize, what is described is a bunch of horseshit.