Do not underestimate nature's ability to produce complex chemicals.
The peyote cactus, for example, contains over 300 different alkaloids. Do you have any idea how hard it is to synthesize mescaline alone?
That tiny plant does it at room temperature, simply drawing the precursors from the soil.
It's basically a pocket-sized, naturally-occuring drug lab that does things we can only dream of.
Given how advanced gene splicing is in SR, about every non-magical compound appears feasible to me for biogenic production.
With that in mind, look at it from a game balance perspective.
The chemical gland only has two highly situational advantages over the auto-injector :
It can resupply itself, and as bioware, it is harder to detect than standard cyberware.
This is balanced out by a much higher price, higher availability, actually having an essence cost and the fact that you can't stick an infinite number of chemical glands in your cyberfoot.
"Naturally occuring" is a pretty hazy restriction. It's not as if it was a clearly defined rules term. It leaves a lot of leeway to the individual GM for ruling it either way, but i see no problems with allowing players to produce most compounds in a chemical gland.
QUOTE (Yerameyahu @ Mar 12 2011, 02:49 PM)

Socinus, I really can't think of anything that's a legal, useful option at the moment.

Look at the legality ratings of SR drugs. There's hardly anything that's not at least semi-legal.
With the exception of some toxins, BADs and K-10, almost anything is unrestricted or R at best.
Now, R can mean a lot of things, from "prescription only" to "unscheduled due to legal loopholes".
But the impression you get from looking both at the tables and the fluff texts in Arsenal and the core book is that drug laws in SR are very, very lax.
Not that it would bother career criminals routinely packing military-grade cyberware if things where handled differently.
Even detecting the chemical gland in the first place would be beyond what average security is capable of, and determining what it does exactly would require extensive lab tests. Saying "oh, that's just my insulin gland" and waving a fake license should suffice in almost any case where it even comes up at all.
QUOTE
On a tangent: that huge problem aside, I certainly don't believe that this (or any other method) allows you to avoid an of the drawbacks of drugs, either.
I'd say it's a given that the drug works the same way as usual, including drawbacks.
If you are immune to it's negative effects, you should also be immune to the positive ones, as immunization treatments aren't said to be selective for particular properties of a drug.