Plenty of people have been caught, jailed and fined for steroids possession and trafficking. The most famous case being Balco. Plenty of doctors have also been reprimanded, some even losing their medical license for inappropriate and unethical prescriptions. But like any other illegal substance, enforcement has never completely stopped people from being able to get it and use it (and likely never will).

Jason Grimsly got caught and sang like a canary to Mitchell, hence Clemens and Pettitie got caught.

The rest are getting them from doctors and underground trainers. its hard to track everyone down.

Many of the HGH supplements are sold as HGH precursors or HGH stimulators. If consider most of those products to be either outright scams with virtually worthless ingredients or else close to scams with limited actual benefits. Virtually all of the reported benefits and studies referred to in the adverstising for such products comes from actual injected HGH and not from supplementation. There have also been some concerns raised over long term use of actual HGH and studies on safey for HGH have been almost non-existant. In addition to oral supplementation, some companies market hugely expensive sythethic HGH injections, whose effectiveness is questionable and whose safety is even more questionable due to it being an unnatural synthetic. The safety of any supplemental so-called HGH products would depend on an assessment of what ingredients it contained and whether or not you could trust the company to be honest and practice good quality manufacturing.

From what I have found when I have researched them, none are able to stimulate HGH production anywhere close to what you will get from regular exercise. In some instances, perhaps the product is actually safe and you might get a bit more benefit from using it in combination with exercise, but exercise will be where most of the benefit comes from.

All the best!