Extract: The level of potency, 5 x normal, 10 x normal, 15 x normal, up to 20 generally.

Standardized: A more pure form of extracted salvia. Non standardized has a lot more tar and junk on it. I recommend you get standardized for health benefits.

Premium: Quality of the basic salvia is premium.

Concentrated: See extract. Unless it's in a liquid form, it could mean this too.

Extract Enhanced: same as non standardized, most likely.

Don't listen to these guys talking about taking multiple hits of 15 or 20x your first time. Take one very large hit, and hold it in as long as you can. The longer you hold it in, the more powerful it will be. Take 2 if you mess up the first inhale. MAKE SURE YOU HAVE A SITTER. Hand the sitter your bong/smoking device as soon as you are done hitting, especially if it's cherished glass. Be prepared to seriously trip balls. And don't do it with your main objective being fun. I definitely wouldn't have called the first time fun. It was insane. I thought I was a door spinning through a spiraling vortex, and that all I had ever been was a door and all I ever would be was a door. Time kept repeating. I didn't remember who I was, that I was on salvia, or that reality wasn't based on doors and spiraling vortexes. The come down was especially bizarre as I began to vaguely remember reality. It was like remembering a dream you had the night before and not being sure whether you just made it up or not, or whether it really happened. Respect is the main word here.