OK I'm out of B-12 but not for long! I'll get some today. I like the liquid that I shoot under my tongue for a quick pick me up. LMAO I just remembered a rather "kinky" story surrounding B-12. When I was training to be a professional Dom I was under the tootalege of a six fott something, broad shouldered, bald & very biker looking man. He often has a flock of ladies around him when we make an appearance at our local BDSM club. About half way through one night we were standing around being social when I noticed him retreave a bottle of what I knew to be B-12 from his bag. I stuck my tongue out at him for a squirt. When I got mine, I saw several other ladies do the same. Later we were told that someone had mentioned to the "Dungeon Master" that it appeared we were openly doing drugs on the dungeon floor, which is a huge no no. There are no drugs or alcohol allowed at most legit BDSM clubs. I still giggle will I think of that story. We were simply getting more energy so we could....... ya know..... longer! LMAO

"Does it make a difference if it's B-Complex, B-6, or B12?"

My personal standard is: you want something that contains a recommended daily value of B-12 that's at least four digits long (I meself take a B-12 pill that by itself has some-number-in-the-thousands % to it, and then add a regular multivitamin on top [whenever I'm not too fibrofogged to remember it, of course, of course] -- that 5-Hour Energy Drink stuff has similar dosages, IIRC...)