Alchemy Flask's --- Reusable??Follow

Im an 300 Alchemist, and looking to have it pay off, more than anything, dropping this for Enchanting. Most other profesions at 300 you can create really cool stuff and keep it using them. The only thing Ive seen so far for Alchemy at this lvl is creating Flask's. My question is how these work. They take so much work to make, are they gone once you use them???? I cant imagine going through all that work to make one just for it to be used once and gone.

Is there anything we can make at this lvl that is profit worthy?
So far in my XP, nothing is more profitable than Enchanting.

Well I didnt like the OP's attadude so I sat on my awnser.

Flasks are not reuseable, and I am sure it seems like a waste(to OP). I find them invaluable, sure not everybody on your raid will Drink down a Flask of Supreme Power, but not giving one to your MT in MC is .... pointless, sure maybe not for the first few guys, but in the end it makes healing that guy for the Rag fight go much smoother. If it takes a few stacks of herbs and a trip to Scholo(not bad with rouges and druids) so that we can go in and pull out 8 epics a week(average), I am game for the trade ofF. A few stacks of gromsblood some dreamfiol and some lotus(Black)has a value of about 20 gold (on a weekend)on my server, but ya cant buy the epic class leggings that ya get, When the dust settles the mob is dead and it comes time to loot, The gold you maid enchanting didnt help, the enchants you did for party members Had minimal inpact(bar cursader on your mt and such), but the extra 2k HP your tank had, and the MP your casters/healers had due to flasks, did make the diffrence, and as a team player being the guy that made the diffrence, i know i chose the right porfession, sure I am not Wealthy, In gold, but I got plenty O DKP to buy epic Endgame gear you cant buy with your pile of money.