First, visit any trainer in the main cities of old Azeroth - just ask a guard, and learn Apprentice Alchemy.
You'll need these in the next step of the Alchemy guide.
Learn Alchemy Journeyman.
Learn Alchemy Expert.
Make [Fire Oil] if there is no [Stranglekelp] in the Auction House or if [Firefin Snapper] is cheap.
If you made [Fire Oil], you can use it to make [Elixir of Minor Accuracy]
or
25 x [Elixir of Fortitude] - 25 Wild Steelbloom, 25 Goldthorn, 25 Leaded Vial
Learn Alchemy Artisan.
1 x [Philosopher's Stone] - 4 Iron Bar, 1 Black Vitriol, 4 Purple Lotus, 4 Firebloom
You will need this for transmutes, so keep it.
[Elixir of the Sages] is a great alternative if you don't have that many Blindweed or Sungrass. You have to make a few more [Elixir of Greater Agility] up to 270 before you can learn this recipe.
Go to Outland and learn Alchemy Master.
or
10 x [Adept's Elixir] - 10 Dreamfoil, 10 Felweed, 10 Imbued Vial
Once you reach an Alchemy skill of 325 and level 68, you may begin a quest to learn one of three specializations: Potions, Elixirs or Transmutations. Being specialized gives you a chance to create an extra 1 to 4 (for a total 5) items while crafting in the field you have selected. For example, a Master of Potions may be able to craft more than one [Super Mana Potion] for the same material cost as one.
Both Elixir and Potion master requires instance runs for the quest items and it can be hard to find groups to those old instances, so here is a little trick which can save you a lot of time.
Choose the path of Transmute Master. Buy 4 [Primal Might] or farm the required materials for 4 [Primal Might]. Go to Netherstorm, talk to Transmute Master and become a Transmute Master. Unlearn your specialization by talking to the master again, then go to the Elixir Master or to the Potion Master depends on which path you want to choose, of course if you want to be a Transmute master, you can skip this part. It costs 150 gold each time you unlearn your specialization.
Go to Northrend and learn Alchemy Grand Master.
When you reach 400, you can make a [Northrend Alchemy Research] and your Alchemy Trinket, so you will need to craft fewer potions.
If you discovered the [Potion of Speed] recipe, make that one until 415 instead of the recipes below, because it's cheaper.
12 x [Elixir of Mighty Agility] - 24 Goldcover, 24 Adder's Tongue, 12 Imbued Vial
This recipe turns green at 422, so you might need to make more than 20.
20 x [Runic Mana Potion] - 20 Goldcover, 40 Lichbloom, 20 Imbued Vial
7 x [Transmute: Titanium] - 56 Saronite Bar
5 x [Transmute: Earthsiege Diamond] - 5 Dark Jade, 5 Huge Citrine, 5 Eternal Fire
I hope you liked this WoW Alchemy leveling guide, GZ to 450!