Have you ever done the EC stack? That's what theyre trying to mimic.
If you want something containing ephedrine, buy a box of bronkaid or primatene. Take 250mg caffeine + 25 mg ephedrine (1bronkaid or 2 primatene) 2-3 times daily. Take 1 baby aspirin with first dose only. If you want EGCG buy nutraplanet's (if they still have it in stock, think i got mine for like 7.99$/bottle). Take 1 with each EC dose. You could also add in yohimbine or rauwolscine in if you want, but try EC without it first.
Thatll be superior to the product you showed. If you dont want ephedrine, alphamine and norcodrene are both great choices.