lipodrene not doing much.. can i take 2?

[BLAZE K]

Serving Size: 1 Tablet
Proprietary Blend: 660mg
Consisting of:
Sida Cordifolia Extract (leaves)(supplying 25 mg. Ephedrine Group Alkaloids)
Citrus Aurantium 10% (fruit)
U.S.P. Caffeine 100mg
5-Hydroxytrptophan
5-Methoxytryptamine
Green Tea Extract (leaves)
Cassia Nomame (whole plant)
Hoodia 12:1 Extract (Cactus)
Yohimbe 8% Extact (bark)
Naringen (fruit).

i take one in the morning when i wake up at 6 before cardio and one before my work out around 3-4 but ive been using things like lipo6 and lean system 7 without the ephedrene before i got lipodrene with eph. but it feels like its not doing much... would taking 2 tabs 2X a day be okay?

[Bryan2]

How long have you been taking it?

[BLAZE K]

i started taking lipodrene with eph on monday and ive been taking the other non-eph fat burners on and off for more then a year