would it b safe /effective to stack clen with "tight!"heres the ingredients:
Caffeine Anhydrous 200mg
Synephrine HCl 99.9% 20mg
Forslean® 95% 20 mg
Synthetic Guggulsterones Z&E 99.9% 20mg
Yohimbine HCl 99.9% 5mg
Vinpocetine 99.9% 5mg
Bioperine® 96.9% 5mg