response to clen varies, for some people its great (good fat loss and low to moderate sides- some people like the sides) for others its mostly just sides (jitters, cramping, dehydration,etc)
its a compound worth trying, but usually the first time is the best. So if you did not see much from it the first time, probably not worth using again (though you could be the exception)
if you take clen
reccomend
Potassium 800-1200mg
magnesium-600-800mg
Taurine 3-5 grams
ALCAR-2-4 grams
you may also need a stim like Cardio breeze or caffeine- as it can cause lethargy (with intermittant jitteryness)