I've been using chemx for about 2 weeks now at 10mg ed. Its helped slightly with endurance, but nothing mind blowing. I'm experiencing fatloss, but I believe has to do more with my everyday fasted cardio and calorie restrictive diet. In all honesty, its over price for what I'm experiencing so far. Maybe I will see more benefits by the end of the week. If I do, I'll be bumping it up to 15mg a day and see what happens.