Strength to be precise. I've done dbol and var and the SD kick was VERY noticable 4 days in. Dry gains in the 10lb territory after 4 weeks on Test/EQ/SD. I stopped SD at 2 weeks and drew blood. Liver values were slightly elevated but in normal range. LDL jumped 20 points. I will say I am thinking of doing just 10mg per day because of injectable and I'm older. SD hit me like no other compound I have taken in the last 20 years. I don't take it lightly and know its toxicity hence I don't run it often. This will be my 2nd time.