I've ran it twice now, first run was 4.5 weeks tapered from 50 week 1, 75mg week 2 and 3, 100mg weeks 4-end. Put on 30 pounds in that time, kept over 20 (high dose test and tren with it and kept eating like a monster)
Second run was 100mg for 2.5 weeks and 150mg for 1.5 weeks, put on 20 pounds kept 15 (same stack with it)
It's an amazing compound... My favourite by far in terms of immediate gratification (size and strength increase daily)
Side effects for me were: SAVAGE BACK PUMPS!!!, mild headaches, mild stomach pain (very rarely), and my back and shoulders broke out a bit with acne.
Don't run it unless your ready to embrace the bloat and water that comes with it. That being said, if you are, I would start with 50mg and increase by 25mg each week if necessary. You may not need to it is strong as fuck, but I'm not one to stay on the low dose side haha. 4-5 weeks is fine just get some good liver support... I used milk thistle only both times which is probably why I got the acne since I should've used stronger liver protection, but nothing else went wrong
P.S. Drink a FUCK ton of water

if you are not very very well hydrated you will feel like shit