You don't start at 4ius either. Start at 1iu and slowly work your way up to 3ius. HGH has side effects bro you don't just pick a dose. It's picks you. HGH is not a steroid you don't cycle it its something you incorporate into your lifestyle.
Short term benefits are increased IGF so you'll immediately notice improvement in your workouts. Deeper sleep, improved recovery, smoother skin, less acne, increased libido. Long term benefits (6 months - 1 year) are NEW CELL MUSCLE GROWTH, fat loss, and healing.