I've been on HGH for a couple of years. I'm about your age at 50. I do 5iu/ed all in one shot in the am. If you're going to do 6iu I'd split it up. I don't know if going from 4iu/ed to 6iu/ed for 30 days is going to do much. If I were you, I'd stick to 4iu and just take it ED until it runs out.