Not familiar with the brand.
2iu of PHARMA HGH will help with skin, sleep, feelings of well being, hunger, sex drive, skin, nails etc
4iu of PHARMA HGH will help with body composition, namely help burn fat faster and keep you lean, during a cut OR a bulk. Will start to have good synergy with test at this dose, and for bodybuilders this should be the minimum dose for it to be “worth it”. Note that you will not really be building muscle with HGH at this dosage, just staying leaner!
6iu of PHARMA HGH will help you with body composition, both in staying lean AND increasing lean tissue that you can build. Growth hormone at 6 iu/day and above will have a dramatic effect on muscle growth and fat loss, assuming you are combining this dosage with testosterone, if not other compounds as well. HGH at this dosage or higher can really take your physique to the “next level”.
AS for your question about the “gut”, it is speculation. NOBODY KNOWS for sure what causes that gut. Some say insulin, some say SUPER HIGH DOSE (20 iu+) hgh a day AND slin causes this. Shadow pro has some good insight into his belief as to what causes this. I think he believes it has something to do with HIGH DOSE SLIN + HIGH DOSE HGH + extremely high food intake.
I have no experience with the “gut” so I am just parroting information I have read here. I do have some experience with HGH and my experiences match what I have read, which is very similar to what I posted for you.