What's "iffy" about it? It's safe and effective. The real issue is whether you can afford it!
4iu/day which is a good starting dose will cost you $225/month with UG labs. Look at spending $4k/year for a steady dose thru a doctor (if your insurance does not cover it)
It is meant for long term use and needs to be used at least 3 months at a time for any real results.