TweetWell we convert HGH into IGF so taking HGH would be better than taking IGF alone but it is much more expensive than IGF. I have used both together and one at a time and I would say if you want to use IGF then HGH should be taken with it because there is a negative feedback loop that will cause the IGF intake to slow your natty HGH release. If you can only use one then HGH would be my choice. I hope this helps you decide brother.