Going by your post I don't think you're ready for either. T3 is not a support, it is a thyroid hormone and will suppress your natural thyroid production. Clen is no joke and if used improperly can have some serious side effects, and it's not a PH it's a very potent beta 2 agonist. I have used clen with great results but I won't touch t3 because I'm not comfortable messing with my thyroid. It's your first cycle so just stick with the PH first and don't mess around with clen or t3 until you have done a lot more research, neither are something to dive into without having a full understanding of what they do and how to use them. Also you're not supposed to source post aside from Purity since they are a sponsor.