This may be the most rookie question I could ever ask, but what does IU mean? Like if a peptide or bioregulator is sold in 5000 IU...what is that?

Soooo, been on Glow for 8 weeks and this is my last week before I am taking a 4 week break. Problem is my face decided to completely breakout just this week which I am assuming is what they are calling the "copper uglies", Do I stick to my plan and stop for 4 weeks or do I need to continue so the purging process isnt interupted?

I have been taking NMN orally for 6 months now and I just recently started injectable NAD. Is it necessary to continue taking the NMN pills anymore?

I am wanting to add NAD to my stack but dont know if I should take it on the same days as my Mots-c which I do 3 times a week or do it on the opposite day of Mots.....Any thoughts?

Anybody do their Gluta or NAD IM? I just did my Gluta in my arm for the first time and and now the muscle is sore. Is that normal? Im new to IM and just making sure I am on the right track. I am starting NAD tomorrow morning and wondering if zi should do that IM also.....