Well, I tell you , when I travel and I am doing a cycle I mix all my goodies in one vial and draw out of one, it works just fine, much more convenient to use one than to juggle 3 , especially in a hotel room. Last time I did that , I was doing Cyp, Mast E and Tren E and I mixed it all in one vial and it woked out great. I'm planning on doing the same in April , going on a road trip and I will be in middle of cycle. Nothing wrong with doing that. Just be sure to be sanitary about it, keep everything sterile. God bless you kid. Minister.