The only thing I disagree with in this whole thread is to use calculators. I may be alone here but I will die on this hill...LEARN THE MATH! Do not use calculators until you understand concentration, dilution, and dosing.
Biggest lesson learned is telling friends, family, and coworkers. I LOVE helping people but when friends and family hear and see the progress, they often have ZERO interest in researching and just want a vial...I have sold half of my reta at cost to good friends and coworkers, and I had to reconstitute, sell it to them, provide insulin syringes, and then coach them on what to expect...I label anything I give away as clearly RUO but it's still risky and I don't plan on doing it anymore...
Also, LEARN THE MATH! Do not use calculators until you understand concentration, dilution, and dosing.