As of version 3.0.5, the following formulas were removed:

Calvert
Corticosteroids Converter
NAC Dosing
Opioid Converter
Pediatric Resuscitation Doses
Dose Calculator (was planned for future versions)

Apparently they were forced by Apple to remove them to comply with the App Store policy...
However, Epocrates and many other medical apps have drug dosage calculators. Why then should a great app like MedCalc not be allowed to have drug dose calculators?
I don't know the details of why the formulas had to be removed, but vote if you want the formulas back!

See here:
http://medcalx.ch/dosegate.html