narta
Member
Castor oil slows the absorption. PIP is generally either bad raw, bad sterilization and/or high concentration. Test E is problematic for the past years due to manufacturing process being altered in China.Try castor oil, it worked for me.
These days Test D is preferred if you want high mg/ml concentrations or Test C if you want a similar to Test E absorption time.
I go with Test D, can hold up to 300mg/ml easily making TRT a piece of cake.