Faster Ester=More Pain, Why?

[stonecold54]

I understand what esters are and there function but one thing I wondered is why test prop hurts more than cyp. Yes one is faster acting than the other but why do the companies have to add more BA content just because it releases faster. Are the faster acting drugs more prone to high infection rates and if so, why? This question has been on my mind for awhile I just always forget to ask it.

 

[Sigmund Roid]

My guess:

At the site there is some hydrolysis, turning for example test prop in test and propionic acid. The latter is quite stinging, while enanthic acid is less so.

Furthermore: shorter ester -> more BA = more irritation, and the BA dissolves in your blood readily, leaving a suspension of oil with hard test prop crystals at the site, if no BB is present.