Well first id try mixing it with your deca as GHP there mentioned.
If that doesnt work try two differant sites.. maybe 1/2ml of it and 1/2ml
of deca or something less painfull in each glute.
If its still unbearable and lays you up like you said its doing, Id discard it
and get something differant. The Ole Ttokkyo Cyp did me like that one time.
others were using it and or finding ways of using it But For me Man I had to say *uck that! Me and that stuff just didnt get along.
Now that doesnt mean I went back to the guy I bought it from and demanded a refund

(he was bigger then me then

)
I just learned from experience what works for me and what I felt
was Good products and moved on.
goodluck, hope it works out for ya.
you could dilute it with sterile oil you can pick up from about any
research company and that would help with the pain.... its a hassle though
unless you just have a Bunch of it and cant figure out a way to cut it with your deca or other gear.