injection sting

[powerliftmike]

you guys ever noticed how hgh and slin are painless, but hcg feels like a small bee bit you? all are same temp out of the fridge and same slin pin. what causes this?

[Big]

I've never gotten any pain from hcg.

[powerliftmike]

its slight, nothing bad and only during injection. i once thought it was just b/c it was cold, but dont get anything with slin or gh even tho the volume is even larger

[productive]

havn't used gh or slin yet, but i do get a slight sting from hcg.