Needle Size 4mm or 8mm

[Phatmax]

hi guys ive been using 4mm needles with my reta no issues but my friend is a doctor and said 8mm is better is this true I know should trust but why change?

 

[glphat]

I really don't think it would make a difference considering the fact that it just needs to get under the skin. If anything, I would be worried of accidentally injecting into muscle if you inject in the thigh area or under your arm.

 

[zpped]

hi guys ive been using 4mm needles with my reta no issues but my friend is a doctor and said 8mm is better is this true I know should trust but why change?

4mm is enough. But many of us stopped using 4mm as it is just finicky and more likely to end up with site reactions. I actually prefer 6mm for most peptides and 8mm for very shallow IM on my delts and ventroglute (I'm very lean now so that works fine for me).