I haven’t tried Glow but my wife and I take Klow and experienced thaw same issue. The injections were crazy painful for 24 hours! We started taking half the dose and then injected that dose in multiple locations. For instance: we were taking 20 units in one injection site. We cut it down to 10 units and split that into 2 different injection sites (inject 5 units into each butt cheek). We do that 3-4 times per week and haven’t had anymore painful symptoms. I’m hoping this method will help build my tolerance for Klow moving forward.