Hi I am currently on my 5th week of a 12 week cycle of sus @ 500mg /wk, I am concerned because it makes my injection site extremely itchy and red for two to three days after inj. I am very impressed with the size and strength gains I have received so far with the sus. I have a bottle of test enth and am wondering if it is okay to make the switch. Reason being I fear maybe an allergic reaction to the sustanon? Will I crash at all after dropping the sus and picking up the enth? Any input is greatly appreciated! Thanks Guys