I have been getting the shot about every month to month and 1/2 for about a year to treat Pompholyx a type of eczema on my hands. Turns out I am allergic to formaldehyde from cigarette smoke, I've been a smoker for about 10 years and I am now allergic to my own smoke, ironic... Well, I just quit smoking but, my hands have broken out so its time for one last injection. Kenolog is the only thing that allowed me to continue to work while I narrowed down the source of my allergy. Hopefully now I won't have to get any more injections now that I quit smoking. I have never had any negative reactions or side effects of this drug but, now that I've read some, I'm glad I won't need it anymore. anyone got a cigarette I can bum??lol