Do allegry shots really work? I heard some people say it does and some people say it doesn't.

When appropriate. All treatments are intended for specific situations. Allergy injections are recommended for patients with high-level allergic sensitivities demonstrated by skin prick testing, still have symptoms despite multiple, appropriate allergy medications, or cannot tolerate allergy medications for some reason. Allergy shots are very effective when administered in the situations for which they are intended.