What organ does Benadryl affect?

Could you please elaborate on the specific organ or organs that Benadryl has an effect on? Is it a direct impact, or does it affect the body's systems indirectly? Additionally, are there any potential side effects or concerns associated with Benadryl's impact on these organs that consumers should be aware of? Understanding the specific nature of Benadryl's interaction with the body is crucial for SAFE and effective use.