A needle cap assembly for use in combination with a needle pen comprising: (i) a needle cap having a needle cannula for injecting a fluid medication into an injection site, (ii) an internal cap configured to be disposed over an injection end of the needle cap, (iii) an external cap having a cavity configured to envelop the internal and needle caps, (iv) a sealing tab configured to seal a cavity of the external cap for enclosing or housing the needle cap assembly, and (v) a cleansing swab disposed in internally of the needle cap assembly. The cleansing swab is disposed internally of the needle cap and includes an absorptive material loaded with a cleansing fluid to clean an injection site prior to injection of fluid medication.
