best instant cold pack

[AA K]

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I,m looking for an instant cold pack that last for and LONG time, a couple hours? I know all it is, is ammonium nitrate and water. Before you answer, I am not a premed student nor in college I'm not even old enough so if I screw up, please forgive me. 😉

 

[AA K]

links are welcome too.

 

[Drrrrrr. Celty]

SDN is not the place to ask for advice like this. Please go to WebMD or something.

 

[Geekchick921]

SDN is not the place to ask for advice like this. Please go to WebMD or something.

Right you are, serenade. Thread closed.