First aid pen having separate compartments

A first aid pen having separate compartments comprising:

• a hypodermic needle that extends to expose a bottommost end of the hypodermic needle from a pressure cap;
• wherein a first compartment containing a first component is positioned above a second compartment containing a second component;
• wherein a member seals off the first compartment from the second compartment;
• wherein the first compartment includes a slideable member that when pushed downwardly engages and punctures a membrane thereby enabling the first component to descend downwardly and mix with the second component immediately prior to intravenous or intramuscular injection via the hypodermic needle;
• wherein the pressure cap includes a needle hole that enables the hypodermic needle to extend and retract with respect to the pressure cap;
• wherein the hypodermic needle is in fluid communication with the second compartment;
• wherein a release button controls fluid flow from the second compartment to the hypodermic needle;
• wherein the release button includes a button spring, which biases the release button outwardly, and upon depression of the release button a button member slides across a channel to align a button member hole with said channel thereby enabling uninterrupted fluid flow from the second compartment to the hypodermic needle;
• wherein a retraction spring located around the hypodermic needle when released retracts the hypodermic needle upwardly a retraction needle distance only after injection.