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It only takes about 20 to 30 seconds to start working, and will take a bit longer, anywhere from five minutes to a half hour to get rid of the reaction. Sometimes a second shot of epinephrine may be required.

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12y ago
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11y ago

A standard 0.1 mg dose for the relief from anaphlaxis will keep your airway open for 20-30 minutes. In the case of cardiac arrest, the dose according to the current Advanced Cardiac Life Support guidelines is 1 mg 2-3 minutes apart between compressions for asystole, ventricular tachycardia, or ventricular fibrillation.

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14y ago

Injections of any kind of drugs works immediatly you bybass the digestive system and put something directly into your blood which then pumps through out the body and the brain.

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12y ago

as far as adrenaline from something like fear or a rollercoaster that's instant. as for the kind you inject yourself with i cant say for sure

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10y ago

It has about a 4 minute half life.

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Q: How long does it take for adrenaline to take effect?
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