Olive doesn't fancy the idea of eating a steak with an epinephrine auto-injector, which treats life-threatening allergic reactions.

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Those who have had allergic reactions to insects should always carry an antihistamine and an epinephrine auto-injector for emergencies, experts said.

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It's harder to get teenagers to not take risks when it comes to avoiding problem foods and always carrying the epinephrine auto-injector, Bassett said.

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No one thought to have me carry an auto-injector or rescue medication at all, and so each and every allergic reaction spiraled out of control.

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The only way to stop a life-threatening reaction, called anaphylaxis, is an epinephrine auto-injector, which allergists recommend that everyone with severe food allergies should carry.

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Norton also has a routine for the beginning of Grace's school year: Talking to the teacher about foods and determining where the epinephrine auto-injector should be kept.

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After the usual finger-pointing and questions about why we didn't carry something that could save our lives, the idea of developing a smaller, more portable type of epinephrine auto-injector was born.

CNN: Twins create life-saving allergy device

He carries an epinephrine auto-injector with him.

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It is hard to describe the feeling now that Auvi-Q -- the epinephrine auto-injector that is a culmination of the ideas we had all those years ago -- is available in pharmacies across the United States (and as Allerject in Canada).

CNN: Twins create life-saving allergy device