HONOLULU (KITV) - What if the diabetic's daily insulin shot could be replaced by a pill?

That's what researchers at the Harvard school of public health are studying. 

Their report in the journal of the American Medical Association claims that they've overcome the biggest obstacle, making an insulin pill that can endure the caustic acids of the stomach to deliver the drug to the intestines, where they can be absorbed. 

They've combined insulin, which regulates blood sugar, with safe doses of naturally-occurring substances called choline and geranic acid. 

Both can be found in the body, and even plants like lemongrass. 

Combining all three resulted in a pill that was very effective at decreasing blood sugar levels, lasting longer than insulin traditionally injected into the skin. 

No insulin pill has previously worked until now. 

This pill could be stored at room temperature or in the fridge for months before going bad. 

Here's the frustrating part: the pill is not yet ready for public use. 

There's further testing needed, and nobody knows how much the drug would cost. 

But his study provides a potential blueprint for a way other injectable drugs could be delivered in pill form. 

Insulin, without the "ouch".