Clinical Trial

Digestive symptoms interrupting your child's life?

What is CISD?

Congenital sucrase-isomaltase deficiency is a rare genetic disorder that affects an individual’s ability to digest certain sugars. People with this condition cannot break down the sugars sucrose and maltose. Sucrose (a sugar found in fruits, and also known as table sugar) and maltose (the sugar found in grains) are called disaccharides because they are made of two simple sugars.

Congenital sucrase-isomaltase deficiency usually becomes apparent after an infant is weaned and starts to consume fruits, juices, grains, and other starchy food. After ingestion of sucrose or maltose, an affected individual will typically experience stomach cramps, bloating, excess gas production, and diarrhea.

Qualified Patients Should:

  • 6 Months up to 18 years of age
  • Have experienced persistent and unpleasant digestive problems
  • Difficulty digesting carbohydrates or sugar.
  • Available for 20 day study period.
  • Will agree to to take study medication with every meal or snack.


  • Diagnostic appointment
  • Study-related physical exam & procedures at no cost
  • Compensation up to $210.00 for time & travel

What to expect

Study participation provides a chance to recieve new or previously unavailable procedures, at no cost. 

Throughout the study you will be closely evaluated to ensure that the treatment received meet the highest scientific and medical standards. 

3A’s researchers and staff have been carefully selected for their certifications and ability to preform study related procedures and exceptional patient care. 

Participating in a clinical study is always voluntary (your choice). You can stop taking part in the study at any time without consequences to your usual medical care. 

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