Biopharmaceutical study of insulin suppositories

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery Systems
• Biopharmaceutics

Background:

• Insulin therapy is crucial for diabetes management.
• Rectal administration offers an alternative route for drug delivery.
• Developing effective rectal insulin formulations is challenging.

Purpose of the Study:

• To investigate the feasibility of insulin administration via suppositories.
• To evaluate the impact of various carriers on rectal insulin absorption.
• To identify optimal surfactants for enhancing insulin bioavailability.

Main Methods:

• Insulin was formulated into suppository dosage forms with different carriers.
• Rectal absorption of insulin was studied in rabbit models.
• The efficacy of Brij 58 as an absorption-promoting surfactant was assessed.

Main Results:

• Significant insulin absorption was achieved through rectal administration.
• Suppositories containing Brij 58 demonstrated highly effective insulin absorption.
• Brij 58 acted as a potent absorption-promoting surfactant.

Conclusions:

• Insulin administration in suppository form is viable.
• Brij 58 significantly enhances rectal insulin absorption.
• Rectal insulin suppositories represent a promising alternative delivery method.