Doxycycline Tablet with Segmented Release for Reduced Food Effect
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Solution Overview
Problem
Commercially available doxycycline capsules for rosacea treatment exhibit a significant food effect, requiring patients to take the medication on an empty stomach, which complicates patient convenience and compliance.
Innovation Solution
A once-daily tablet formulation of doxycycline with a reduced food effect, comprising a combination of immediate-release and controlled-release portions, allowing for administration with or without food, thereby minimizing the impact of food on drug absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If doxycycline is administered in immediate-release capsule form, then the drug is rapidly absorbed, but the food effect significantly decreases Cmax and AUC0-t
Solution Approach 1:
The doxycycline dosage is divided into two distinct release portions: an immediate-release portion (50-95% of total dose) for rapid absorption and a controlled-release portion (5-50% of total dose) for sustained release. This segmentation allows the drug to achieve both rapid initial absorption and sustained release over time, reducing the impact of food on overall bioavailability while maintaining therapeutic efficacy.
2Reliability
If patients take doxycycline on an empty stomach to avoid food effect, then bioavailability is improved, but patient convenience and compliance deteriorate
Solution Approach 1:
The invention changes the release rate parameter of doxycycline by incorporating a controlled-release portion that releases the drug slowly over time. This parameter change allows the medication to maintain effective plasma concentrations even when taken with food, thereby improving patient convenience and compliance without sacrificing bioavailability.
3Reliability
If a higher dose of doxycycline is administered to overcome food effect, then therapeutic levels may be achieved, but the risk of side effects and toxicity increases
Solution Approach 1:
The controlled-release portion provides continuous release of doxycycline over an extended period, maintaining steady plasma concentrations. This continuous action ensures therapeutic efficacy without requiring high peak doses, thereby reducing the risk of side effects and toxicity associated with higher immediate doses.
4Device complexity
If doxycycline is formulated as a single immediate-release dose, then the formulation is simple, but the duration of action is insufficient for once-daily dosing
Solution Approach 1:
The tablet is segmented into two functional portions with different release characteristics: an immediate-release portion for rapid onset and a controlled-release portion for extended duration. This segmentation achieves once-daily dosing capability while maintaining relative formulation simplicity through a single oral administration.
Data Source
AI summary
The present invention relates to a once daily tablet comprising doxycycline at sub-antibiotic dose and one or more pharmaceutically acceptable excipients, wherein the tablet exhibits a reduced food effect. The invention further provides a method of treatment of rosacea by administering to a person in need thereof the doxycycline tablet with or without food. A process of preparing the tablet is also provided.