Modified Release Doxycycline Pellets Reduce Food Effect

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Solution Overview

Problem

Doxycycline's oral administration is affected by significant food effects, leading to variations in bioavailability and increased risk of esophageal irritation, which complicates treatment and patient compliance, especially for conditions like rosacea and acne.

Innovation Solution

A modified release composition of doxycycline incorporating water-soluble and insoluble polymers with pharmaceutically acceptable excipients, designed to release the drug slowly, reducing the peak plasma concentration and maintaining therapeutic levels over a longer period, thereby minimizing food effects and esophageal irritation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If doxycycline is administered orally in conventional formulations, then the drug can be delivered to treat bacterial infections and inflammatory conditions, but significant food effects occur leading to variations in bioavailability and increased esophageal irritation

Engineering Contradiction:

Improvebioavailability consistencyVSAvoidesophageal irritation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The doxycycline dosage is segmented into multiple smaller pellets or granules within a single capsule, each containing a portion of the total doxycycline hyclate. This segmentation allows for controlled dissolution and release of the drug over time, reducing peak plasma concentration and minimizing food effects while maintaining consistent bioavailability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The doxycycline hyclate is pre-coated or encapsulated in a protective matrix before administration. This preliminary action creates a barrier that controls drug release, prevents direct contact with esophageal tissue, and ensures consistent absorption regardless of food presence in the gastrointestinal tract

Inventive Principle:

Principle #10Preliminary action

2Reliability

If doxycycline is given in higher doses for antibiotic activity, then effective treatment of bacterial infections is achieved, but gastrointestinal side effects and esophageal irritation increase

Engineering Contradiction:

Improveantibiotic efficacyVSAvoidgastrointestinal side effects

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The formulation provides continuous, controlled release of doxycycline hyclate over an extended period (12-24 hours), maintaining therapeutic plasma concentrations throughout the dosing interval. This continuous action ensures effective antibiotic coverage while avoiding the peaks and troughs associated with conventional dosing that cause gastrointestinal side effects

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The invention changes the release rate parameter of doxycycline from rapid (conventional) to controlled/sustained. By adjusting the release kinetics through the formulation matrix, the drug maintains steady plasma concentrations within the therapeutic window, achieving effective antibiotic activity while minimizing concentration-dependent gastrointestinal toxicity

Inventive Principle:

Principle #35Parameter changes

3Object-affected harmful factors

If doxycycline formulations require specific dosing restrictions (taking with food or remaining upright), then esophageal irritation is prevented, but patient compliance and convenience decrease

Engineering Contradiction:

Improveesophageal irritation preventionVSAvoidpatient compliance

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The formulation is designed to be self-protective, automatically controlling drug release and preventing esophageal irritation through its controlled-release mechanism without requiring patient adherence to complex dosing instructions. The formulation itself provides the protection against irritation that would otherwise require behavioral compliance from the patient

Inventive Principle:

Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The modified release composition achieves reduced food effects, maintaining bioequivalence with commercial formulations while minimizing esophageal irritation, enhancing patient compliance and treatment efficacy for conditions like rosacea and acne.

Implementation Method 1

A modified release composition of doxycycline incorporating water-soluble and insoluble polymers with pharmaceutically acceptable excipients, designed to release the drug slowly

Methodology Applied

Scientific EffectModified release:

Implementation Method 2

designed to release the drug slowly, reducing the peak plasma concentration and maintaining therapeutic levels over a longer period

Methodology Applied

Scientific EffectSustained release:

Data Source

PatentUS10300081B2Modified release doxycycline composition

Publication Date: 2019.05.28 GALDERMA HLDG SA

AI summary

Doxycycline formulations with a reduced food effect are disclosed. Particularly disclosed are modified release formulations which can be administered once a day and exhibit a reduced food effect. Methods of treating inflammatory conductions such as rosacea or inflammatory symptoms such as the papules and pustules of rosacea or acne vulgaris are also disclosed.