Liquid Cytisine Composition With pH Control for Stable Oral Delivery
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Solution Overview
Problem
Existing nicotine addiction treatments, such as cytisine tablets and capsules, face challenges with compliance due to swallowing difficulties and require frequent dosing, and liquid formulations are lacking, with potential side effects like dry mouth.
Innovation Solution
A stable liquid pharmaceutical composition of cytisine is developed, using inorganic pH-regulating agents to maintain a pH between 3.0 and 7.5, free of organic salts or acids, and optionally including viscosity agents and co-solvents for easy administration as a mist, spray, or aerosol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cytisine is administered as tablets or capsules, then the medication can be delivered in a solid form, but patient compliance deteriorates due to swallowing difficulties and the need for frequent dosing
Solution Approach 1:
The patent changes the physical state parameter of cytisine from solid (tablets/capsules) to liquid form, enabling administration without swallowing difficulties and allowing for more convenient dosing regimens while maintaining the active ingredient's efficacy
2Stability of the object's composition
If tablets or capsules are used for cytisine administration, then the medication can be formulated in a stable solid form, but compliance worsens due to the requirement to take sufficient liquid with each dose
Solution Approach 1:
The patent transitions from solid tablet/capsule formulation to liquid formulation, eliminating the need to take additional liquid with each dose while maintaining composition stability through appropriate pH control and stabilizing agents
Solution Approach 2:
The patent employs spray or aerosol delivery systems to administer the liquid cytisine composition, enabling easy application without requiring the patient to consume additional liquids, thus improving administration convenience
3Ease of operation
If conventional liquid formulations are used, then administration convenience is improved, but chemical stability deteriorates due to pH fluctuations and degradation
Solution Approach 1:
The patent optimizes the pH parameter of the liquid formulation to a specific range (pH 3-7, preferably pH 4-6) and employs pH-regulating agents to maintain stability, preventing cytisine degradation while preserving liquid form advantages
Solution Approach 2:
The patent introduces stabilizing agents and pH-regulating components as intermediaries that protect cytisine from degradation in liquid form, enabling long-term chemical stability while maintaining the convenient liquid administration route
4Ease of operation
If cytisine tablets are administered, then the medication can be delivered in a convenient solid form, but side effects worsen due to dry mouth occurring in about 35% of patients
Solution Approach 1:
The patent changes the dosage form from solid tablets to liquid spray/aerosol, allowing for localized oral cavity application that provides moisture and reduces dry mouth symptoms while delivering the required cytisine dose
Data Source
AI summary
The present invention relates to a liquid pharmaceutical composition comprising cytisine, at least one inorganic pH-regulating agent selected from the group consisting of inorganic acids, inorganic buffers, and inorganic acid salts, and water, wherein the liquid pharmaceutical composition has a pH value between 3.0 and 7.5. The present invention furthermore relates to the liquid pharmaceutical composition for use in the treatment of tobacco smoking addiction and other forms of nicotine addiction. Additionally, the invention relates to a liquid pharmaceutical composition comprising cytisine for oral use in the treatment of tobacco smoking addiction and other forms of nicotine addiction.