Pharmaceutical formulations
First Claim
1. A cannabis-based liquid pharmaceutical formulation for oro-pharangeal delivery comprising cannabidiol (CBD) and tetrahydrocannabinol (THC), formulated as a pump-action spray in a pre-defined ratio by weight, a solvent and a co-solvent, wherein the CBD and THC are provided as carbon dioxide extracts obtained from two or more different Cannabis chemovars from which non-specific lipid-soluble material has been removed, and in which the Cannabis chemovars include a first chemovar in which THC is more than 95% of the total cannabinoid and a second chemovar in which CBD is more than 90% of the total cannabinoid, and wherein the CBD and THC are present in the formulation in an amount of at least 1.0 mg per 0.1 ml, and wherein the solvent is ethanol, and the co-solvent is a polyoxyethylene castor oil derivative, propylene glycol or glycerol.
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Accused Products
Abstract
The invention relates to pharmaceutical formulations for use in the administration of lipophilic medicaments via mucosal surfaces. In particular the invention provides pharmaceutical formulations for use in administration of a lipophilic medicament via a mucosal surface which upon hydration form an emulsion containing the lipophilic medicament which is capable of adhering to a mucosal surface and allowing controlled release of the medicament. The invention further provides pharmaceutical formulations which contain, as active ingredients, specific combinations of cannabinoids in pre-defined ratios.
27 Citations
34 Claims
- 1. A cannabis-based liquid pharmaceutical formulation for oro-pharangeal delivery comprising cannabidiol (CBD) and tetrahydrocannabinol (THC), formulated as a pump-action spray in a pre-defined ratio by weight, a solvent and a co-solvent, wherein the CBD and THC are provided as carbon dioxide extracts obtained from two or more different Cannabis chemovars from which non-specific lipid-soluble material has been removed, and in which the Cannabis chemovars include a first chemovar in which THC is more than 95% of the total cannabinoid and a second chemovar in which CBD is more than 90% of the total cannabinoid, and wherein the CBD and THC are present in the formulation in an amount of at least 1.0 mg per 0.1 ml, and wherein the solvent is ethanol, and the co-solvent is a polyoxyethylene castor oil derivative, propylene glycol or glycerol.
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18. A method of preparing a Cannabis-based pharmaceutical formulation which comprises CBD and THC in a pre-defined ratio by weight which method comprises the steps of:
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a) providing two or more different Cannabis plant chemovars for which the amount of CBD and THC by weight is known, and wherein THC is more than 95% of the total cannabinoid in the first chemovar and CBD is more than 90% of the total cannabinoid in the second chemovar; b) preparing a carbon dioxide extract of said two or more Cannabis chemovars; c) removing non-specific lipid-soluble material from the extract; d) formulating a material from said extract or extracts prepared in step (c) which exhibits said pre-defined ratio by weight of CBD to THC; and e) further formulating the product of step (d) into a liquid pharmaceutical formulation for oropharangeal delivery with a pharmaceutically acceptable carrier or diluent, a solvent and a co-solvent;
wherein the CBD and THC are present in the formulation in an amount of at least 1.0 mg per 0.1 ml;
wherein the solvent is ethanol, and the co-solvent is a polyoxyethylene castor oil derivative, propylene glycol or glycerol; and
wherein the liquid pharmaceutical formulation is formulated as a pump-action spray. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 29, 30, 31, 32, 33, 34)
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Specification