82 results about "Cetirizine" patented technology

A dosage form containing cetirizine as an immediate release component and pseudoephedrine or a pharmaceutically acceptable salt thereof as a controlled release component. A portion of the pseudoephedrine can also be incorporated as an immediate release component. The dosage form is free of alcohols having a molecular weight lower than 100 and reactive derivatives thereof.

The invention relates to a cetirizine molecularly imprinted polymer monolithic column and a preparation method thereof. The cetirizine molecularly imprinted polymer monolithic column is composed of raw materials of, by mass, 1-3% of cetirizine, 3-4% of 4-vinyl pyridine, 20-25% of ethylene gylcol dimethacrylate, 42-45% of mixed solution (eutectic solvent) of ethylene glycol and choline chloride, 4-5% of dimethylformamide, 13-22% of 1-butyl-3-methylimidazolium tetrafluoro borate and 0.5-1% of azobisisobutyronitrile. The method includes the steps of adding ionic liquid and the eutectic solvent of ethylene glycol and choline chloride to a polymerization system, using cobalt ions as a metal ion hub to enhance the effect of imprinting recognition, and preparing molecularly imprinted polymer (MIP) of a successive rod shape in a stainless steel column. The cetirizine molecularly imprinted polymer (MIP) monolithic column obtained through the preparation method has the advantages of good permeability and obvious imprinting effects and can have the model cetirizine imprinting factors up to 31.54, and meanwhile, the method is simple in preparation process and avoids the use of volatile liquid, thereby reducing harmful gas emission to the environment.

The present invention relates to a method for treating a behavior disorder comprising the administration of a therapeutically effective amount of antihistamine, such as ceterizine, fexofenadine; loratadine, and desloratadine. The behavioral disorders may include ADHD, anxieity, depression, and autism. The method may include the administration of the antihistamine in combination with a stimulant medication, such as methylphenidate, thereby to achieve a synergistic effect. In any event, the amount of antihistamine and/or stimulant is effective to downregulate neurotrophic factors such as nerve growth factor or CD40. The invention is also directed to a method of preventing the onset of behavior disorders in patients presenting with symptoms of allergic rhinitis.

Stable and palatable taste masked pharmaceutical compositions of substituted benzhydrylpiperazines and processes for preparing them.

The present invention provides stable topical formulations of cetirizine that provide a comfortable formulation when instilled in the eye and is effective in the treatment of allergic conjunctivitis and/or allergic conjunctivitis. The invention further provides methods of treating allergic conjunctivitis and/or allergic rhinoconjunctivitis in a subject in need of such treatment by topical application of the cetirizine formulations of the invention directly to the eye.

The invention discloses an oral preparation composition prepared by being matched with an alkaline compound taken as a stabilizing agent in cetirizine. The stability of an oral preparation added with the stabilizing agent is greatly improved.

The invention relates to the technical field of preparation and application of a chiral selector, and particularly discloses a bis-(6-oxo-m-nitrobenzaldehyde sulfonyl)-beta-cyclodextrin (beta-CD-N2) as well as a preparation method and an application of the beta-CD-N2 serving as the chiral selector in high-performance capillary electrophoresis, namely the application of the beta-CD-N2 in preparation of a chiral electrophoresis monolithic column for separating chiral materials. The preparation method is characterized in that firstly a synthesis method of the beta-CD-N2 is confirmed, the derivative is characterized by using means such as ultraviolet, infrared, photoelectron spectroscopy, nuclear magnetic resonance, mass spectrometry and elemental analysis, after comprehensive analysis, the molecular formula of the derivative is identified as C54H76O43N2S2, and the derivative is identified as a target derivative and is not reported before. The beta-CD-N2 is used for preparing a chiral HPCE (high-performance capillary electrophoresis) monolithic column and separating the chiral materials such as cetirizine, mexiletine, propafenone, ofloxacin and bupivacaine and can realize baseline separation, and accordingly, a novel method for quantitative determination of HPCE of a multi-chiral material single enantiomer can be established.

The present invention relates to a use of a dexibuprofen levocetirizine double-layer sustained release tablet in treatment of airway inflammation. The tablet is composed of two layers, wherein one layer is the rapid-release part, composed of dexibuprofen, levocetirizine dihydrochloride and a pharmaceutically acceptable rapid-release additive; the other layer is the sustained-release part, composed of dexibuprofen and a pharmaceutically acceptable sustained-release additive.

PCT No. PCT/CA97/00496 Sec. 371 Date Jan. 20, 1999 Sec. 102(e) Date Jan. 20, 1999 PCT Filed Jul. 11, 1997 PCT Pub. No. WO98/02425 PCT Pub. Date Jan. 22, 1998The present invention relates to a process for the preparation of a [2-[4-[4-(chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]acetic acid derivative of formula I: and, in particular, for the preparation of cetirizine. The method comprises the oxidation of a primary alcohol of a hydroxyzine. Cetirizine is a non-sedating type histamine H1-receptor antagonist and is used in the treatment of allergic syndromes.

A pharmaceutical composition useful in the treatment of sneezing, itching runny nose, nasal congestion, redness of the eye, tearing, itching of the ears or palate, shortness of breath, inflammation of the bronchial mucosa, reduced Forced Expiratory Volume In One Second (FEV1), coughs, rash, itchy skin, headaches, and aches and pains associated with seasonal allergic rhinitis, perennial allergic rhinitis, common colds, otitis, sinusitus, allergy, asthma, allergic asthma and/or inflammation, in a mammalian organism in need of such treatment. The composition comprises: i) an effective amount of at least one leukotriene antagonist selected from a) montelukast, b) 1-(((R)- (3-(2-(6,7- difluoro-2- quinolinyl)ethenyl) phenyl)-3-(2- (2-hydroxy-2- propyl)phenyl) thio)methylcyclopropaneacetic acid; c) 1-(((1(R)-3 (3-(2-(2,3- dichlorothieno[3, 2-b]pyridin-5-yl) -(E)-ethenyl)phenyl) -3-(2-(1-hydroxy-1- methylethyl) phenyl)propyl) thio)methyl) cyclopropaneacetic acid; d) pranlukast; or f) [2-[[2-(4-tert -butyl-2-thiazolyl) -5-benzofuranyl] oxymethyl]phenyl] acetic acid; or a pharmaceutically acceptable salt thereof; in admixture with ii) an effective amount of at least one antihistamine which is descarboethoxyloratidine, cetirizine, fexofenadine, ebastine, astemizole, norastemizole, epinastine, efletirizine or a pharmaceutically acceptable salt thereof.

In one aspect, the present invention features a tablet including: (i) a first drug layer including naproxen; (ii) a second drug layer including a decongestant (e.g., pseudoephedrine) wherein said second drug layer is a sustained release layer adapted to deliver a therapeutically effective amount of pseudoephedrine for a period of at least twelve hours; and (iii) a barrier layer that does not include naproxen, wherein the barrier layer is in contact with the first drug layer; and (iv) a third drug layer including cetirizine, wherein the third drug layer is in contact with the barrier layer and is not in contact with the first drug layer.

In one aspect, the present invention features a tablet including a first drug layer and a second drug layer, wherein: (i) the first drug layer includes first drug particles including naproxen and third drug particles including cetirizine, where the first drug particles and/or the third drug particles are coated with an immediate release coating; and (ii) the second drug layer including pseudoephedrine, wherein said second drug layer is a sustained release layer adapted to deliver a therapeutically effective amount of pseudoephedrine for a period of at least twelve hours.

A pharmaceutical composition for the treatment of rhinitis by nasal or ocular administration comprises zwitterionic cetirizine, polar lipid liposome, a pharmaceutical acceptable aqueous carrier and, optionally, a pharmaceutically acceptable buffer capable of providing a pH of from pH 4.0 to pH 8.0, with the proviso that, if the polar lipid comprises phospholipid, the amount of phospholipid in the composition from is from 10 mg per mL to 120 mg per mL. Also disclosed are methods for its preparation and methods for treating rhinitis by its nasal or ocular administration.

The invention provides a method for detecting related substances in a cetirizine hydrochloride sample. The detection method comprises the following steps: using high performance liquid chromatographyto detect the cetirizine hydrochloride sample, wherein the mobile phase of the high performance liquid chromatography comprises a mobile phase A which is an aqueous solution containing 0.05mol/L of sodium dihydrogen phosphate, and of which the pH value is 3.8 and a mobile phase B which is acetonitrile. The detection method of the related substances in the cetirizine hydrochloride sample provided by the invention can simply and quickly detect the related substances in the cetirizine hydrochloride sample and peaks can be separated effectively. The detection method is simple to operate and shorter in analysis time.

The compound of formula (8), in racemic or single enantiomeric form, is useful in making N-(diphenylmethyl)-piperazines such as cetirizine and levocetrizine.

In one aspect, the present invention features a method of producing a tablet including cetirizine including the steps of: (i) mixing cetirizine, a polyol, and a solvent for the cetirizine to form a cetirizine:polyol complex, wherein the solvent comprises water and an alkalizing agent and has a pH from about 2 to about 7; (ii) isolating particles of the cetirizine:polyol complex from the mixture; and (iii) forming the particles into a tablet.