Olopatadine hydrochloride gel eye drops and preparation method thereof
A technology of olopatadine hydrochloride and eye drops, which can be applied in pharmaceutical formulations, medical preparations with non-active ingredients, sensory diseases, etc., can solve the problem of low bioavailability of eye drops, poor patient acceptance, and physiological toxicity Reaction and other problems, to achieve the effect of reducing the frequency of medication, moderate viscosity, and reducing discomfort
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Embodiment 1
[0018] Take about 6kg of water for injection, add 80g of carbomer under stirring, fully swell and filter to obtain a clear viscous solution. Take about 4 kg of water for injection, add 10 g of olopatadine hydrochloride, 1 g of benzalkonium chloride, and 50 g of sodium chloride, stir to dissolve, filter and sterilize through a microporous membrane, add carbomer to the viscous solution, and stir fully to dissolve uniform. Adjust the pH to 6-8 with 2mol / L hydrochloric acid or sodium hydroxide solution, sterilize with flowing steam, and pack aseptically to obtain the product.
Embodiment 2
[0020] Take about 6kg of water for injection, add 70g of carbomer under stirring, after fully swelling, filter to obtain a clear viscous solution. Take about 4 kg of water for injection, add 20 g of olopatadine hydrochloride, 1 g of benzalkonium chloride, and 50 g of sodium chloride, stir to dissolve, filter and sterilize through a microporous membrane, add carbomer to the viscous solution, and stir fully to dissolve uniform. Adjust the pH to 6-8 with 2mol / L hydrochloric acid or sodium hydroxide solution, sterilize with flowing steam, and pack aseptically to obtain the product.
Embodiment 3
[0022] Take about 6kg of water for injection, add 80g of carbomer under stirring, and after fully swelling, filter to obtain a clear viscous solution. Take about 4kg of water for injection, add olopatadine hydrochloride 10g, methylparaben 3g, and sodium chloride 50g, stir to dissolve, filter and sterilize through a microporous membrane, add carbomer to the viscous solution, stir fully to dissolve uniform. Adjust the pH to 6-8 with 2mol / L hydrochloric acid or sodium hydroxide solution, sterilize with flowing steam, and pack aseptically to obtain the product.
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