Timolol hydrogenmaleate gel and preparation method thereof
A kind of timolol acid gel, gel technology, applied in the field of timolol maleate gel and preparation thereof, can solve the problems of difficult adhesion, poor permeability, inconvenient medication and the like
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Embodiment 1
[0034] A preparation method of timolol maleate gel (sample 1).
[0035] (1) Preparation of gel matrix: take 10.0g carbomer, add 650g water, stir, add 10% sodium hydroxide solution to adjust the pH value to 7.0-9.0, add 100g glycerin and 2.0g sodium benzoate, continue stirring until uniform, A gel matrix is obtained. (2) Total mixing: Weigh 6.68g of timolol maleate (equivalent to 5.00g of timolol), dissolve it in 200g of water, add it to the gel matrix, and then add 5.0g of caprylic capric acid polyethylene glycol Glyceride and 5.0g of azone, adjust the pH value to 6.5-7.5 with 10% sodium hydroxide solution under stirring, and add water to 1000g. (3) Air bubble removal: Under slow stirring, vacuumize for 30 minutes to remove air bubbles. (4) Filling: Fill the prepared gel in the filling machine, and control the minimum filling amount to 20.0g / piece during filling.
Embodiment 2
[0037] A preparation method of timolol maleate gel (sample 2).
[0038] (1) Preparation of gel matrix: take 10.0g carbomer, add 650g water, stir, add 10% sodium hydroxide solution to adjust the pH value to 7.0-9.0, add 100g glycerin and 2.0g sodium benzoate, continue stirring until uniform, A gel matrix is obtained. (2) Total mixing: Weigh 6.68g of timolol maleate (equivalent to 5.00g of timolol), dissolve it in 200g of water, add it to the gel matrix, and then add 5.0g of caprylic capric acid polyethylene glycol Glyceride and 15.0g of azone, adjust the pH value to 6.5-7.5 with 10% sodium hydroxide solution under stirring, and add water to 1000g. (3) Air bubble removal: Under slow stirring, vacuumize for 30 minutes to remove air bubbles. (4) Filling: Fill the prepared gel in the filling machine, and control the minimum filling amount to 20.0g / piece during filling.
Embodiment 3
[0040] A preparation method of timolol maleate gel (sample 3).
[0041] (1) Preparation of gel matrix: take 10.0g carbomer, add 650g water, stir, add 10% sodium hydroxide solution to adjust the pH value to 7.0-9.0, add 100g glycerin and 2.0g sodium benzoate, continue stirring until uniform, A gel matrix is obtained. (2) Total mixing: Weigh 6.68g of timolol maleate (equivalent to 5.00g of timolol), dissolve it in 200g of water, add it to the gel matrix, and then add 5.0g of caprylic capric acid polyethylene glycol Glyceride and 25.0g of azone, adjust the pH value to 6.5-7.5 with 10% sodium hydroxide solution under stirring, and add water to 1000g. (3) Air bubble removal: Under slow stirring, vacuumize for 30 minutes to remove air bubbles. (4) Filling: Fill the prepared gel in the filling machine, and control the minimum filling amount to 20.0g / piece during filling.
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