The invention provides a preparation method of
salbutamol sulfate solution, which specifically relates to the field of
medicine; S1, liquid preparation: 89-91kg water for injection is added to a liquid preparation tank, the temperature of the water for injection is reduced to less than 20°C, and
inert gas is continuously blown in, after the dissolved
oxygen in the water for injection is controlled to be less than or equal to 2ppm,
inert gas is continuously blown in, 885-895g of
sodium chloride is added, stirred and dissolved, pH is adjusted to 3.0-4.0, 60g of
salbutamol sulfate is added, stirred and dissolved, and water for injection less than 20°C is added to make the volume to 100kg to obtain liquid
medicine. S2,
filtration: the liquid
medicine passes through a stainless steel
pipe and is filtered through 2 0.22μm
capsule filters to obtain a filtrate. S3,
potting: the filtrate of step S2 is potted in an
ampoule bottle to obtain a finished product; S4, sterilization: the finished product is sterilized at 121°C for 12min; S5, light inspection and
leak detection: the finished product is subjected to light inspection and
leak detection after sterilization, and the qualified finished product is packaged, inspected and put into storage. The invention effectively solves the problem that the
hardness of tablets increases after
tableting, which leads to a decrease in
dissolution rate.