Pharmaceutical composition having effect of improving blood circulation as well as application of pharmaceutical composition and injection prepared and formed by pharmaceutical composition
A technology for improving blood circulation and composition, which is applied in the direction of medical preparations containing active ingredients, drug combinations, ether/acetal active ingredients, etc., can solve the problem that ginkgo biloba extract and its preparations are difficult to meet quality requirements, cannot To ensure the safety of medication, the active ingredients are not clear, etc., to achieve the effect that is beneficial to clinical use, suitable for industrial production, and clear ingredients
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Embodiment 1
[0045] The present invention provides a kind of preparation method of the injection of the pharmaceutical composition that has effect of improving blood circulation, comprises the following steps:
[0046] (1) After getting Ginkgo biloba pulverization, add 95% ethanol and reflux extraction 3 times, each reflux extraction time is 0.5 hour, the quality that adds 95% ethanol at every turn is 10 times of described Ginkgo leaf quality; Filter, the gained filtrate Concentrate under reduced pressure to 0.2 times the mass of ginkgo leaves, and refrigerate for 48 hours;
[0047] (2) Scrape off the slick oil and take off the lower layer liquid;
[0048] (3) Add water for injection to 0.5 times of the quality of ginkgo leaves in the lower layer liquid, and refrigerate for 48 hours; filter, concentrate the filtrate under reduced pressure to 0.2 times of the quality of ginkgo leaves, put to room temperature, add 95% ethanol, make the alcohol content to 80%, the solution after alcohol prec...
Embodiment 2
[0053] The present invention provides a kind of preparation method of the injection of the pharmaceutical composition that has effect of improving blood circulation, comprises the following steps:
[0054] (1) After getting Ginkgo biloba pulverization, add 97% ethanol and reflux extraction 4 times, each reflux extraction time is 0.7 hour, the quality that adds 97% ethanol at every turn is 11.5 times of described Ginkgo leaf quality; Filter, the gained filtrate Concentrate under reduced pressure to 0.25 times the mass of Ginkgo biloba leaves, and refrigerate for 51 hours;
[0055] (2) Scrape off the slick oil and take off the lower layer liquid;
[0056] (3) Add water for injection to 0.4 times of the quality of ginkgo leaves in the lower layer liquid, and refrigerate for 45 hours; filter, concentrate the filtrate under reduced pressure to 0.25 times of the quality of ginkgo leaves, put to room temperature, add 97% ethanol, make the alcohol content to 82%, the solution after a...
Embodiment 3
[0061] The present invention provides a kind of preparation method of the injection of the pharmaceutical composition that has effect of improving blood circulation, comprises the following steps:
[0062] (1) After getting Ginkgo biloba and pulverizing, add 98% ethanol and reflux extraction 5 times, each reflux extraction time is 0.6 hour, the quality that adds 98% ethanol at every turn is 9.5 times of described Ginkgo biloba quality; Filter, the gained filtrate Concentrate under reduced pressure to 0.15 times the mass of ginkgo leaves, and refrigerate for 45 hours;
[0063] (2) Scrape off the slick oil and take off the lower layer liquid;
[0064] (3) Add water for injection to 0.6 times of the quality of ginkgo leaves in the lower layer liquid, and refrigerate for 51 hours; filter, concentrate the filtrate under reduced pressure to 0.15 times of the quality of ginkgo leaves, put to room temperature, add 98% ethanol, make the alcohol content to 78%, the solution after alcoh...
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