Toad skin extract dry powder inhaler, as well as preparation method and application thereof
A technology of dry powder inhalation and extract, which is applied in the field of preparation of drugs for the treatment of lung tumors, to achieve the effect of quick onset, improvement of therapeutic effect, and rapid absorption
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Embodiment 1
[0032] 1. Preparation of toad skin extract: wash the dried toad skin, add 10 times the amount of water, decoct twice for 1.5 hours each time, combine the filtrates, concentrate to a relative density of 1.1-1.2 (85 ° C), cool to 40°C, add ethanol to precipitate to make the alcohol content reach 60%, let stand for 24 hours, take the supernatant to recover ethanol until there is no alcohol smell, add ethanol to the concentrate to make the alcohol content reach 85%, let stand for 48 hours, filter , recover ethanol to thick paste, and dry at 60°C to obtain toad skin extract.
[0033] 2. Preparation of inhalant: pulverize the toad skin extract to D 50 Below 5 microns, mix with lactose with a particle size of 45-70 microns at a mass ratio of 1:10, and pack the drug powder into capsules or blister or dry powder inhalers to obtain inhalers.
Embodiment 2
[0035] 1. Preparation of toad skin extract: take the dried toad skin and wash, add 12 times the amount of water, decoct twice, 2 hours each time, combine the filtrates, concentrate to a relative density of 1.2-1.3 (85 ° C), cool to 40°C, add ethanol to precipitate to make the alcohol content reach 70%, let stand for 24 hours, take the supernatant to recover ethanol until there is no alcohol smell, add ethanol to the concentrate to make the alcohol content reach 85%, let stand for 48 hours, filter , recover ethanol to no alcohol smell, spray dry to obtain toad skin extract powder, powder D 50 below 5 microns.
[0036] 2. Preparation of inhalant: Mix the toad skin extract powder, lactose with a particle size of 45-80 microns, and leucine with a particle size of 20-50 microns in a mass ratio of 10:100:1, and package them into The inhaler is obtained in a capsule or blister or dry powder inhaler.
Embodiment 3
[0038] 1. Preparation of toad skin extract: take the dried toad skin and wash it, add 30 times the amount of water, microwave-assisted extraction for 3 times, 1 hour each time, combine the extracts, go through the ultrafiltration membrane with a molecular weight of 1000 and ultrafiltration, the ultrafiltrate Spray drying to obtain toad skin extract powder, powder D 50 below 5 microns.
[0039] 2. Preparation of inhalant: Pack the toad skin extract powder into capsules, blister packs or dry powder inhalers to obtain inhalers.
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