CN110200965A - 一种宠物用复方伊维菌素透皮喷剂及其制备方法 - Google Patents
一种宠物用复方伊维菌素透皮喷剂及其制备方法 Download PDFInfo
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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
本发明公开了一种宠物用复方伊维菌素透皮喷剂及其制备方法。所述透皮喷剂由如下重量份数的组分组成:伊维菌素0.025~0.05份,甲硝唑0.08~0.15份,氯唑西林0.08~0.15份,氮酮2份,甘油甲缩醛8份,丙二醇100份。本发明所述复方透皮喷剂的活性成分由伊维菌素、氯唑西林和甲硝唑按照特定比例组成,并添加特定的辅料,制备得到;其适用于多种重症病原性疾病,如宠物的体外寄生虫如疥螨、蠕形螨、耳痒螨等侵袭及其皮肤软组织葡萄球菌、厌氧菌继发感染或混合感染的严重型皮肤病,防治效果好;同时,所述透皮喷剂稳定性好,可长期避光保存,有效期长。
Description
技术领域
本发明涉及兽用治疗药物技术领域,更具体地,涉及一种宠物用复方伊维菌素透皮喷剂及其制备方法。
背景技术
宠物皮肤病是一种常见的多呈慢性经过的疾病,由于患部瘙痒,动物表现烦躁不安,因搔抓导致患部皮肤破损,从而发生继发性感染等。若得不到及时治疗加上卫生条件又差,皮肤病常经久不愈,痒螨、疥螨、虱、蚤等体外寄生虫的侵袭将使病情日益加重。
宠物皮肤病主要分为细菌性、真菌性、寄生虫性、变态反应性以及营养缺乏性皮肤病,但以寄生虫性、真菌性皮肤病发病率较高。例如犬寄生虫性皮肤病的临床发病率约占皮肤病的60%以上。通过对274只皮肤病犬的调查,发现蠕形螨病占28.30%,疥螨病占26.12%,耳痒螨病占15.06%,真菌性皮肤病占15.74%,维生素和微量元素缺乏性皮炎占4.99%,自咬症占2.32%,病毒性皮炎占1.46%,过敏、湿疹和脓皮症占6.01%;其中螨虫和真菌混合感染性皮肤病占45.58%。
通过对856只观赏犬和军(警)犬皮肤病调查,其中半数以上为螨的感染,螨病中常见的有疥螨、耳痒螨和蠕形螨,两种螨同时感染的情况也较多,调查结果显示,犬皮肤病中疥螨病占45.49%,耳痒螨病占20.84%,蠕形螨病占9.22%,真菌性皮肤病占12.36%,维生素和微量元素缺乏性皮炎占5.68%。可见临床主要为螨病和真菌性皮肤病,螨病中常见的螨虫有疥螨、蠕形螨和耳痒螨,而蠕形螨病有逐年上升的趋势。
动物蠕形螨病在皮肤病中危害最大,尤其在宠物犬类,它是由蠕形螨寄生于犬皮脂腺或毛囊而引起的一种顽固性寄生虫性皮炎。临床上病初可见患犬眼圈周围、鼻梁上部、耳朵周围的皮肤发红或有小米大小圆形红色小点,且与正常的皮肤有明显的界线和不同;也有在背部、颈部、腹部和大腿内侧,随着病情的发展红色小点逐渐形成丘疹(小疙瘩),并逐渐破溃,流出黄色脓汁或红色脓血,并有脱毛现象。由于螨虫对皮肤的机械性刺激和其分泌毒素对皮肤的刺激,使患犬皮肤有剧痒现象出现,致使病犬常用前爪挠患部,由此可能造成皮肤出血和皮肤的严重化脓性炎症,在溃烂皮肤内部极易引起厌氧性细菌或葡萄球菌感染,严重时造成脓毒败血症甚至死亡,增加了临床治疗的难度。
对于动物的皮肤病,尤其是重症病原性疾病,往往单独应用一种药物治疗的效果不会理想,通常采用两种或两种以上药物同时治疗,注意联合用药才能达到理想的治疗效果。而目前,宠物医疗行业中,大多数常用的商品化抗寄生虫药物,如:拜宠清、大宠爱、通灭等,都没有针对性治疗宠物的螨虫病与脓皮症。已知大多数药物多是针剂、片剂、洗浴香波等。洗浴香波不仅使用不方便,作用于破损皮肤有一定毒性。使用针剂或片剂,药物到达局部后,其浓度会有不同程度的降低。
因此,有必要提供复配药物透皮喷剂,即可以同时针对多种病原性皮肤病,同时还具有更好的防治效果,毒副作用小。
发明内容
本发明的目的在于针对宠物的重症皮肤疾病,提供一种宠物用复方伊维菌素透皮喷剂。本发明所述复方伊维菌素透皮喷剂的活性成分由伊维菌素、氯唑西林和甲硝唑按照特定比例组成,并添加特定的辅料,制备成为复方透皮喷剂,对宠物(包括犬、猫等,其中牧羊犬品系除外)经体外寄生虫如疥螨、蠕形螨、耳痒螨等侵袭后及其皮肤软组织葡萄球菌、厌氧菌继发感染或混合感染的重症型皮肤病具有很好的疗效,其使用后经皮肤吸收,进入皮肤内层、真皮层及脂肪层,产生持久的杀灭作用,杀灭厌氧菌和寄生在皮层的疥螨、痒螨和蠕形螨。。
本发明的另一目的在于提供所述宠物用复方伊维菌素透皮喷剂的制备方法。
本发明的上述目的是通过以下方案予以实现的:
一种宠物用复方伊维菌素透皮喷剂,由如下重量份数的组分组成:伊维菌素0.025~0.05份,甲硝唑0.08~0.15份,氯唑西林0.08~0.15份,氮酮2份,甘油甲缩醛8份,丙二醇100份。
伊维菌素是从土壤微生物阿佛曼链霉菌发酵产生的半合成大环内酯类抗寄生虫药,具有广谱、高效、用量小和安全等优点,伊维菌素对体内外寄生虫特别是线虫和节肢动物具有良好的驱杀作用,可用于防治畜禽的多种寄生虫病,例如伊维菌素对犬的耳痒螨、疥螨均有良好的驱杀作用,还可以预防犬心丝虫病,且一次投药可同时驱杀体内外寄生虫而得到广泛的应用。伊维菌素在皮肤表面或经透皮深入到皮下及真皮层、脂肪层后,存留时间长,可产生持久的良好驱杀体表寄生虫作用。
甲硝唑又名灭滴灵,对大多数厌氧菌具有较强的作用,临床主要用于预防和治疗厌氧菌引起的感染,如呼吸道、消化道、皮肤软组织、骨和骨关节等部位的感染以及脆弱拟杆菌引起的心内膜炎、败血症及脑膜炎等。同时具有广谱抗原虫作用,是目前用于抗滴虫和抗阿米巴原虫的首选药物。它对皮肤软组织经寄生虫性病原侵害后的厌氧菌感染具有良好的防治效果。
氯唑西林为半合成的耐酸,耐酶青霉素。对金黄色葡萄球菌、表皮葡萄球菌、化脓性链球菌、肺炎链球菌等有较好的抗菌作用。对耐青霉素的菌株有效,尤其对耐药金黄色葡萄球菌有很强的杀菌作用,被称为“抗葡萄球菌青霉素”,常用于治疗动物的皮肤,软组织的葡萄球菌感染,以及耐青霉素葡萄球菌感染。毒性极低,不良反应发生率低。
本发明所述复方伊维菌素透皮喷剂,其配方中伊维菌素是一种具有广谱、高效、用量小和安全等优点,对动物体内外寄生虫特别是线虫和节肢动物如犬的耳痒螨、疥螨等具有良好的驱杀作用的抗寄生虫药物;甲硝唑对大多数厌氧菌具有较强杀灭作用,临床主要用于预防和治疗厌氧菌引起的感染,如皮肤软组织等部位的感染,具有广谱抗原虫、抗厌氧菌作用;氯唑西林对耐药金黄色葡萄球菌有很强的杀菌作用,被称为“抗葡萄球菌青霉素”,常用于治疗动物的皮肤,软组织的葡萄球菌感染,以及耐青霉素葡萄球菌感染;毒性极低,不良反应发生率低,是目前用于以上治疗的首选药物。氮酮又称N-月桂基氮杂环庚烷-2-酮,对亲油、亲水性药物和活性成分均有明显的透皮助渗作用,为高效透皮促进剂;甘油甲缩醛为药物溶解剂,丙二醇为助溶剂与主要油性稀释剂。
本发明所述复方伊维菌素透皮喷剂适用于多种重症病原性疾病,防治效果好,如宠物(包括犬、猫等,柯利品系犬除外)的体外寄生虫如疥螨、蠕形螨、耳痒螨等侵袭及其皮肤软组织葡萄球菌、厌氧菌继发感染或混合感染的严重型皮肤病治疗;同时稳定性好,可长期避光保存,有效期长。
优选地,由如下重量份数的组分组成:伊维菌素0.05份,甲硝唑0.15份,氯唑西林0.15份,氮酮2份,甘油甲缩醛8份,丙二醇100份。
优选地,由如下重量份数的组分组成:伊维菌素0.025份,甲硝唑0.08份,氯唑西林0.08份,氮酮2份,甘油甲缩醛8份,丙二醇100份。
本发明同时还保护所述宠物用复方伊维菌素透皮喷剂的制备方法,包括如下步骤:
S1.取配方量甘油甲缩醛和部分丙二醇混匀,加热至50~60℃;
S2.取配方量伊维菌素、甲硝唑和氯唑西林加入步骤S1制得混合物中溶解并混匀;
S3.取配方量氮酮和余下的丙二醇加入步骤S2制得混合物中混匀,使固体充分溶解;即可制备得到所述宠物用复方伊维菌素透皮喷剂。
优选地,步骤S2和S3中的温度均为50~60℃。
优选地,步骤S1中丙二醇的用量为14份;步骤S3中丙二醇的用量为86份。
优选地,制备的宠物用复方伊维菌素透皮喷剂分装入不透光喷瓶中保存。
临床使用时按压喷头均匀喷洒在宠物体表病变皮肤区域,使成薄层状均匀分布,每天使用一至两次,视病状严重程度选择高浓度型或低浓度型,以一周为一疗程。
与现有技术相比,本发明具有以下有益效果:
(1)本发明所述复方透皮喷剂的活性成分由伊维菌素、氯唑西林和甲硝唑按照特定比例组成,并添加特定的辅料,制备得到;其适用于多种重症病原性疾病,防治效果好,如宠物(包括犬、猫等,柯利品系犬除外)的体外寄生虫如疥螨、蠕形螨、耳痒螨等侵袭及其皮肤软组织葡萄球菌、厌氧菌继发感染或混合感染的严重型皮肤病治疗;
(2)同时,所述复方伊维菌素透皮喷剂稳定性好,可长期避光保存,有效期长。
(3)本发明所述复方伊维菌素透皮喷剂拓展了兽医临床上伊维菌素的剂型类型,其采用伊维菌素与抗厌氧菌药物甲硝唑及对抗耐药金黄色葡萄球菌药物氯唑西林合理配伍,制成可渗透入皮肤内进行有效治疗宠物重症型皮肤病的实用剂型,具有很好的实际价值。
附图说明
图1为实施例5中新西兰白兔皮肤急性毒性试验示意图。
具体实施方式
下面结合具体实施例对本发明做出进一步地详细阐述,所述实施例只用于解释本发明,并非用于限定本发明的范围。下述实施例中所使用的试验方法如无特殊说明,均为常规方法;所使用的材料、试剂等,如无特殊说明,为可从商业途径得到的试剂和材料。
实施例1 一种宠物用复方伊维菌素透皮喷剂
一种宠物用复方伊维菌素透皮喷剂,其配方组分为:伊维菌素0.05g,甲硝唑0.15g,氯唑西林0.15g,氮酮2mL,甘油甲缩醛8mL,丙二醇100mL。
具体的制备过程为:
S1.先量取8mL甘油甲缩醛和14mL丙二醇混匀,加热至40~60℃;
S2.精确称量0.05g伊维菌素,0.15g甲硝唑和0.15g氯唑西林,投入至步骤S1制得的预热好的22mL甘油甲缩醛与丙二醇混合液中,边投入边搅拌均匀,使其溶解;
S3.在步骤S2制得的混合液中依次加入2mL氮酮和86mL丙二醇继续搅匀,即可制备得到宠物用复方伊维菌素透皮喷剂;
其中步骤S2和S3均在50~60℃条件下混合溶解;
S4.经步骤S3制得宠物用复方伊维菌素透皮喷剂后,装入经洗净干燥的50mL塑料瓶或玻璃瓶内,临床使用时将喷头对准宠物皮肤病变皮肤区域,均匀喷洒。
实施例2 一种宠物用复方伊维菌素透皮喷剂
一种宠物用复方伊维菌素透皮喷剂,其配方组分为:伊维菌素0.025g,甲硝唑0.08g,氯唑西林0.08g,氮酮2mL,甘油甲缩醛8mL,丙二醇90mL;具体的制备过程同实施例1。
实施例3 一种宠物用复方伊维菌素透皮喷剂
一种宠物用复方伊维菌素透皮喷剂,其配方组分为:伊维菌素0.04g,甲硝唑0.12g,氯唑西林0.12g,氮酮2mL,甘油甲缩醛8mL,丙二醇100mL;具体的制备过程同实施例1。
实施例4 一种宠物用复方伊维菌素透皮喷剂
一种宠物用复方伊维菌素透皮喷剂,其配方组分为:伊维菌素0.02g,甲硝唑0.1g,氯唑西林0.1g,氮酮2mL,甘油甲缩醛8mL,丙二醇100mL;具体的制备过程同实施例1。
实施例5宠物用复方伊维菌素透皮喷剂的皮肤急性毒性试验
以实施例1(高浓度型)和实施例2(低浓度型)制备的宠物用复方伊维菌素透皮喷剂为测试对象,测试其皮肤急性毒性。
按我国食品药品管理局制定的《化学药物刺激性、过敏性和溶血性研究技术指导原则》的要求,取4只普通级新西兰种白兔,临床观察均健康,无皮肤病症状,体重在2.0kg左右。用药前先分别测量4只实验兔的基本生命体征(体温、呼吸、心率、瞳孔对光反射)是否正常。
根据《动物毒理学实验指导》中局部刺激实验,采用标准的局部全封闭斑贴法进行试验。以动物背部脊柱两侧的皮肤作为实验部位,将新白兔西兰左右侧分别标记为L侧和R侧。分别在两侧对称剃毛,每侧均匀分成三个小区,合计六个4×4cm2面积的剃毛区,总面积约为新西兰白兔体表面积的10%。在R侧的三个小区分别用手术刀片在皮肤上划井字型擦伤,划痕距离为3mm。L侧保留完整皮肤。皮肤划分情况,见图1。观察复方透皮喷剂对擦伤皮肤的毒性作用。
准备空白溶媒:甘油甲缩醛8mL,氮酮2mL,丙二醇100mL,混匀。
低浓度组测试液采用实施例2制备的透皮喷剂。
高浓度组测试液采用实施例1制备的透皮喷剂。
分别设定:A组空白溶媒对照组;B组低浓度测试液组;C组高浓度测试液组。将A组、B组、C组溶液分别喷涂在如图1所示的6个小区内,并在各区皮肤上放一块4cm*4cm大小,4~6层的灭菌纱布块。在纱布块上覆盖1至2层较大的不透气的塑料薄膜,固定。4.5~5.5小时后除去斑贴物。
用药前与除去斑贴物后,分别观察记录实验兔的基本生命体征(体温、呼吸、心率、瞳孔对光反射)是否正常;有无出现轻度震颤、运动失调、厌食的中毒症状和死亡情况。见表1。
表1各组皮肤急性毒性试验结果
从表1中可知,A组空白溶媒、B组低浓度测试液、C组高浓度测试液,用药前与除去斑贴物后,所有实验兔均表现正常。实验兔均无轻度震颤、运动失调、厌食等中毒症状;实验兔的基本生命体征(体温、呼吸、心率、瞳孔对光反射)均正常。说明,宠物用复方伊维菌素透皮喷剂没有皮肤急性毒性。
实施例6宠物用复方伊维菌素透皮喷剂的皮肤刺激性试验
以实施例1(高浓度型)和实施例2(低浓度型)制备的宠物用复方伊维菌素透皮喷剂为测试对象,测试其皮肤的刺激性。
参照实施例5中的方法进行试验,不同之处在于观察记录的时间和内容。除去斑贴物,每12小时观察一次各小区皮肤的局部反应,连续观察四天。每次观察时按皮肤刺激反应评分,见表2。
表2皮肤刺激反应评分表
注:总评分为A和B两项之和,最高分为8分。
红斑及焦痂形成通过肉眼观察,水肿形成通过轻轻触摸的方法来评分。以各次观察得分的平均数,定量地评定对局部皮肤刺激作用强度。评分结果:在2分以下者为轻微刺激,2~5分者为中等局部刺激,在6分及以上者为强刺激。评分结果,见表3。
表3皮肤刺激反应评分结果
试验结果表明,A组空白溶媒、B组低浓度测试液、C组高浓度测试液,用药前与除去斑贴物后,所有实验兔兔涂布区域皮肤均表现正常,均无明显红肿、渗出、溃烂等刺激性反应,见下表4。
表4各组的皮肤刺激性评价
从表4中可知,宠物用复方伊维菌素透皮喷剂没有皮肤刺激性。
实施例7宠物用复方伊维菌素透皮喷剂的稳定性试验
以上述实施例1(高浓度型)和实施例2(低浓度型)配方组分制得的喷剂进行实验。
为考察本发明复方透皮喷剂的稳定性,依据《中华人民共和国兽药典》2010年版一部中“兽药稳定性指导原则”(附录246页)和中华人民共和国农业部公告(第630号)《兽用化学药物稳定性研究技术指导原则》规定,进行了加速试验(30.0℃±2℃,RH65%±5%)和长期稳定性试验(25.0℃±2℃,RH60%±10%),采用高效液相色谱法(HPLC)测定制剂中伊维菌素、氯唑西林与甲硝唑含量,对其稳定性进行了评价,为其运输、保存与应用条件提供依据。
加速试验结果:复方透皮喷剂在温度在30±2℃、相对湿度60±5%条件下放置3个月,复方喷剂的高浓度型和低浓度型,其伊维菌素的含量变动分别在1.37%和1.59%范围内、甲硝唑的含量变动分别在0.49%和1.26%范围内,氯唑西林的含量变动分别在1.64%和1.96%范围内,复方喷剂的性状和外观与试验前(无明显差异),颜色无明显差异,表现稳定。
表5稳定性试验结果记录
长期试验结果:在6个月的长期试验中,复方透皮喷剂的高浓度型和低浓度型,其伊维菌素的含量变动分别在0.11%和1.62%范围内、甲硝唑的含量变动分别在0.47%和1.60%范围内,氯唑西林的含量变动分别在0.50%和1.06%范围内,复方喷剂的性状和外观与试验前无明显差异,颜色由无色变为微黄色。表明经6个月的长期试验中表现较稳定。
实施例8宠物用复方伊维菌素透皮喷剂的的临床疗效试验
以上述实施例1(高浓度型)和实施例2(低浓度型)喷剂进行实验。
在本次临床疗效试验过程中,首先由临床症状初步确定典型病例:蠕形螨病和脓皮病。
蠕形螨病病初可见患犬眼圈周围、鼻梁上部、耳朵周围的皮肤发红或有小米大小圆形红色小点,且与正常的皮肤有明显的界线和不同;也有的发生在犬的背部、颈部、腹部和大腿内侧。随着病情的发展红色小点逐渐形成丘疹(小疙瘩),并逐渐破溃,流出黄色脓汁或红色脓血,并有脱毛现象。在病理过程中,由于螨虫对皮肤的机械性刺激和其分泌毒素对皮肤的刺激,使患犬皮肤有剧痒现象出现,致使病犬常用前爪挠患部,由此可能造成皮肤出血和皮肤的严重化脓性炎症,严重时造成脓毒败血症甚至死亡。
脓皮病可分为浅表脓皮病与深层脓皮病;多是由于浅表或毛囊受到厌氧细菌感染,破坏毛囊形成疖病和蜂窝织炎。通常认为,葡萄球菌为其主要致病菌,变形杆菌、链球菌、假单胞菌、大肠杆菌、绿脓杆菌等也可致病。其临床症状一般表现为:丘疹、脓包、结痂、脱毛、红斑、色素沉着或变浅、表皮环、融合性病变呈现特殊的“虫蛀”样外观、靶向病变等。
进行实验室病原学检测,拔取病灶与健康皮肤边界的毛发,并划破破皮肤上的脓包和结痂取其内容物,分别镜检。显微镜检查是否有蠕形螨,其体长约0.1~0.4mm,躯体分足体和末体两部分,足体腹面有3~4对粗短芽突状足;显微镜检查是否显示球菌阳性。同时对皮肤破溃或脓包等患处进行采样,进行细菌的培养、纯化、镜检。确诊该皮肤病类型,是否蠕形螨病、脓皮病或是混合感染。
经确诊后,共选择12只病犬(其中蠕形螨病5例、浅表脓皮病4例、深层脓皮病8例)进行治疗。根据病犬的病变程度,分别使用复方透皮喷剂(高浓度型)与(低浓度型);每天表皮喷洒1~2次,以病变区表皮层喷洒均匀为准,以一周为一疗程进行疗效观察;分别设置成A组(低浓度型,一天一次)、B组(低浓度型,一天两次)、C组(高浓度型,一天一次)、D组(高浓度型,一天两次);对治疗效果进行评分:无效(0分)、有效(1分、2分、3分、4分)、治愈(5分);
试验结果见表4~7:在连续用药后的第7天观察:A组的治疗效果平均3.5分,B组的治疗效果平均3分,C组的治疗效果平均3分,D组的治疗效果平均3.6分;
在连续用药后的第14天观察:A组的治疗效果平均4.5分,B组的治疗效果平均4分,C组的治疗效果平均3分,D组的治疗效果平均4分;
在连续用药后的第21天观察:A组的治疗效果平均4.75分,B组治疗效果平均5分,C组的治疗效果平均4分,D组的治疗效果平均4.8分。
对复方透皮喷剂疗效的总评价中,治愈率为75%、有效率分别为100%,无效率为0%。表明对于犬蠕形螨、软组织葡萄球菌或厌氧菌感染的脓皮病,复方伊维菌素透皮喷剂的疗效明显。
表6 A组疗效观察结果
表7 B组疗效观察结果
表8 C组疗效观察结果
表9 D组疗效观察结果
复方透皮喷剂治疗对于治疗蠕形螨病、浅表脓皮病、深层脓皮病的效果,见表10。结果表明,根据推荐用量和推荐疗程用药,能有效治疗以上皮肤病。
表10复方透皮喷剂治疗确诊皮肤病的疗效结果
病症 | 病例数 | 治愈率 | 有效率 | 无效率 |
蠕形螨病 | 5 | 60%(3/5) | 100%(5/5) | 0%(0/5) |
浅表脓皮病 | 4 | 75%(3/4) | 100%(4/4) | 0%(0/4) |
深层脓皮病 | 8 | 75%(6/8) | 100%(8/8) | 0%(0/8) |
最后所应当说明的是,以上实施例仅用以说明本发明的技术方案而非对本发明保护范围的限制,对于本领域的普通技术人员来说,在上述说明及思路的基础上还可以做出其它不同形式的变化或变动,这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明权利要求的保护范围之内。
Claims (7)
1.一种宠物用复方伊维菌素透皮喷剂,其特征在于,由如下重量份数的组分组成:伊维菌素0.025~0.05份,甲硝唑0.08~0.15份,氯唑西林0.08~0.15份,氮酮2份,甘油甲缩醛8份,丙二醇100份。
2.根据权利要求1所述宠物用复方伊维菌素透皮喷剂,其特征在于,由如下重量份数的组分组成:伊维菌素0.05份,甲硝唑0.15份,氯唑西林0.15份,氮酮2份,甘油甲缩醛8份,丙二醇100份。
3.根据权利要求1所述宠物用复方伊维菌素透皮喷剂,其特征在于,由如下重量份数的组分组成:伊维菌素0.025份,甲硝唑0.08份,氯唑西林0.08份,氮酮2份,甘油甲缩醛8份,丙二醇100份。
4.权利要求1至3任一所述宠物用复方伊维菌素透皮喷剂的制备方法,其特征在于,包括如下步骤:
S1.取配方量甘油甲缩醛和部分丙二醇混匀,加热至50~60℃;
S2.取配方量伊维菌素、甲硝唑和氯唑西林加入步骤S1制得混合物中溶解并混匀;
S3.取配方量氮酮和余下的丙二醇加入步骤S2制得混合物中混匀,使固体充分溶解;即可制备得到所述宠物用复方伊维菌素透皮喷剂。
5.根据权利要求4所述宠物用复方伊维菌素透皮喷剂的制备方法,其特征在于,步骤S2和S3中的温度均为50~60℃。
6.根据权利要求4所述宠物用复方伊维菌素透皮喷剂的制备方法,其特征在于,步骤S1中丙二醇的用量为14份;步骤S3中丙二醇的用量为86份。
7.根据权利要求4所述宠物用复方伊维菌素透皮喷剂的制备方法,其特征在于,制备的宠物用复方伊维菌素透皮喷剂分装入不透光喷瓶中保存。
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