Lmiquimod cream and preparation method thereof

An imiquimod and cream technology, which is applied in the field of imiquimod cream preparation and preparation, can solve problems such as toxic and side effects, influence on patient medication, skin surface redness and swelling, and achieves less toxic and side effects and safe clinical use. Effective, cost-reducing effect of pharmaceuticals

Inactive Publication Date: 2006-11-22
湖北科益药业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main drug imiquimod itself has a certain stimulating effect on the skin. Adding a transdermal enhancer to the cream will cause adverse reactions such as redness and swelling on the skin surface. Affect patient medication

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Imiquimod 50g

[0017] Stearic acid 70g

[0018] Cetyl Alcohol 15g

[0019] Octadecanol 15g

[0020] White Vaseline 55g

[0021] Liquid paraffin 55g

[0022] Xanthan gum 5g

[0023] Benzyl alcohol 20g

[0024] Glycerin 40g

[0025] Propylparaben 2g

[0026] Methylparaben 0.2g

[0027] Tween-60 60g

[0028] Span-60 15g

[0029] Distilled water up to 1000g

[0030] The imiquimod is micronized for use (the particle size is controlled below 80 μm). Take cetyl alcohol, stearyl alcohol, stearic acid, white petrolatum, and liquid paraffin and heat and melt to form an oil phase, add Span 60, xanthan gum, benzyl alcohol, and propylparaben to the oil phase, and keep warm until (75~ 85°C). In addition, heat glycerin and distilled water to 75-85°C, then add Tween-60 and methylparaben to dissolve into water phase. Add the main drug imiquimod into the oil phase, stir evenl...

Embodiment 2

[0032] Imiquimod 50g

[0033] Stearic acid 70g

[0034] Cetyl Alcohol 15g

[0035] Octadecanol 15g

[0036] White Vaseline 55g

[0037] Liquid paraffin 55g

[0038] Carbomer 5g

[0039] Benzyl alcohol 20g

[0040] Propylene glycol 40g

[0041] Chlorobutanol 5g

[0042] Methylparaben 0.2g

[0043] Sodium Lauryl Sulfate 10

[0044] Distilled water up to 1000g

[0045]The imiquimod is micronized for use (the particle size is controlled below 80 μm). Take cetyl alcohol, stearyl alcohol, stearic acid, white petrolatum, and liquid paraffin and heat and melt to form an oil phase, add benzyl alcohol into the oil phase, and keep warm to (75-85°C). In addition, heat propylene glycol and distilled water to 75-85°C, then add sodium lauryl sulfate, chlorobutanol and carbomer solution after swelling to the water phase. Add the main drug imiquimod into the water phase, stir evenly, then pou...

Embodiment 3

[0047] Imiquimod 90g

[0048] Stearic acid 200g

[0049] Triethanolamine 10

[0050] Cetyl Alcohol 15g

[0051] Octadecanol 15g

[0052] White Vaseline 55g

[0053] Liquid paraffin 55g

[0054] Sodium Carboxymethyl Cellulose 5g

[0055] Benzyl alcohol 30g

[0056] Glycerin 40g

[0057] Distilled water up to 1000g

[0058] The imiquimod is micronized for use (the particle size is controlled below 80 μm). Take cetyl alcohol, stearyl alcohol, stearic acid, white petrolatum, and liquid paraffin and heat and melt to form an oil phase, add benzyl alcohol into the oil phase, and keep warm to (75-85°C). In addition, glycerin and distilled water are heated to 75-85° C., and then triethanolamine and swollen sodium carboxymethyl cellulose solution are added to the above water phase. Add the main drug imiquimod into the oil phase, stir evenly, then pour the water phase into the oil phase, stir while add...

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Abstract

The present invention relates to imiquimod cream containing imiquimod of grain size not greater than 100 micron in 1.0-10.0 wt%, oil phase, water and emulsifier. The preparation process of imiquimod cream includes the following steps: heating at 75-85 deg.c to smelt oil phase with added thickener and anodyne; mixing humectant and water to obtain water phase and heating to 75-85 deg.c; mixing imiquimod, emulsifier, preservative, oil phase and water phase via maintaining the temperature and stirring for 15-20 min; and regulating pH value to 4.0-7.0 to obtain the imiquimod cream. The medicine of the present invention has raised permeating absorption and raised curative effect, and is used in treating condyloma acuminatum around male's and female's external genitalia and anus.

Description

technical field [0001] The invention belongs to a medicine of an immune response regulator, and in particular relates to an imiquimod cream preparation and a preparation method. Background technique [0002] Warts are one of the diseases caused by human papillomavirus (HPV) infection of the skin and mucous membranes. Among them, genital warts are the most common sexually transmitted diseases worldwide. According to the report of the Centers for Disease Control and Prevention (CDC), 5-20% of people aged 15-49 are infected with this disease, and there are 750,000 new patients every year. Once suffering from this disease, patients not only suffer physically, but also often have a sense of shame and guilt mentally. [0003] Current treatments for external genital and perianal warts include chemotherapy and physical excision. Podophyllotoxin and interferon are drugs that have been approved to treat genital warts so far. Podophyllotoxin is the only drug that uses self-treatment....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K9/06A61K9/107A61K31/437A61K47/06A61K47/30A61P15/00A61P15/02A61P17/00
Inventor 刘红章雁史自东周一平甘斌
Owner 湖北科益药业股份有限公司
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