The mass for making suppositories may be mixed on a board with the spatula or in a mortar with the pestle. Oil of theobroma can also be melted and medicaments added to form a mixture that is stirred until it congeals or barely fluid enough to pour into molds. Rectal suppositories are usually about one inch long, three-eighths of an inch in diameter at the base, and bluntly pointed. Suppositories should come in contact only with board and spatula; lycopodium dust can prevent sticking. Molds for suppositories can be used cold or hot, but cold is better to avoid ingredient separation. Solid preparations not made by extraction include pills, powders, and troches. Questions on these methods are provided at the end of the chapter.
<Callout type="important" title="Critical Preparation Steps">Ensure that all ingredients for suppositories mix thoroughly before pouring into molds to prevent separation during cooling.</Callout>
Water-solutions of inorganic chemical compounds, mucilages, syrups, and emulsions are discussed. Mucilage is made by dissolving acacia or tragacanth with water and glycerin. Syrups contain medicinal substances sweetened with sugar. Emulsions are liquid mixtures containing insoluble substances suspended uniformly throughout the liquid.
<Callout type="gear" title="Essential Equipment">For making suppositories, ensure you have molds, spatulas, lycopodium powder, and a porcelain dish for melting oil of theobroma.</Callout>
Glycerites are solutions in glycerin. Emulsions include seed emulsions (like almond), gum-resin emulsions, fixed oils, volatile oils, and oleoresins.
<Callout type="beginner" title="Understanding Ingredients">Beginners should familiarize themselves with the properties of ingredients like acacia, tragacanth, and oil of theobroma to understand their roles in preparation.</Callout>
Key Takeaways
- Suppositories can be made by hand or using molds, with oil of theobroma as a base.
- Mucilage is made from acacia and tragacanth mixed with water and glycerin.
- Syrups are medicinal solutions sweetened with sugar.
- Emulsions contain insoluble substances suspended uniformly throughout liquid.
Practical Tips
- Use lycopodium powder to prevent suppository mass from sticking to the board or spatula.
- Ensure all ingredients mix thoroughly before pouring into molds for suppositories.
- Keep mucilage in small quantities and consume within a few days to avoid fermentation.
Warnings & Risks
- Avoid touching suppository mass with fingers as it can become smeary and unworkable.
- Mucilages are prone to fermentation if not consumed quickly after preparation.
- Ensure proper mixing of volatile oils and acacia for emulsions to prevent separation.
Modern Application
While the specific pharmaceutical techniques described here may be outdated, understanding these methods can provide valuable insights into emergency medical supplies. Modern equivalents like pre-made suppositories and standardized medications offer similar benefits but with improved safety and efficacy.
Frequently Asked Questions
Q: What is the best way to prevent separation of ingredients in suppository molds?
To prevent separation, ensure that all ingredients mix thoroughly before pouring into molds. Using cold molds can also help maintain uniformity during cooling.
Q: How do you make a simple syrup according to this chapter?
A simple syrup is made by dissolving 850 grams of coarsely powdered sugar in enough water to make the finished solution measure 1000 cubic centimeters. The mixture can be heated and strained or percolated through an ordinary percolator.
Q: What are some common ingredients used in making emulsions?
Common ingredients for emulsions include fixed oils, volatile oils, oleoresins, resins, gum-resins, and inorganic powders. Acacia is often used as an effective emulsifying agent.