Lab 9

What are pharmaceutical oral topical solutions primarily used for?

Local effects at the site of application rather than systemic effects.

What are common sites of topical application?

Oral cavity, nasal cavity, eyes (ophthalmic), and skin.

What are the main purposes of oral topical solutions?

Treat halitosis (bad breath), remove plaque, prevent gum disease, and protect against tooth decay.

What is the purpose of menthol in oral topical preparations?

Provides a cooling effect and freshness.

Why can alcoholic and hypertonic mouthwashes cause irritation?

They irritate the oral mucosa, especially when mouth sores are present.

What are the benefits of antibacterial and anti-caries actions?

Reduce plaque buildup, prevent gum disease, and protect against tooth decay.

Are mouthwashes, gargles, and saliva substitutes prescription products?

Most are OTC and available without a prescription.

Are oral topical solutions intended to be swallowed?

Generally no; they must be labeled accordingly and ingredients must be safe for handling.

What are the two main layers of oral tissue?

An epithelial mucous membrane (oral mucosa) and an underlying connective tissue layer.

Is the oral mucosa keratinized?

It may be keratinized or nonkeratinized.

How is the oral cavity kept moist and cleaned?

Major and minor salivary glands produce saliva and mucus; saliva mechanically removes food debris.

What sensory structures are found in the oral mucosa?

Numerous nerve endings and taste buds on the dorsal surface of the tongue.

What are the two main types of mouthwash?

Cosmetic and therapeutic mouthwash.

What is cosmetic mouthwash?

Temporarily controls bad breath and leaves a pleasant taste but has no additional chemical or biological therapeutic benefit.

What is therapeutic mouthwash?

Contains active ingredients that help control or reduce bad breath, gingivitis, plaque, and tooth decay.

Are cosmetic and therapeutic mouthwashes OTC or prescription?

• Cosmetic mouthwashes are OTC

• therapeutic mouthwashes may be OTC or prescription (Rx) and are given the brand name.

What active ingredients are commonly found in therapeutic mouthwashes?

Cetylpyridinium chloride, chlorhexidine, essential oils, fluoride, and peroxide.

How do antimicrobial mouthwash ingredients work?

They inhibit the growth and reproduction of microorganisms, helping treat oral infections and bad breath.

What is the purpose of alcohol in mouthwash?

It is commonly used as an antibacterial agent.

What must be done with concentrated mouthwash before use?

It must be diluted according to directions.

Why are sugar-free mouthwashes preferred?

To help prevent tooth decay.

What sweetening agents are used in sugar-free mouthwashes?

Artificial sweeteners and sugar alcohols

What are gargles and what are they used for?

Generally hypertonic solutions used to decrease inflammation and relieve sore throat.

What are lidocaine and nystatin used for in oral preparations?

• Lidocaine relieves local pain

• nystatin treats oral fungal infections.

Why is proper labeling essential for gargles and medicated oral solutions?

Some preparations may be swallowed while others must not; labeling must specify correct use.

Are oral and topical pharmaceutical products always sterile?

No. Oral and some topical pharmaceutical products are nonsterile.

Which patient populations generally require sterile preparations?

Neonates, premature infants, and immunodeficient patients.

What does sterile mean?

Free from viable microorganisms, including bacteria.

What microbial tests does the USP require for nonsterile oral products?

Microbial count limits and absence of specified microorganisms.

Which pathogens must be absent from oral products according to the provided notes?

E. coli, Staphylococcus aureus, and Pseudomonas.

What are common excipients in oral topical solutions?

Water, alcohol, cleansing agents, flavoring agents (usually essential oils), and coloring agents.

What is the purpose of humectants in oral topical solutions?

To retain moisture and relieve symptoms of dry mouth.

Why are sweeteners added to oral topical solutions?

To improve palatability and overall patient acceptance.

Why must aromatic oils be solubilized in oral topical solutions?

They are insoluble in water and may be supplied as solubilized oils or spirits.

What are spirits in oral topical preparations?

Alcoholic solutions of aromatic oils, such as peppermint spirit and compound orange spirit.

What happens when aromatic spirits are diluted with water or aqueous vehicles?

They tend to precipitate because aromatic oils are poorly soluble in water.

How are aromatic waters prepared?

By diluting aromatic spirits with water in the presence of a filter aid to form a saturated aqueous solution of the oil.

What is the purpose of a filter aid in aromatic water preparation?

It increases the rate of solution and adsorbs insoluble precipitates such as excess oil and terpenes.

What are examples of aromatic waters?

Peppermint, anise, menthol, and cinnamon aromatic waters.

What are aromatic waters used for?

As vehicles to dissolve water-soluble ingredients and make up the final product volume.

What are solubilized volatile oils?

Concentrated solutions of natural or synthetic volatile oils containing surfactants or solubilizers that make them water-miscible.

What was the filter aid uses in lab

Talc

Why do you avoid red color?

looks like blood