Podcast
Questions and Answers
What is the purpose of using a subcoating on tablets?
What is the purpose of using a subcoating on tablets?
- To improve the dissolution rate in gastric fluid
- To bond the sugar coating to the tablet and provide rounding (correct)
- To increase the shelf life of the tablet
- To enhance flavor and appearance
Which of the following materials is NOT used in enteric coatings?
Which of the following materials is NOT used in enteric coatings?
- Hydroxypropyl methylcellulose phthalate
- Cellulose acetate phthalate
- Shellac
- Gelatin (correct)
Why are tablets packaged in tight containers with desiccant packets?
Why are tablets packaged in tight containers with desiccant packets?
- To avoid spoilage from moisture (correct)
- To enhance the release of the active ingredient
- To minimize the exposure to temperature changes
- To protect against contamination from air
How do rapidly dissolving tablets differ from regular compressed immediate release tablets?
How do rapidly dissolving tablets differ from regular compressed immediate release tablets?
What is the recommended storage condition for tablets sensitive to light?
What is the recommended storage condition for tablets sensitive to light?
What is the primary use of buccal tablets?
What is the primary use of buccal tablets?
What characteristic is true of tablet triturates?
What characteristic is true of tablet triturates?
Which ingredient is commonly used as an excipient in chewable tablets?
Which ingredient is commonly used as an excipient in chewable tablets?
What is a main reason for the decline in the use of hypodermic tablets?
What is a main reason for the decline in the use of hypodermic tablets?
What is the recommended usage for chewable tablets?
What is the recommended usage for chewable tablets?
Effervescent tablets are characterized by their ability to:
Effervescent tablets are characterized by their ability to:
Which statement is true regarding dispensing tablets?
Which statement is true regarding dispensing tablets?
What is the main characteristic of chewable tablets?
What is the main characteristic of chewable tablets?
What is the primary factor that affects tablet thickness?
What is the primary factor that affects tablet thickness?
Which of the following systems is known as the fastest disintegrating tablet delivery system?
Which of the following systems is known as the fastest disintegrating tablet delivery system?
What pressure range is common for tablet presses during production?
What pressure range is common for tablet presses during production?
Which characteristic is crucial for tablet hardness that impacts disintegration and dissolution?
Which characteristic is crucial for tablet hardness that impacts disintegration and dissolution?
Which of the following factors does NOT influence tablet hardness?
Which of the following factors does NOT influence tablet hardness?
What is a common issue associated with rapidly disintegrating tablets?
What is a common issue associated with rapidly disintegrating tablets?
During quality testing, how long are extended-release tablets simulated in gastric fluid?
During quality testing, how long are extended-release tablets simulated in gastric fluid?
What is one potential disadvantage of rapidly disintegrating tablets?
What is one potential disadvantage of rapidly disintegrating tablets?
What is the primary purpose of wet granulation in the context of handling powders?
What is the primary purpose of wet granulation in the context of handling powders?
What happens if insufficient binder is used during the wet granulation process?
What happens if insufficient binder is used during the wet granulation process?
Which process is characterized by compressing powdered material directly into tablets without modifying its physical nature?
Which process is characterized by compressing powdered material directly into tablets without modifying its physical nature?
What is the recommended drying temperature for wet granules during the drying process?
What is the recommended drying temperature for wet granules during the drying process?
What type of agents are included during the mixing of active ingredients and excipients in the direct compression process?
What type of agents are included during the mixing of active ingredients and excipients in the direct compression process?
How are the dried granules processed after drying in the wet granulation method?
How are the dried granules processed after drying in the wet granulation method?
What is a potential outcome of excessive binder solution in the wet granulation process?
What is a potential outcome of excessive binder solution in the wet granulation process?
Which component is typically excluded when weighing and mixing for wet granulation?
Which component is typically excluded when weighing and mixing for wet granulation?
What is the primary purpose of immediate release tablets?
What is the primary purpose of immediate release tablets?
Rapidly disintegrating or dissolving tablets are specifically intended for which type of patients?
Rapidly disintegrating or dissolving tablets are specifically intended for which type of patients?
What technique is used in the preparation of rapidly disintegrating/dissolving tablets?
What technique is used in the preparation of rapidly disintegrating/dissolving tablets?
What is a key feature of vaginal tablets/vaginal inserts?
What is a key feature of vaginal tablets/vaginal inserts?
What is the acceptable range for content uniformity according to the USP method?
What is the acceptable range for content uniformity according to the USP method?
What is one advantage of rapidly disintegrating/dissolving tablets over traditional oral liquids?
What is one advantage of rapidly disintegrating/dissolving tablets over traditional oral liquids?
What characterizes rapidly disintegrating or dissolving tablets?
What characterizes rapidly disintegrating or dissolving tablets?
What risk is associated with tablets containing highly potent drug substances?
What risk is associated with tablets containing highly potent drug substances?
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Study Notes
Tablet Types and Characteristics
- Buccal Tablets: Designed for slow erosion; used for sublingual applications like nitroglycerin.
- Sublingual Tablets: Must dissolve quickly for rapid drug effect; tablet triturates require minimal pressure during manufacture and are soluble in water.
- Chewable Tablets: Provide smooth disintegration when chewed; typically flavored and colored with mannitol; aids administration for those with swallowing difficulties.
- Hypodermic Tablets: Used for extemporaneous preparation of injectable solutions but less common now due to the availability of sterile products.
- Effervescent Tablets: Contain granular salts that release gas when mixed with water, assisting in drug dissolution.
- Immediate Release Tablets: Disintegrate rapidly without special controls; suitable for various patients, dissolving in seconds to a minute.
- Rapidly Disintegrating Tablets: Liquefy in the mouth; convenient for those who struggle with swallowing; packaged individually for easy administration.
Preparation Techniques
- Lyophilization: Used for preparing certain rapidly disintegrating tablets.
- Direct Compression: A dry method of tablet production, compressing powders without modifying their physical characteristics.
- Wet Granulation: Involves creating a damp mass from powder mixtures; requires careful binder quantities to ensure tablet integrity.
Formulation Considerations
- Diluents: Commonly used excipients include spray-dried lactose and mannitol.
- Compression: Greater pressure increases tablet hardness, impacting dissolution and disintegration rates.
- Coating: Enteric coatings protect against gastric fluid; materials include shellac, plasticizers, and cellulose derivatives.
Quality Standards
- Weight Variation Test: Assesses uniformity by weighing tablets; average weight must meet USP criteria.
- Content Uniformity: Requires that each dosage unit's active ingredient falls within 85-115% of the label claim.
- Tablet Thickness and Hardness: Affect the tablet's performance and is measured during production; hardness testing ensures durability.
Packaging and Storage
- Tablets should be stored in low humidity, tight containers to prevent moisture exposure; desiccants may be included to reduce humidity.
- Light-sensitive drugs require protection in opaque containers; specific packaging is crucial for rapidly dissolving tablets due to their softer nature.
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