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Questions and Answers
Which of the following is a type of liquid dosage form?
Which of the following is a type of liquid dosage form?
What is a solution?
What is a solution?
A homogeneous one-phase system consisting of two or more components.
Syrup BP contains more water than sucrose.
Syrup BP contains more water than sucrose.
False
Which type of solution contains aromatic materials dissolved in alcohol?
Which type of solution contains aromatic materials dissolved in alcohol?
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A _____ is a solution prepared by extracting active constituents from crude drugs.
A _____ is a solution prepared by extracting active constituents from crude drugs.
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Match the following types of solutions with their definitions:
Match the following types of solutions with their definitions:
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What are solid dispersions used for?
What are solid dispersions used for?
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Study Notes
Pharmaceutical Dosage Forms I
- This course will cover pharmaceutical solutions, coarse dispersions, suspensions, colloids, and emulsions.
- The course includes 12 lectures (2 hours weekly).
- The course grade is based on: periodical quizzes (15%), oral examinations (10%), practical examinations (25%), and final-term examinations (50%).
Dosage Form Classification
- Dosage forms can be divided into liquid, semisolid, and solid forms.
- Liquid dosage forms include solutions, suspensions, and emulsions.
- Semisolid dosage forms include ointments, creams, pastes, and gels.
- Solid dosage forms include tablets, capsules, suppositories, pessaries, and sterile dosage forms like injections and ophthalmics.
Solutions
- Definition: A homogeneous one-phase system consisting of two or more components.
- Solvent: The phase in which dispersion occurs (usually present in greater amounts).
- Solute: The component being dispersed (can be liquid or solid).
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Examples:
- Gas dissolved in gas: dry air (oxygen dissolved in nitrogen)
- Gas dissolved in liquid: carbonated water (carbon dioxide dissolved in water)
- Gas dissolved in solid: floating soap (air dissolved in soap)
- Liquid dissolved in gas: moist air (water dissolved in air)
- Liquid dissolved in liquid: vinegar (acetic acid dissolved in water)
- Liquid dissolved in solid: amalgam (mercury dissolved in silver)
- Solid dissolved in gas: mothballs in air (mothball dissolved in air)
- Solid dissolved in liquid: sweet tea (sugar dissolved in tea)
- Solid dissolved in solid: bronze (tin dissolved in copper)
- Solid dissolved in solid: 12 karat gold (copper dissolved in gold)
Introduction to Solutions
- An understanding of solutions, solubility, and dissolution is crucial in pharmaceutical formulation.
- Syrups: Aqueous solutions containing sugar.
- Elixirs: Sweetened hydroalcoholic (water and ethanol) solutions.
- Aromatic Waters: Aromatic materials dissolved in water.
- Spirits: Aromatic materials dissolved in alcohol.
- Tinctures or Fluidextracts: Solutions prepared by extracting active constituents from crude drugs. Tinctures can also be solutions of chemical substances dissolved in alcohol or a hydroalcoholic solvent.
Classification of Solutions
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Solutions for Internal Use:
- Oral solutions, syrups, elixirs, spirits, and tinctures are used for systemic effects.
- Solutions are typically absorbed more quickly than suspensions or solid dosage forms.
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Description
Test your knowledge on the basics of pharmaceutical dosage forms, including solutions, emulsions, and dispersions. This quiz will cover various types of dosage forms and their classifications, as well as key definitions and examples. Ideal for students in pharmaceutical studies.
