Untitled Presentation

Multiple Choice

What is the significance of Gastroretentive Drug Delivery Systems (GRDDS) in improving therapeutic outcomes?

• They increase drug solubility in the bloodstream

• They prolong the residence time of drugs in the stomach

• They reduce the need for oral medications

• They eliminate side effects completely

Open Ended

How do GRDDS contribute to the effectiveness of drug therapy in the gastrointestinal tract?

Multiple Choice

Which of the following is a key advantage of the Floating Drug Delivery System (FDDS) as described in the image?

• It increases gastric residence time and reduces plasma drug concentration fluctuations.

• It allows for immediate drug release in the stomach.

• It is only suitable for drugs with high density.

• It was introduced by Davis in 1980.

Multiple Choice

Based on the images, what are the main dosage forms available for FDDS?

• Tablet, Capsule, Microsphere, Granule, Film

• Tablet, Syrup, Injection, Capsule, Film

• Tablet, Capsule, Ointment, Microsphere, Film

• Tablet, Capsule, Granule, Cream, Film

Open Ended

Explain how hydrocolloid and inert fat ingredients contribute to the floating ability of FDDS formulations.

Multiple Select

Which of the following ingredients can be used to increase the release rate in FDDS formulations?

• Laktosa, manitol

• Beeswax, asam lemak

• NaHCO3, asam sitrat, asam tartrat

• Metil selulosa

Open Ended

Describe the role of gelatin barrier in the controlled release of drugs in the Barrier Gel Koloid system.

Open Ended

Explain how the Koloid Gel Barrier System prolongs gastric retention time (GRT) and maximizes drug absorption.

Multiple Choice

Which of the following polymers is used to form the gel matrix in the Koloid Gel Barrier System?

• Hydroxypropyl cellulose

• Polystyrene

• Agar

• Alginate

Multiple Choice

What is the main function of the microporous wall in the Microporous Compartment System?

• To allow drug release through pores

• To prevent drug contact with stomach surface

• To encapsulate the drug reservoir

• To trap air for flotation

Multiple Select

Select all statements that correctly describe the floating mechanism of the Microporous Compartment System.

• The floatation chamber traps air causing the system to float.

• Drug reservoir releases drug directly into the stomach.

• Gastric fluid enters through pores to dissolve the drug.

• The system sinks to the bottom of the stomach.

Multiple Choice

Which of the following substances is used as the effervescent agent in gas generating systems?

• Metilselulosa

• NaHCO3

• Kitosan

• Polisakarida

Open Ended

Explain the mechanism by which effervescent systems help in the controlled release of drugs in the stomach.

Multiple Select

Which of the following are layers found in an effervescent pill system?

• Semi-permeable membrane

• Effervescent layer

• Core pill layer

• Hydrogel coating

Multiple Choice

What is the main advantage of diltiazem floating tablets compared to regular tablets for hypertensive patients?

• Lower cost

• Faster absorption

• More effective

• Fewer side effects

Multiple Choice

Which application of gastroretentive systems is related to the treatment of stomach and duodenum cancer?

• 5-Fluorouracil

• Tacrine HBS

• Madopar HBS

• Cytotech

Multiple Choice

Which of the following marketed products of GRDDS uses Diazepam as the drug?

• Valrelease®

• Madopar® HBS (Prolopa® HBS)

• Liquid Gaviscon®

• Topalkan®

Multiple Select

Which of the following are delivery systems used in marketed products of GRDDS?

• Floating capsule

• Colloidal gel forming FDDS

• Bilayer floating capsule

• Gas-generating floating form

Open Ended

Explain the importance of evaluating both physical and physiological parameters in the assessment of Floating Drug Delivery Systems.

Open Ended

Describe the procedure for visually testing the floating ability of a tablet in an acidic medium.

Multiple Choice

What change is observed in the floating behavior of propanolol HCl tablets between hour 0 and hour 3?

• Tablets remain at the bottom at hour 0 and float at hour 3

• Tablets dissolve completely by hour 3

• Tablets float at hour 0 and sink at hour 3

• No change in floating behavior

Open Ended

Reflecting on the objectives of GRDDS, how do you think improving drug retention and absorption in the gastrointestinal tract can impact patient outcomes?

Multiple Choice

What are some therapeutic advantages of controlled release preparations as mentioned in the introduction to Gastroretentive DDS (GRDDS)?

• They are easy to administer, improve patient compliance, and offer formulation flexibility.

• They are difficult to administer and reduce patient compliance.

• They only provide local effects and no systemic benefits.

• They do not affect the duration of drug release.