Dissolution behavior of commercial enteric-coated aspirin tablets

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery Systems

Background:

• Enteric coatings are crucial for protecting aspirin from gastric degradation.
• Variability in dissolution can impact therapeutic efficacy.

Purpose of the Study:

• To evaluate the impact of simulated gastric juice pretreatment on enteric-coated aspirin dissolution.
• To compare the dissolution performance of different commercial aspirin batches and products.

Main Methods:

• Modified USP XIX dissolution procedure with simulated gastric juice pretreatment.
• Studied five different pretreatment times (15 min and 60 min showed notable effects).
• Statistical analysis (F-test) to compare product and batch dissolution profiles.

Main Results:

• Pretreated tablets exhibited enhanced dissolution profiles and reduced undissolved fractions compared to nonpretreated tablets.
• A 60-minute pretreatment yielded the highest dissolution profiles; 15 minutes was deemed adequate.
• Product X demonstrated significantly superior dissolution compared to Product Y (p=0.05).
• Batch C was the top-performing batch, followed by Batch D; Batches A and B were comparable.

Conclusions:

• Simulated gastric juice pretreatment is beneficial for assessing enteric-coated aspirin dissolution.
• Significant differences exist in the dissolution performance between different aspirin products and batches.
• Batch C and Product X represent superior formulations in terms of dissolution behavior.