Both tablets and capsules have been proven to be very reliable and easily absorbable dosage forms. The initial reason for the development of capsules was to mask the taste and smell of special pharmaceutical ingredients. Capsules are becoming popular due to the following reasons: easy to swallow, bright in appearance, colorable, odorless, and easy to fill and process. Tablets are made by directly compressing the powder of the active ingredient.
Many "inactive" ingredients, mainly sugar, starch and other fillers, are often added to tablets to obtain a more effective and stable tablet form. Some tablets are coated to help mask the smell and promote swallowing.