Capsules are made up of gelatin (hard or soft) and nongelatin shells generally derived from hydrolysis of collagen (acid, alkaline, enzymatic, or thermal hydrolysis) from animal origin or cellulose based.

What is difference between tablet and caplet?

Tablets can be round, oblong, or disc-shaped. Oblong tablets are known as caplets, which can be easier to swallow. Some have a line scored across the middle, making them easier to split in half.

Are capsules made of plastic?

Capsules can be hard-shelled or soft-shelled. Traditional capsules are principally made from gelatin, which is a common ingredient in medicines and food products formed by boiling the skin and bones of cows and pigs.