Many parents and friends subconsciously feel that opening the capsule lid is more conducive to absorption. In fact, the medicines in capsules are generally powders or granules that are irritating to the mucous membrane of the oesophagus and stomach, or that are unpleasant to the palate, volatile, easily decomposed by saliva in the mouth, and easily inhaled into the airways. These medicines are encapsulated to protect the medicinal properties of the medicine from being destroyed and also to protect the digestive organs and the respiratory tract. Removing the capsule shell may result in drug loss, drug wastage and reduced efficacy. In addition, some drugs need to be dissolved and absorbed in the intestine and the capsule protects the drug from being destroyed by stomach acid. Pharmaceutically, it refers to capsules made of special film-forming materials (e.g. gelatin, cellulose, polysaccharides, etc.) into which the contents (e.g. powdered, liquid types of drugs, etc.) or by dose are packed for easy swallowing. {The above information is from Baidu Encyclopedia}

There are 5 classifications of capsules

Hard capsules, soft capsules (pellets), extended release capsules, controlled release capsules and enteric capsules.

(1)Hard Capsules (Capsules)：Capsules are filled in hollow capsules with homogeneous powder, granules, tablets, pills, semi-solids or liquids made from drugs or with suitable excipients, using suitable preparation techniques.

(2)Softgels：It refers to a certain amount of liquid raw material drug directly encapsulated, or solid raw material drug dissolved or dispersed in suitable excipients to prepare a solution, suspension, emulsion or semi-solid, sealed in a soft capsule material of the capsule. Soft capsules, also known as pills, can be prepared by the drip or press method.

(3)Extended Release Capsules：Refers to capsules that release the drug slowly and at a non-constant rate in a defined release medium.

(4)Controlled Release Capsules：Refers to capsules in which the drug is released slowly at a constant rate in a defined release medium.

(5)Enteric Capsules：means a hard capsule made by filling a capsule with granules or pellets coated with an enteric material, or a hard or soft capsule prepared from a suitable enteric material.

So you should follow your doctor's advice and not just bite open the capsule.