A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel absorbs moisture.

Silica gel is a desiccant, which means it has the ability to absorb and hold moisture from its surroundings. It is made from silicon dioxide and has a high surface area, allowing it to adsorb water molecules effectively. The silica gel used in medicine packaging is typically in the form of small beads or granules.

The presence of moisture can be detrimental to certain medications as it can lead to degradation, clumping, or loss of potency. Moisture can also promote the growth of bacteria, mold, or fungi, which can compromise the safety and effectiveness of the medication.

By placing a silica gel pouch inside the medicine bottle, any moisture present in the packaging or air can be absorbed, helping to maintain the integrity and stability of the medication. This helps to extend the shelf life of the medicine and preserve its quality.

It is important to note that silica gel does not kill bacteria, germs, or spores directly. Its primary function is to absorb moisture and prevent the negative effects associated with moisture exposure in medicine packaging.