Why are some medicines more effective in the colloidal form?

Explanation

**Step-by-Step Solution:**

1. **Understanding Colloidal Form**:
- Colloids are mixtures where tiny particles are dispersed throughout a medium. In the case of medicines, the active ingredients are often in a colloidal state, which means they are suspended in a liquid.

2. **Large Surface Area**:
- One of the key characteristics of colloidal systems is their large surface area relative to their volume. This is due to the small size of the particles in colloids, which can range from 1 nanometer to 1 micrometer.

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