The **effects of medications** on driving can vary according to several personal factors of the driver. These include:

- **Driver's age**: Age can influence how the body processes medications, affecting their efficacy and side effects.

- **Consumption habits**: The consumption of other substances, such as alcohol or drugs, can interact with medications and alter their effects. For example, the use of drugs like cannabis or cocaine can affect concentration, reaction time, and environmental perception, which is dangerous when driving.

- **Physical condition**: General health and the presence of chronic illnesses can modify how a medication affects the driver. It is important to be well-informed about the illness and the effects of medications, and to consult with health professionals about the safety of driving under medication.

Therefore, the correct answer is that the effects of medications can vary according to the **driver's age, consumption habits, and physical condition**.