To treat a common cold, a doctor has a few well know options he can choose from. Choosing the right drug here is routine for him. But a lot of situations are more complex. To treat the patient, he may have to combine different drugs. Combining them could be dangerous though, he has then to anticipate how they are going to interact. Furthermore, the patient may have special traits. The doctor has to consider their impact : pregnancy, allergy, age, condition.
Choosing a treatment involves a deep understanding of the connections between drugs and patients. Making a good decision here is literally a matter of life and death. Thankfully, graph technologies can help. They make it easy to analyse the connections in complex datasets to provide clear answers. Graph search, the same logic used by Facebook to tell you which of the friends of your friends can recommend you a great Sushi place in Paris, can be used to provide accurate drug prescription.