The White -pills used by Homoeopaths are known as milk of sugar and basically these are lactose powder and since these pills offer sweetness to the consumers, there is no chance of any denial of the patients in consuming such medicines.
These white - pills work as magic pills since these contain basic medicines being administered by the Homoeopath of the requisite potency to cure the ailments from which a patient is suffering from. The trick lies in administration of an appropriate potency of a selected medicine such as Nux -200, Sepia 1M, Pulsatila 30 and so on. So these pills are the carrier of medicines which an Homoeopath thinks fit for a particular disease.
In fact, the original form of the medicine known as Mother - tincture and also referred to Q, is the crude form of the plant medicine having a charecterestic state - often bitter in taste. Now the mother tincture is diluted with the addition of appropriate amount of alcohol and later on, medicines of different potencies are prepared such as 30c, 200c, 1000c, 10M, CM and so on.
The Homoeopath would closely watch the symptoms of the patient including his behaviour and would prescribe the medicine. The selection of sugar of pills becomes more relevant to offer the patient a medicine of the desired potency to cure the patient from the disease but at the same time it should not be distatestful.