Every individual child has his nature which will be similar throughout his life. A child may be formed, but he can be formed or can form himself only according to his nature, which is almost homoeostatic. This homoeostatic state can be called the constitution. The constitution is "what is" and the temperament is "what becomes". The temperament of a child may change over time, and be affected by many external factors, such as the physical and emotional environment in which the child is raised, the illnesses to which they are exposed, vaccinations, drugs used, and so on.
Next to the destruction of Mother Earth and her environment, the biggest insanity happening in the world today may be the way we are drugging our children into submission to a system that never worked very well anyway, and is tragically inadequate to their needs.

Let's look at vaccination for example and what effects it can have on our children's brains.
According to Dr. Russell Blaylock, a board-certified neurosurgeon, it seems the brain is always neglected when pharmacologists consider side effects of various drugs. The same is true for vaccinations. For a long time no one considered the effect of repeated vaccinations on the brain. This was based on a mistaken conclusion that the brain was protected from immune activation by its special protective gateway called the blood-brain barrier. More recent studies have shown that immune cells can enter the brain directly, and more importantly, the brain’s own special immune system can be activated by vaccination.
You see, the brain has a special immune system that operates through a unique type of cell called a microglia. These tiny cells are scattered throughout the brain, lying dormant waiting to be activated. In fact, they are activated by many stimuli and are quite easy to activate. For our discussion, activation of the body’s immune system by vaccination is a most important stimuli for activation of brain microglia. Numerous studies have shown that when the body’s immune system is activated, the brain’s immune cells are likewise activated. This occurs by several pathways, not important to this discussion. The more powerfully the body’s immune system is stimulated the more intense is the brain’s reaction. Prolonged activation of the body’s immune system likewise produces prolonged activation of the brain’s immune system - Therein lies the danger of our present vaccine policy.

A considerable number of studies have shown conclusively that such a practice can lead to severe injury to the brain by numerous mechanisms. Because the child’s brain is undergoing a period of rapid growth from the third trimester of pregnancy until age 2 years, his or her brain is at considerable risk from this insane policy. We have also seen that live-virus vaccines and contaminated vaccines hold a special risk in that the viruses tend to persist in a substantial number of individuals and that free radicals can cause the latent viruses to transform by genetic mutation into disease-causing organisms later in life.

An alternative to vaccination, Ritalin or any other conventional drug which may cause serious damage to your child's health and well-being could be HOMOEOPATHY:
Homeopathy is safe, natural, and lacks the side effects of conventional medicine. Homeopathic medicines never suppress a child’s normal growth and development. In fact, many children experience a growth spurt after beginning homeopathic treatment. Nor does homeopathy cause such side effects as anxiety, appetite suppression, insomnia, or tics, or have a rebound effect. One dose of the correct homeopathic medicine often lasts four to six months or longer. Homeopathic medicines are very inexpensive compared with other conventional drugs. The only significant cost of homeopathic treatment is office visits. Once your child has responded well to homeopathy, appointments are infrequent.
Homeopathic immunisation is also available and can prevent serious brain damage and/or other illnesses like allergies, asthma, autism linked to some of the given vaccines.
Homeopathy is a respectful therapy that moves beyond the labeling of a behavior "problem", it is treating the whole person rather than a symptom, and catering to the individuality of your child.