Homeopathic medicines are wonderfully effective for hyperactive children (and hyperactive adults), though this doesn’t necessarily mean that a remedy will "cure" them. Sometimes, the remedy will simply slow them down and help them feel more in control on their energy.
One study of 43 children with hyperactivity found a statistically significant benefit in those given an individually chosen homeopathic medicine. After the first phase of the study, the children who were given a placebo were then given a homeopathic medicine, and there was again a statistically significant improvement in their health.

By the way, the most common remedies used in this study were Stramonium (thornapple) at 35%, Cina (wormseed) at 19%, Hyoscaymus (henbane) at 19%, Veratrum album (white hellabore), Tarentula (tarentula), and several others.
[Reference: John Lamont, "Homeopathic Treatment of Attention Deficit Hyperactivity Disorder," British Homeopathic Journal, Vol. 86, October, 1997, 196-200.]
Homeopathic medicines can elicit a deep and powerful healing that truly changes the child’s personality. It is as though the homeopathic medicine helped pull off a veil of disease that embodied the child.
Hyperactivity sometimes requires a constitutional remedy rather than an acute one. Mind you, acute remedies may provide short-term relief, but such relief is not what most children and what parents want. They want long-term improvement, though they can and will accept whatever they can get.
The course of treatment may require miasmatic remedies and other remedies based on etiology of the child’s problem (a "miasm" is the homeopathic concept of an underlying genetic and/or acquired chronic disease from which various chronic and acute symptoms manifest). A miasm can be the result of a previous infection or environmental toxin that a person or one of his/her ancestors experienced and never adequately cured.
Two colleagues, Judyth Reichenberg-Ullman, ND, and Robert Ullman, ND (no relation to me!), have written two books on the subject of hyperactivity, both of which are helpful to practitioners and parents: Ritalin Free Kids and Rage Free Kids. These books provide very useful descriptions of the leading remedies for hyperactivity and its various syndromes. I highly recommend these books.




