susan Samueli caught a cold while visiting France more than three decades ago. Instead of the usual medicines, a friend suggested aconite, a homeopathic remedy derived from a plant in the buttercup family.

She was cured — and became a lifelong advocate of homeopathy and other alternative healing methods to complement conventional medicine. Her husband, Henry — the billionaire co-founder of Broadcom, the Irvine semiconductor maker — says he was initially skeptical but found the integrative health approach helped him easily shake off colds and flus and kept their children healthy without antibiotics.