Herbal Supplement. Rainbow Light® ~ Herbal Prescriptives. Calms & Balances. Fast-Acting. Includes California Poppy & Valerian. Herbal IQ™ Guarantee. Supports Natural Calm & Balance Fast-acting herbal blend, featuring California poppy and valerian, traditionally used to promote relaxed calm and provide support for managing stress.*. Herbal IQ™ Guarantee Our comprehensive Herbal IQ Guarantee program ensures thorough review by qualified herbalists of selected herbs and co.