Herb Pharm Fast-Absorbing Rapid Immune Boost for Adults Echinacea Tincture with Goldenseal, Ginger Extract &; Elderberry Immune Support Supplement &; Wellness Aid, 4 Oz*

Customers find the herbal supplement effective, noting it works fast and helps prevent illness, with one mentioning it's their first line of defense during flu season. Moreover, the product receives positive feedback for its quality and ability to shorten winter colds, and customers consider it worth the price. However, the taste receives negative feedback, with customers describing it as horrific. Additionally, while some customers report feeling better within 15-20 minutes, others mention it may upset their stomach.