Solgar Quercetin Complex with Ester-C Plus, 100 Vegetable Capsules – Supports Immune Health, Antioxidant – Gentle on the Stomach Vitamin C – Non-GMO, Vegan, Gluten/Dairy Free – 50 Servings

Customers find this supplement effective for allergy relief and immune support, with one noting it works as a natural antihistamine. The product receives positive feedback for its great combination of ingredients, including vitamin C and ester C, and customers appreciate its ease of swallowing. While some customers report immediate stomach relief, others experience stomach discomfort.