Homemade remedies including treatment with herbs, homeopathy and common household ingredients provide natural antihistamines, relieve symptoms and prevent their return. So did you work out why the Vitamin C works? It’s because Vitamin C is a an effective natural anti-histamine and anti-inflammatory; it also supports healthy immune function and protects from secondary respiratory conditions. Read on for more natural and homemade remedies….. Kiwifruit contain more vitamin C gram for gram, than oranges (especially the yellow kiwifruit variety). They also contain bioflavanoids, these are antioxidants that complement vitamin C’s effect in the body and are potent anti-histamines ...