Homeopathic relief of flu symptoms, nausea, and vomiting. Helps relieve flu symptoms, nausea, and vomiting¹ Nat. Sulph. (Natrum Sulphuricum) is the cell salt indicated for relief from symptoms of the flu, including rheumatic pains, nausea, and vomiting.¹ It is particularly useful in instances where symptoms are aggravated by cold, wet weather or damp places.¹ Tablets are flavorless and dissolve immediately without water for no upset stomach.