title: Two dietary supplements contain undeclared ingredient.
mesh_terms: D019587:Dietary Supplements / Q000009:adverse effects* / Q000032:analysis; D004347:Drug Interactions; D004348:Drug Labeling; D010879:Piperazines / Q000009:adverse effects* / Q000032:analysis; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones; D014665:Vasodilator Agents / Q000009:adverse effects* / Q000032:analysis
chemical_list: D010879:Piperazines; D011687:Purines; D013450:Sulfones; D014665:Vasodilator Agents; D000068677:Sildenafil Citrate