Ephedra-free is not danger-free.
D002110:Caffeine / Q000009:adverse effects; D002957:Citrus / Q000009:adverse effects; D019587:Dietary Supplements / Q000009:adverse effects* / Q000032:analysis; D029789:Ephedra; D006801:Humans; D007880:Legislation, Drug; D007881:Legislation, Food; D028321:Plant Preparations / Q000009:adverse effects; D013578:Synephrine / Q000009:adverse effects; D014481:United States; D014486:United States Food and Drug Administration
D028321:Plant Preparations; D002110:Caffeine; D013578:Synephrine