Complex sentence: Allergic reactions to ginger generally result in a rash, and although generally recognized as safe, ginger can cause heartburn, bloating, gas, belching, or nausea, particularly if taken in powdered form.
Split into simpler sentences: Allergic reactions to ginger generally result in a rash. Though generally recognized as safe, ginger can cause heartburn, bloating, gas, belching, or nausea, particularly if taken in powdered form.