Peppermint and ginger are both things that help settle an upset stomach. I would suggest looking into a quality loose tisane (or even making your own) with one or both of these two things because the teabags you buy in the store are either going to be flavored, old or just bad quality.
OID - Medication once a day [Internet]; August 7, 2016 [cited 2016 AUG 7]. Available from: https://www.allacronyms.com/OID/Medication_once_a_day. 'OID - Medication once a day', All Acronyms, 7 August 2016, <https://www.allacronyms.com/OID/Medication_once_a_day> [accessed 7 August 2016] All Acronyms, OID - Medication once a day (Aug. 7, 2016, 4:08 PM), available at https://www.allacronyms.com/OID/Medication_once_a_day.
Usage: Take this medication by mouth, usually once daily or as directed. Follow all directions on the product package, or take as directed by your doctor. Do not take more than the recommended dosage. If you are uncertain about any of the information, consult your doctor or pharmacist.Take this medication regularly in order to get the most benefit from it. To help you remember, take it at the same time..