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.
This medication is usually taken twice a day with a meal for 3 days (6 doses) or as directed by your doctor. On your first day of treatment, take your first dose with food, followed by your second dose 8 hours later. Then each day for the next 2 days, take one dose in the morning and one dose in the evening. It is important to take every dose of this medication with food or milk, infant formula, pudding, porridge, or broth.