HI, thanks for using healthcare magic
Metformin can have gastrointestinal side effects and may be contributing to the acid feeling that you are experiencing.
GERD (gastroesophageal reflux- the acid sensation) can occur in other persons as well who are not using this particular medication.
It can be treated with the medication that you mentioned,
happi which is the trade name for
rabeprazole.
In addition to this medication, lifestyle changes may also have a positive effect.
This would include (1) using small meals,
(2)reducing the use of foods such as chocolate, mints, citrus foods, spicy/fried foods, tomatoes
(3)
weight loss if there is any excess weight
I hope this helps