Answer
Rennie Heartburn, Indigestion & Wind Relief can be used during breastfeeding: calcium and magnesium enter breast milk, but no effects on breastfed infants are anticipated at therapeutic doses, while simeticone is not absorbed from the intestine and cannot enter breast milk.
Sources for this answer
- Rennie Heartburn, Indigestion & Wind Relief 680mg/80mg/25mg Chewable TabletsBayer plc · emc · SmPC §4.6 Fertility, pregnancy and lactation · Version 2Document updated
Sources checked