The first few weeks it wasn’t that bad at all, It took time to adjust to not eating so fast (but with so much excitement it was hard) so I only became nauseous when I ate fast or over did it but I learned quickly and had no issues, I wasn’t even taking the medication for acid/nausea. Now that I’m a little past the 2 months and introducing more new foods I do get the GERD, but I’m hoping it’s just temporary and apart of transition- I’ve noticed it usually happens when I take in any vegetables (specifically broccoli, which was my fav). Aside from all the vitamins, it’s the only medication I’m taking right now- it is as needed, but I take one before I have my “biggest” meal which tends to be lunch. If I don’t take it then I end up with the heartburn, nausea, etc. and will take one and it immediately helps. I have noticed getting up to walk around in between bites helps a lot.