Lactase and Cramps: What Users Say

• Flu...
• October 11, 2020

For Lactose Intolerance "I just wish I'd read these lactase reviews before. I took a couple of tablets, over 2 days at the end of Sept and had 4 days' worth of severe vomiting and diarrhea. I didn't link the 2 at the time and figured I'd had a horrible tummy bug. Fast forward 2 weeks later, and I had a cheese fondue, so I took a tablet to avoid the bloating. Instead, here I am again with horrific vomiting, cramps, sweats, pain, and diarrhea. I was racking my brain, working out what I'd eaten or who has been sick recently in case I had caught something, then suddenly realized the only thing I'd done different was the medicine. Just Googled 'can lactaid cause vomiting,' and I got a sea of pages and people reacting the same way. I will never take or recommend this product to anyone again. I feel terrible, and I'm sad that this isn't more well-known as a side effect."

• Nan...
• Taken for less than 1 month
• April 16, 2023

Lactase for Lactose Intolerance "Two nights ago, I indulged in some ice cream and decided it would be a good idea to take 2 Lactaid pills with it. Wrong! Yesterday, I was sick as could be with multiple unpleasant bathroom visits, cramping, nausea, chills, etc. Apparently, based on the other reviews here, I was one of the luckier ones. Now, 48 hours later, I’m finally feeling like myself again. I threw away the rest of the package. Do yourself a favor and avoid these."

• Nou...
• Taken for less than 1 month
• July 4, 2015

Lactase for Lactose Intolerance "If I could give this product 0 stars, I would. I took this pill twice and felt that the product worked fine. A couple of days later, I was experiencing the worst abdominal pain and cramping I've ever had. It put me into the hospital. I'm on my 4th day of misery, and I promise I will never take this again. I would rather experience what I usually do after eating dairy. It's not worth the risk of seeing if it works for you. It's going into the trash."

• Acc...
• Taken for less than 1 month
• May 11, 2020

Lactase for Lactose Intolerance "I have taken this pill 3 separate times. Every time I have taken this, I have severe cramps and diarrhea. Horrible diarrhea! The first two times I took this, I thought it was something I ate that was bad. Now, the third time dealing with this, I know that it’s the pills. When my stomach wakes me up in the middle of the night so I can spend an hour in the bathroom, it is not fun. It usually lasts for 24 hours, but it’s embarrassing to tell my boss I can’t come in because I’m on the toilet. Never again will I take these, and I would never recommend them."

• Amy...
• May 12, 2019

For Lactose Intolerance "I would not recommend lactase to anybody! I had taken these pills a couple of times and felt fine, but the third time I have taken these, I am violently ill. I have never thrown up like this and had such bad abdominal cramping and diarrhea. I thought it was caused by the dairy I ate, although I had never thrown up from my intolerance before. But after reading several other reviews on here, I know it is the pills that caused this. I have no idea what is in these causing so many people to feel this way, but I would way rather take my symptoms of bloating and indigestion compared to the pain these pills brought me."

• Ann...
• Taken for less than 1 month
• October 19, 2018

For Lactose Intolerance "I have a pretty mild lactose intolerance usually. A big dairy meal can result in an upset stomach, cramping, and gas. I tried a lactase enzyme to hopefully relieve my minor symptoms. Upon taking the pill, my symptoms seriously escalated! I’ve tried it twice now, and both resulted in a terrible upset stomach, diarrhea, and vomiting. Googling the enzyme reveals no side effects, but after looking through these reviews, I’d recommend using it with caution!"

• Jes...
• Taken for less than 1 month
• February 28, 2023

Lactase for Lactose Intolerance "This is the first time I’ve bought this brand, and the rest of the stories sound very familiar. I took 1 pill and ate 2 slices of pepperoni pizza, and I was in the toilet with cramps all day. Then tried 3 pills. Same. With 2 slices of pizza, and nope, it did not help. I felt cramps, so much bloating, and constipation, then diarrhea. What a bad experience!! I thought this would help me, but no. Do not recommend this brand. I bought it at CVS."

• Sin...
• Taken for less than 1 month
• November 12, 2019

For Lactose Intolerance "I tried lactase inxe while pregnant and ended up vomiting profusely. I chalked it up to pregnancy woes. Just tried it again (over a year later, obviously not still pregnant). I have been vomiting so intensely that my 3-year-old is terrified. I'm experiencing abdominal cramping, sudden diarrhea, and horrible retching. FAR sicker than I would have been just eating the dairy alone."

• Ash...
• Taken for less than 1 month
• September 7, 2020

For Lactose Intolerance "I've been lactose intolerant since my early 20s. I used to take lactase back then and thought it just didn't work well for me. Then one day I took some and ended up vomiting up the ice cream I ate. I figured my intolerance was just that bad, and I've avoided dairy entirely since. Recently, I ordered dairy-free dip, and my shopper accidentally grabbed the wrong one. I eat cheese with no issues and thought, maybe I'll get some lactase and try with this, so it doesn't go to waste. I took 2, ate some dip, and felt bloated and nauseous after. I thought, maybe I just need to take more next time. Horrible mistake. It's a few days later. I took 4 and ate some dip and I've been violently ill since. Vomiting, cramping, nausea, diarrhea...I've not been this sick in years. I will never touch lactase again."