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Lactulose and Vomiting: What Users Say

Brand names: Enulose, Kristalose Generlac Constilac Cholac

Vomiting: mentioned by 3 users (2.0%)

Based on user experiences from 153 Lactulose reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

gas 26.1%
bloating 11.8%
cramps 11.1%
diarrhea 7.8%
nausea 7.8%
pain 7.8%
constipation 5.9%
upset stomach 2.0%
vomiting 2.0%
water retention 2.0%

Reviews for Lactulose

Commonly mentioned side effects
  • Ema...
  • Taken for less than 1 month
  • March 13, 2019

For Constipation, Chronic "I had surgery on my stomach and was severely constipated after. It was agony to go. I was prescribed lactulose, but it’s far too sweet and syrupy. I gagged every time I tried to take it, even when I mixed it with other liquids. Even the thought of taking it made me gag, and it didn’t help at all when I needed to use the bathroom. I used it for about a week and still couldn’t go without being in agony. I switched to Dulcoease capsules, and they worked the same day!"

1 / 10
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23 Report
  • Emm...
  • Taken for 2 to 5 years
  • August 12, 2018

For Constipation, Chronic "I have been using lactulose for chronic constipation for three years. It is very effective. I now find that the sweet taste is making me gag and/or vomit. There are times when just looking at the bottle invokes the nausea. I have mixed in other liquid so I can't taste it, however, I can't take it anymore. Any wise ideas?"

10 / 10
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22 Report
  • Joh...
  • Taken for less than 1 month
  • December 27, 2022

For Constipation, Chronic "Suddenly, over Christmas, I just couldn’t go, so I drank loads of water and waited a few days, but still nothing. My GF went to the pharmacy and brought back a huge bottle of lactulose. I took 15 ml cautiously and then another 15 ml 20 minutes later. Nothing much happened apart from gas until 6 pm, when I got cramps, but that was from more gas. After 6 pm, I took a further 20 ml and still had painful wind. I managed to pass a few tiny nuggets and then had to sleep on my side so I could pass wind all night. The next day, I still had similar pains. I drank a glass or two of water and had a banana for breakfast and decided to have another 30 ml in one go this time. I lay in bed sipping water and all of a sudden felt cold and feverish. Cold sweat ran down my face as I felt sick and had to run to the bathroom and vomit my guts up. My body didn’t seem to like the 30 ml I’d had. 30 minutes later, the biggest, stinkiest log was ejected from my soul, finally saved at last."

10 / 10
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3 Report

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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.