Illustration, not a product photo.
The enzyme that breaks down lactose, taken with dairy.
79 owner comments (35 with a clear rating) from r/IBS, r/SIBO, r/Microbiome, November 2025 to October 2026. Top 50% of the 36 rated supplements.
Value is not rated: the example products differ too much in dose to compare cost fairly. How we score.
Lactase enzyme is rated about average among the supplements we track: 3.7/5. Of 35 rated owner comments, 22 were positive, 6 mixed and 7 negative; 4 mention an unwanted effect. People talk most about stopped working and pain & cramping.
Reddit comments are self-reported and unverified. They tell you what people noticed, not whether a supplement works or is safe for you.
On a low FODMAP diet? See which supplements contain FODMAPs. There is a separate ranking of what people with abdominal pain and cramping rate highest. Reddit owners also rank supplements by loose stools reports.
Supplements can interact with medicines. Talk to a doctor or pharmacist first, especially if you are pregnant, take prescription medicine, or have red-flag symptoms. See supplement safety and interactions.
| Context | Rated owner comments | Positive | Negative | Unwanted effects |
|---|---|---|---|---|
| IBS-D & loose stools | 9 | 6 | 0 | 1 |
| Pain & cramping | 8 | 3 | 0 | 2 |
| Bloating & gas | 4 | 4 | 0 | 0 |
| SIBO | 4 | 1 | 2 | 1 |
4/5 Bloating & gasCost“I didn't think I was lactose intolerant but tried lactase tablets after 40 years if IBS-C.”
4/5“Try taking a Lactaid supplement? I'm lactose intolerant and that works for me.”
4/5“I'm lactose intolerant and take a Lactaid supplement with the first bite or sip of any dairy and it works for me.”
2/5“Thanks for the suggestion, unfortunately I've tried consuming dairy with lactase pills and it doesn't help”
2/5 Side effectsStopped working“I have lactose intolerance too and take a Lactaid supplement with the first bite or sip of any dairy.”
3/5 Pain & crampingStopped working“Try taking a Lactaid supplement with the first bite or sip of any dairy.”
3/5 Pain & crampingStopped working“Try taking a Lactaid supplement with the first bite or sip of any dairy.”
3/5“You can get lactase pills for the lactose, fructaid pills for the fructose/fructans, specific enzymes in a combo for lipase (fat) , protease (protein), cellulase (plant fibre) and Amylase (carbs), various ither things.”
3/5 Pain & crampingStopped working“Try taking a Lactaid supplement with the first bite or sip of any dairy.”
4/5 Stopped working“If you haven't been tested for lactose intolerance, I suggest you buy some lactase and take one every time you eat lactose, or just stop eating lactose.”
5/5“I tried lactase pills a couple times and they helped a little but I'd still feel off after, so I just gave up and cut everything.”
2/5 CostRegularity“Lactose free milk products are the same as their regular counterparts; they just have lactase enzymes added to them.”
4/5“i would start with probiotics , also you can get lactase tablets to help you digest dairy better .”
2/5“lactase doesn't work for me either :( if you happen to have a membership I like costcos 2% lf milk or if not fairlife/horizon & if non dairy products happen to give you issues as well it may be a sensitivity to fats/oil content like…”
4/5“When I first got diagnosed, I got a blood test and it showed that I’m intolerant to both lactose and casein (the protein in milk) so the lactaid pills weren’t rlly able to help much.”
4/5“Heavy on the lactase enzyme suggestion. I started working with DairyPill a few years back, and my boyfriend has taken them for similar symptoms as OP. They work great for him!”
4/5“Also I am lactose intolerant and take a Lactaid supplement with the first bite or sip of any dairy and it works for me.”
4/5 Urgency & loose stools“I am lactose intolerant and so I take a Lactaid supplement with the first bite or sip of dairy and it works for me.”
4/5“I can just take lactase for what little lactose seems to be in butter.”
4/5“I ate a slice of pizza and took 4 extra strength lactaid pills afterwards but I don't remember if it helped or not”
4/5 Pain & crampingSide effects“For years I have taken a Lactaid supplement with the first bite or sip of any dairy and it works for me.”
2/5 Stopped working“I've tried few lactase enzymes and it's not helping me.”
4/5 Pain & crampingStopped working“Taking a Lactaid supplement with the first bite or sip of any dairy helps me avoid cramps and urgent diarrhea.”
4/5“Taking a Lactaid supplement with the first bite or sip of any dairy works for me.”
4/5“And unless I take a Lactaid supplement, dairy because I am lactose intolerant.”
2/5“No dairy is lactose free, all they did was just add lactase to it.”
4/5“I know this as I had the blood test and it was negative, but cheese and milk made me expand to the point of explosion, so I decided to try some lactase enzymes and it really helped!”
3/5 Pain & cramping“Report also noted a complete deficiency of lactase and lower 15th percentile production of other brush border intestinal enzymes: sucrase, maltase, palatinase.”
These are examples of Lactase enzyme products sold on Amazon. They are not ranked by Reddit and the score above is for the ingredient, not a specific product. Check the label for dose and other ingredients.
Published studies (we list them so you can read the evidence yourself; inclusion is not an endorsement):
Across 79 Reddit comments from people who say they have used it, 22 of 35 rated comments were positive and 7 negative, for a GutVerdict score of 3.7/5. These are self-reported experiences, not clinical evidence.
4 of 35 rated owner comments (11%) describe an unwanted effect such as gas, bloating or an upset stomach. Check the safety notes on this page and ask a doctor or pharmacist before starting.
Most rated owner comments come from people with IBS-D or loose stools (9 comments, 6 positive).
No. The score summarizes Reddit owner comments only. Factual statements on this page link to NIH or PubMed sources, and nothing here is medical advice.
“I began to take 1 capsule before each meal together with digestive enzymes and my symptoms lessened by about 70-80% in a few weeks.”
What owners report →
“I definitely love my beanzyme. Works great for beans and onions for me.”
What owners report →
“Neither psyllium nor anything else should be a sole source of fiber for anyone.”
What owners report →Last updated 2026-11-03. Mentions scanned: 240 in 176 threads.