Lactaid products work for me. I was born lactose intolerant. My mother said I couldn't tolerate breast milk. They tried me on cow milk and then goat milk. My childhood was filled with nausea, vomiting and diarrhea. I avoided milk products for years. Lactaid is the only product that works for me. Fermented milk products and Lactaid is the way to go.

Please add nausea as a side effect, took some around 3-4 hours ago and now I'm feeling dizzy with the envy to vomit. I wouldn't want to be biased and be affected by other reviews but I feel like voicing my concerns is important in this case. Thank you !

I took Lactaid fast act a couple of times without incident. Then, on the 3rd day, I started to get extremely shaky and nervous. By the end of the day, I had the most severe headache I've ever had. It felt like I had a really bad fever, though my thermometer showed normal body temperature. Then, the pain spread around. The entirety of my gums began throbbing and the pain spread to my teeth and jaw which made it virtually impossible to move my mouth. I then began having the shakes, the same shakes you'd have during a severe fever (though again, no actual fever). When I got home from work, I realized that my eyes were bloodshot red and I had no appetite. Finally, I excreted some of the weirdest looking waste I've ever seen in the toilet. The symptoms continued through the night despite already realizing it was the Lactaid and stopping entirely. By the next morning, the sore throat was so bad I thought I had strep throat. Finally, by mid-day most of the symptoms had gone away except for the excruciating headache and loss of appetite. Good lord. This is a lactase supplement which should be harmless. I've never had a reaction this severe to any prescription drug. Will NEVER even touch a Lactaid package again. Wow.

I too was excited to imagine being able to take a supplement and consume dairy in moderation. Unfortunately, to my surprise I began experiencing nausea and vomiting shortly after beginning these tablets. Sometimes the nausea and vomiting would not present itself for more than 46 hours after ingesting a single tablet.

My roommate swears by lactaid and has it before almost every meal. I tried it a few times and always ended up nauseous. The most recent (and final) time I took it, I became incredibly nauseous after about an hour, and it devolved into hours long stomach pain, vomiting, and diarrhea.

Makes me throw up about 3-4 hours later. Lactaid milk PROTEIN formula also did this to me. The regular LACTAID milk seems to agree with me though and I have had no problems.

I'm not sure if this is a different formulation than the previous 3-pill dose, but after trying the new version on two separate occasions I got a severe stomach ache each time. We were enjoying pizza (or trying to) at the farm where we'd gotten married several years earlier and this was the first time we'd been able to go back, so it was definitely a bummer.

Wonderful product helps so much for lactose intolerance I love the pill workes better if I take it 10 minutes after i eat have been using this product for 3 years can't see eating dairy without it thanks Johnson & Johnson for another wonderful product

I'm way better having a little lactose without this. It gives me diarrhea as if I have food poisoning. Tried it twice.

I would not recommend these tablets. As with many other reviews on this page, my husband took the tablets and shortly after began severely throwing up. He began complaining of severe stomach pain and then started vomiting. This apparently a side effect that is NOT listed on the product. This is his first time taking the product. Because of this we are missing the Lions playoff game tonight!