About eight to ten years ago i had a violent reaction to lactaid....

Maybe your system has changed and you not only can't tolerate the milk products but also you might now be sensitive to the protein in milk. My nephew can't take Lactaid pills because he is allergic to the protein.

Our bodies change - while something didn't occur before, it now suddenly is rebelling against a food that a person could always eat.

I'm having a similar problem with Lactaid Fast-Act ultra.

I can take the regular lactaid pills, 3 or 4 of them at a time (which equates to the same amount of active ingredient as 1 Lactaid Fast Act Ultra) without a problem. But if I take a single Lactaid Fast Act Ultra.......BAM, it hits me hard. I'm out of the game for the next 36 hours with cramps, nausea, and pain in the area of the liver. My pharmasist is guessing it's one of the binders used in the Ultra tablet. If you read the label you'll see the non-active ingredients are different from the regular Lactaid pills.

I've had the same problem with Lactaid. I was taking the Fast-Act ones, and it worked fine a couple times. Twice though, I took two with large amounts of dairy and ended up vomiting. This was weird, because dairy had never made me vomit before.

Then once I took a Lactaid and got too busy to eat the dairy I was planning on having and ended up vomiting really painfully, complete with the yellow liquid at the end.

I guess my next steps based on your posts are to try Lactaid Milk and the non Fast-Act pills. The milk is actually treated with a lactase producing yeast, while the pills are made from a lactase producting mold. It is possible that it is that mold we are allergic to. That doesn't explain the Fast-Act versus non Fast-Act thing though, unless they were produced differently.

I am sitting here scared because the vomiting happen to me the other night. I didn't know what the deal was but now I am scared because I jus took a pill and ate ice cream. Should I jus take something to combat the vomiting before it happens again! It was horrible and the yellow stuff followed too. I am a wimp when it comes to vomiting!

Lactaid never bothered me for almost a month. Then one day I woke up in the middle of the night so sick I vomited all day, even missed work.
Thinking it was from eating fast food, I waited a week and took the ultra kind just one time before eating ice cream. Same sickness , now I feel permanently sick, so I fear ever using Lactaid pills. They are dangerous!!