On the off chance that it's relevant to you or anybody else reading, the lactaid dose matters quite a bit. The first time I bought it, the packaging recommended 3 tablets for a dose. Why they didn't just do bigger tablets, I'll never know. They also say they're only helping you for about 30 minutes, so take more if you eat lactose 30 minutes past your lactaid dose. Basically just read the directions and err on the side of taking more if you aren't sure.
Milk isn't the only product that contains lactose. In my opinion, a life without cheese is not a life worth living. And I know there are alternatives, but I don't think any of them are anywhere near as delicious as cheese made from milk of cows and goats.
Whatever floats your boat, but I'm wary of counterfeit stuff on Amazon these days, so things meant to be ingested are a no-go for me unless I can be reasonably certain it's not a reseller. Plus I don't like giving more money to bezos if I can help it, but that's an entirely different conversation.