I've only done 25C, which I like quite a lot, but it is also quite distinct from lsd (if I had my choice of either, I'd like a lil of each), and also has a narrower and steeper dose-range. Too much feels physically horrible, and could be dangerous. If your tabs are like most of the ones about, I'd take two, I'd be real careful about taking more than three (and why folks like you getting scammed is so dangerous, with most lsd blotter, I'd want 3-5 to start, and physically I wouldn't fear taking 15).
They also don't get into your system as easily, if you take them in the future, put the tabs inbetween your gum and cheek and try not to swallow yer spit for a half hour or so. Tolerance varies from user to user, but like lsd, don't expect much if you dose again this week, two week breaks are better...
and check this thread out:
http://www.bluelight.ru/vb/threads/617972-The-Big-amp-Dandy-25I-NBOMe-Thread-(2nd-edition)
In the future, LSD doesn't taste like much of anything at all, and doesn't numb your tongue. If it's bitter and doesn't numb your tongue it's most likely a DOX compound, if it's bitter and numbs, prolly 25I. A test kit is even better and can be found online. '
Happy learning.