Can’t handle Allicin

I have methane overgrowth and I’m taking rifaximin and allimax but even though the allimax pills I take are only 180mg I can’t handle it, whenever I take it i can’t digest it and for hours i keep burping this garlicky taste. Sometimes I can’t even burp and I feel like a knot in my throat (I guess it’s air because when I digest it goes away). Does someone else experience the same? Any trick to take it? Maybe it would be better on an empty stomach?