I asked the Jagermeister producer ingredients they use because I have allergies, but they ignored me. Also get hangover from couple ounces.?

Then that is one liquor you should probably stay away from, no?

If you have allergies, do not drink it. The best drink is German beer because it has no additives. It is made from water, malt, hops and yeast by German law. Most other drinks have chemicals in them.

Jagermeister is pretty proud of the claim "Hard to crack secret formula" and that means they are not going to make it easy on a competitor to get the tastes. It has some 56 different herbs in the blend and only a few are published ( including citrus peel, licorice, anise, poppy seeds, saffron, ginger, juniper berries, and ginseng.)

A hang over is not uncommon when drinking just a few ounces of any thing with that much alcohol and an allergy to alcohol it's self is not unheard of.