That's a good question. According the TSA, you are allowed 3 oz liquid or paste. A tube of Ivermectin is 1/5 ounce which is enough doses for a 200 pound man, at 1 gram per dose (6 doses). That would be 9 doses per 150 lb woman. You can't overdose on it. It would take pounds of Ivermectin to hurt you.
But for international travel, getting a prescription would be better. Who knows EU rules? They probably won't let you in it if they consider it animal medicine.
Quercetin with Zinc is a good substitute for Ivermectin, and was recommended by Dr. Valdimir Zelenko as a good substitute for hydroxychloroquine or ivermectin. It is an over-the-counter supplement from Amazon in the US and Germany. If I wanted to be 100% sure I would use the over-the-counter quercetin supplement for travel in Germany.
Personally I've been taking both Ivermectin and Quercetin with Zinc ever since covid came out, and I haven't been sick. No ill effects from either medicine.
