If you want to travel to Tibet, you need to take rhodiola a few days in advance.

Under normal circumstances, you need to take it 10- 15 days in advance, but you were in a hurry when you went, and you left without making these preparations, mainly depending on your physical fitness. Some people have the effect, others have no effect. When you go to Tibet, you usually start to have a high reaction at an altitude above 3500. You need to keep a good mood and you must not catch a cold. A cold is easy to get emphysema at high altitude. And don't do strenuous exercise, remember. Generally speaking, the high reaction starts from the second day after entering the plateau, so we should strengthen exercise at ordinary times. If rhodiola still doesn't work, I suggest you prepare an oxygen emergency at high altitude and forget to adopt it!