Crack is still very effective in treating colds, provided that it works well for some people. It may not work so well for some people, who are more resistant to this medicine. Generally, for cold and flu, if there is a constant runny nose or dizziness before taking other medications. At this time, it is possible to take Crypto or Aminoglutethimide capsule to stop the effect of wind-cold quickly. But for wind-heat cold, it is generally not very effective, so this effect still varies from person to person.