One of the most common undesirable effects of weed, especially in new users, is dizziness. The good news is that as soon as you develop some tolerance to THC, these effects get weaker and then disappear completely. Nevertheless, you may avoid being dizzy from the start by choosing a strain that is low in THC and high in CBD. Or you can go the other way around and look at the list of strains that other users have reported as making them dizzy – these are the strains you should stay away from.