How can I prevent asthma symptoms after exercise?

Use inhaler. Once your asthma symptoms has been well controlled except for exercise-induced bronchospasms, an additional 2-3 puffs of albuterol/xopenex inhalation 10 minutes before exercise should be helpful.
Treatment... This is called exercise-induced asthma. The treatment includes the use of a bronchodilator inhaler before you begin exercising and have it available for use once you stop exercising. See your doctor so that this can be prescribed for you. It is usually effective in controlling these symptoms, allowing you to exercise.
Albuterol before. Use 2 puffs of albuterol 20 minutes before exercise to prevent wheezing from exercise induced brochospasm. This treatment may not prevent wheezing due to poorly controlled asthma which becomes more symptomatic with exercise.

Related Questions

How can I prevent asthma symptoms?

See an allergist. The best way to manage asthma is to identify your triggers, avoid them as much as you can, and use medications to control any residual inflammation. The mistake you want to avoid is not treating the asthmatic inflammation adequately - this leads to scar tissue formation and permanent loss of lung function. Read more...
Immunotherapy. As usual, dr. Stevens gives excellent advice. I want to add that immunotherapy, either conventional allergen immunotherapy or monoclonal antibody injections of Omalizumab (xolair) are additional excellent ways to prevent asthma symptoms. In children at risk for developing asthma conventional immunotherapy significantly reduces that risk. Talk to your allergist about allergy shots. Read more...

What do you do to prevent pollens going inside your lungs to prevent allergy/asthma symptoms?

Hard. You can wear a high efficiency mask, which is hard to do. Some people try to stay indoors in controlled environment. If there is one particular kind of pollen, you might be able to avoid it. Read more...