Improve your nutrition if it is poor.
Avoid gum irritants such as commercial mouthwashes, alcohol, and tobacco. Change your toothpaste brand and avoid using mouthwashes if your swollen gums are caused by sensitivity to toothpaste or mouthwash.
Brush and floss your teeth regularly. See a periodontist or dentist at least every 6 months.
If your swollen gums are caused by a reaction to a drug, talk to your doctor about using a different type of medication. Never change medications without first talking to your doctor.