Daflon Tablets: Aids Increase the tone with the vein walls during the leg to drive the blood back again into circulation and relieve leg heaviness, cramps and swelling. Unexpected Swelling in One Leg: Sudden swelling in a single leg, particularly when accompanied by discomfort and redness, could suggest a blood clot https://www.sgvascularctr.com/swelling-leg-treatment-singapore/