Not only does Tagamet HB prevent heartburn before it starts, but it also safely controls the production of stomach acid for hours and hours -- something antacids, such as Mylanta(R) and Maalox(R), can't claim.
A sedentary person just beginning circuit training that exercises three to four days a week at a moderate-intensity should begin to notice some initial improvement in aerobic endurance within one to three weeks, according to the American College of Sports Medicine.
In general, existing guidelines recommend that exercise training for patients with COPD be undertaken at least 2 to 5 days per week, for at least 20 to 30 min per session [12] over an 8 to 12 week period [12,49].