 Or if the weather turns bad, you'll be staying inside probably and perhaps you'll have some friends over for an evening of relaxation and fun. Or whatever your plans, be sure to have Alka-Seltzer handy. Then if your weekend activity should cause you to be troubled by muscular aches and pains, a headache, sour, upset stomach, or a touch of acid indigestion, Alka-Seltzer stands ready to help you get quick, comforting relief.