Chlorpheniramine is an antihistamine. It blocks a natural substance in your body called histamine that normally causes common cold symptoms. By blocking histamine, chlorpheniramine lowers inflammation (swelling) and relieves runny or itchy nose, sneezing, and watery eyes.

Alka-Seltzer Plus Cold Effervescent Tablets dissolve quickly in water and are instantly ready to start working.

Directions. adults and children 12 years and over: take 2 tablets fully dissolved in 4 oz of water every 4 hours. Do not exceed 8 tablets in 24 hours or as directed by a doctor. store at room temperature.

Alka-Seltzer Plus Cold is a combination medicine used to treat headache, fever, body aches, runny or stuffy nose, sneezing, itching, watery eyes, and sinus congestion caused by allergies, the common cold, or the flu. Alka-Seltzer Plus Cold may also be used for purposes not listed in this medication guide.

Alka-Seltzer Plus Cold might make you feel drowsy or sleepy, so don't drive or operate any machinery until you know how this medication affects you. Don't drink alcohol when taking this medication because it might make you feel more drowsy or sleepy.

for the temporary relief of: heartburn, acid indigestion, and sour stomach when accompanied with headache or body aches and pains. upset stomach with headache from overindulgence in food or drink. headache, body aches, and pain alone.

Alka-Seltzer Plus Cold might make you feel drowsy or sleepy, so don't drive or operate any machinery until you know how this medication affects you. Don't drink alcohol when taking this medication because it might make you feel more drowsy or sleepy.

Actually, Alka Seltzer Original contains 324mg of aspirin, which is the equivalent of a full-dose aspirin tablet. Taking this on a regular basis can lead to stomach ulcers and bleeding.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects.

Take with or without food. Take with food if it causes an upset stomach. Dissolve in 1/2 cup (4 ounces/120 mL) of water. Drink after the tablets have dissolved all the way.

What is Alka-Seltzer used for?

1. Heartburn, indigestion, and sour stomach with headache, body aches, or pain.
2. Upset stomach and headache from having too much food or drink.
3. Headache, body aches, and pain alone.

for the temporary relief of:

• heartburn, acid indigestion, and sour stomach when accompanied with headache or body aches and pains.
• upset stomach with headache from overindulgence in food or drink.
• headache, body aches, and pain alone.