Calcium Oyster Shell

Name: Calcium Oyster Shell

What is the most important information I should know about Calcium Oyster Shell (calcium carbonate)?

Calcium can make it harder for your body to absorb certain medicines. Tell your doctor about all medicines you use, and those you start or stop using during your treatment with calcium carbonate.

How should I take Calcium Oyster Shell (calcium carbonate)?

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

Calcium carbonate works best if you take it with food.

Swallow the calcium carbonate tablet or capsule with a full glass of water.

The chewable tablet should be chewed before you swallow it.

Shake the oral suspension (liquid) well just before you measure a dose. Measure liquid medicine with the dosing syringe provided, or with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.

Use the calcium carbonate powder as directed. Allow the powder to dissolve completely, then consume the mixture.

Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Calcium Oyster Shell (calcium carbonate) side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • little or no urinating;

  • swelling, rapid weight gain; or

  • high levels of calcium in the blood--nausea, vomiting, stomach pain, loss of appetite, constipation, increased thirst or urination, muscle pain or weakness, joint pain, confusion, and feeling tired or restless.

Common side effects may include:

  • nausea or vomiting;

  • constipation.

  • decreased appetite;

  • dry mouth or increased thirst; or

  • urinating more than usual.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Very hard stools (constipation).
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