Calcium lactate is a mineral that is used to treat or prevent low blood calcium levels (hypocalcemia) in people who do not get enough calcium from food.

Calcium lactate is also used in the treatment of conditions such as osteoporosis, disorders of the parathyroid gland, or certain muscle problems.

Calcium lactate may also be used for purposes not listed in this medication guide.

Ask a doctor or pharmacist if this medicine is safe to use if you have ever had:

• kidney disease, kidney stones;
• heart problems;
• a lung disorder called sarcoidosis;
• a pancreas disorder;
• decreased stomach acid; or
• any condition that makes it hard for your body to absorb nutrients from food (malabsorption).

Ask a doctor before using this medicine if you are pregnant or breastfeeding. Your dose needs may be different during pregnancy or while nursing a baby.

Do not give this medicine to a child without medical advice.

Use Calcium Lactate (Ridactate) 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.

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

Stop using calcium lactate and call your doctor at once if you have:

• severe nausea, vomiting, or constipation; or
• high blood calcium--confusion, tiredness, loss of appetite, increased thirst or urination, weight loss.

Common side effects may include:

• stomach pain, gas; or
• constipation.

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.

Follow your doctor's instructions about any restrictions on food, beverages, or activity.