Calcium Lactate

Quick Summary

Calcium lactate is a calcium salt commonly used as a dietary calcium supplement. It provides a source of calcium, an essential mineral that plays important roles in various physiological functions including bone health, muscle function, nerve transmission, and blood clotting.

What is it?

Calcium lactate is a calcium salt formed by calcium and lactic acid. It is one of several supplemental forms of calcium and is often found in dietary supplements and fortified foods. Calcium lactate contributes to total calcium intake, which is vital for maintaining multiple biological processes. It is chemically distinct from other calcium salts such as calcium carbonate or calcium citrate but serves the same essential purpose as a calcium source.

Main Functions in the Body

• Contributes to bone and teeth mineralization and strength
• Supports muscle contraction and nerve transmission
• Involved in blood clotting processes
• Plays roles in cellular signaling and enzyme activation

Recommended Intake and Upper Limit

The recommended dietary allowances (RDAs) for calcium vary according to age, sex, and life stage. These guidelines are established to support bone health and overall physiological functioning. Calcium lactate serves as one supplemental form contributing to total calcium intake.

The tolerable upper intake level (UL) for calcium applies to total elemental calcium intake regardless of the specific calcium salt consumed. Excessive calcium intake may lead to adverse effects; therefore, it is important to follow intake recommendations appropriate to individual circumstances.

For detailed intake recommendations, consult resources such as the NIH Office of Dietary Supplements fact sheet on Calcium.

Best Food Sources

• Dairy products (milk, cheese, yogurt)
• Leafy green vegetables
• Calcium-fortified foods
• Certain fish with edible bones (e.g., sardines, canned salmon)

Deficiency: Causes, Symptoms and Risk Groups

Calcium deficiency may result from inadequate dietary intake or impaired absorption. Risk groups include:

• Postmenopausal women
• Older adults
• Individuals with inadequate dietary calcium intake
• People with malabsorption disorders affecting calcium uptake

Signs and symptoms potentially associated with calcium deficiency include:

• Reduced bone mineral density leading to osteopenia and osteoporosis
• Muscle cramps or spasms
• Dental problems such as weakened tooth enamel
• Increased risk of bone fractures

Addressing calcium insufficiency typically involves adequate dietary intake and, where appropriate, supplementation with forms such as calcium lactate. However, supplement use should be considered within the context of overall calcium intake.

Supplement Forms

• Calcium lactate
• Calcium carbonate
• Calcium citrate
• Calcium gluconate

Each form differs in chemical composition and bioavailability, which can influence absorption and tolerance in certain individuals.

Absorption and Bioavailability

Calcium lactate is considered to have moderate bioavailability compared to other calcium salts. Absorption is influenced by factors such as compound solubility and individual digestive health.

Factors that may enhance calcium absorption include:

• Adequate vitamin D status, which facilitates calcium uptake
• Acidic gastric environment improving calcium solubility

Inhibitors of calcium absorption can include:

• High dietary intake of oxalates and phytates, which bind calcium
• Certain medications that may interfere with calcium metabolism

Compared with calcium carbonate, calcium lactate is more soluble, which may facilitate better absorption in some individuals, particularly those with lower stomach acid levels.

Potential Benefits: What Does the Evidence Say?

Bone Health and Prevention of Calcium Deficiency

Calcium’s essential role in bone mineral density maintenance and prevention of deficiency-related bone disorders is well established. Adequate calcium intake supports skeletal strength and function.

Specific clinical evidence differentiating calcium lactate’s benefits from other calcium salts is limited. Thus, while calcium lactate can serve as a calcium source, no clear superiority or distinct clinical benefits compared to other calcium forms have been confirmed in the supplied evidence.

Side Effects and Toxicity

Common side effects associated with calcium supplementation including calcium lactate may involve mild gastrointestinal symptoms such as constipation or bloating, especially at higher intakes.

Excessive calcium intake can contribute to hypercalcemia and related complications. However, toxicity concerns relate to total calcium intake rather than calcium lactate specifically.

Consuming calcium above the established tolerable upper intake level may increase risks of kidney stones and vascular calcification.

Populations requiring caution include:

• Individuals with kidney disease
• Those prone to kidney stones

Drug and Nutrient Interactions

No specific interactions related to calcium lactate were identified in the available evidence. In general, certain medications (e.g., some antibiotics, bisphosphonates) may interfere with calcium absorption or be affected by concurrent calcium intake.

Who Should Be Careful?

People who are pregnant, breastfeeding, or living with medical conditions such as kidney disease, thyroid disorders, or iron overload conditions should consult a healthcare professional before using calcium lactate supplements. This also applies to individuals using medications that may interact with calcium.

Frequently Asked Questions

Is calcium lactate better absorbed than other calcium supplements?

Calcium lactate is more soluble than calcium carbonate, which might improve absorption for some people, especially those with reduced stomach acid. However, differences in absorption may be modest and depend on individual factors.

Can calcium lactate prevent osteoporosis?

Calcium intake plays a key role in bone health and may help reduce the risk of bone loss. Calcium lactate can provide calcium, but no evidence shows it is superior to other calcium forms for osteoporosis prevention.

Are there risks in taking calcium lactate supplements?

Taking calcium lactate in excess of recommended levels may cause gastrointestinal discomfort or contribute to excessive calcium levels, which can lead to adverse effects. Following recommended intake guidelines is important.

Can I get enough calcium from diet alone?

Many people can meet their calcium needs through a balanced diet including dairy or fortified foods and leafy greens. Supplements like calcium lactate may be useful if dietary intake is insufficient or absorption is compromised.

Evidence Limitations

• No specific clinical trials were provided that differentiate calcium lactate from other calcium salts.
• EU authorized health claims specific to calcium lactate were not identified; claims for calcium in general should be verified separately.
• Safety details specific to calcium lactate are incomplete; general calcium safety and toxicity guidance applies.

References

• NIH Office of Dietary Supplements: Calcium Fact Sheet for Health Professionals

Disclaimer

This information is intended for educational purposes and should not replace professional medical advice. Individuals who are pregnant, breastfeeding, have medical conditions, or take medications should consult their healthcare provider before starting any supplement.

Last Reviewed

June 2024