Oyster Shell Extract
Also known as: Oyster shell powder, Oyster shell calcium, Crassostrea gigas extract, Oyster Shell Extract
Overview
Oyster shell extract is a dietary mineral supplement derived from the shells of the Pacific oyster (*Crassostrea gigas*). It primarily consists of calcium carbonate, essential for maintaining bone health. Additionally, the extract contains bioactive water-soluble matrix proteins (WSMP) associated with various health benefits, especially in enhancing bone density and function. Research indicates its antioxidant and anti-inflammatory properties, particularly benefitting individuals with osteoporosis. Despite positive findings, further investigations are necessary to confirm these benefits across diverse populations. Oyster shell extract can be found in several forms including capsules, tablets, and powders, making it a convenient option for increasing calcium intake.
Benefits
1. Bone Health: Oyster shell extract may enhance bone formation and density, particularly for patients with osteoporosis, supported by studies indicating improved bone health markers. 2. Bioactive Compounds: The extract contains diverse peptides that exhibit moderate evidence for antioxidant, antimicrobial, antihypertensive, anticancer, and anti-fatigue properties. 3. Immune System Support: With a notable zinc content, oyster shell extract has shown potential for boosting immune function, as evidenced by early studies indicating enhanced immune response and related health benefits.
How it works
Oyster shell extract promotes osteoblast proliferation and differentiation through water-soluble matrix proteins (WSMP), stimulating vital enzymes such as alkaline phosphatase that are crucial for bone mineralization. The bioactive peptides within the extract also engage cellular pathways enhancing antioxidant and anti-inflammatory responses, thus supporting both bone health and overall wellness.
Side effects
Oyster shell extract is generally safe for most users; however, over 5% may experience gastrointestinal issues like constipation, bloating, or gas due to increased calcium intake. Rare allergic reactions to shellfish proteins can occur, and less common side effects affecting 1-5% of users include an increased risk of kidney stones and potential interactions with anticoagulant medications or specific antibiotics. Severe reactions and instances of hypercalcemia from excessive consumption are rare, affecting fewer than 1% of users. Individuals with shellfish allergies, hypercalcemia, or existing kidney disorders should seek medical advice prior to use. Pregnant or breastfeeding women are also advised to consult a healthcare professional.
Dosage
The recommended dosage of oyster shell extract aligns with adult daily calcium intake guidelines, typically ranging from 500 to 1,000 mg for optimal bone health. The Tolerable Upper Intake Level for adults is 2,500 mg per day; exceeding this limit may lead to adverse health effects. For better calcium absorption, it is suggested to take the supplement with meals. It is available in various forms such as capsules, tablets, and powders. Ensuring adequate Vitamin D levels is also crucial for maximizing calcium absorption.
FAQs
Is oyster shell extract safe?
Yes, generally safe when taken as directed, but consult a healthcare provider if you have underlying health issues.
How should I take oyster shell extract?
It is best taken with meals to enhance calcium absorption.
What benefits can I expect?
Potential benefits include improved bone density; however, results may vary among individuals.
Can I rely solely on oyster shell extract for calcium?
No, it should complement a balanced diet rather than replace it.
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