The natural ingredients of Osteo-Guard are:

• Calcium
  Besides being the most abundant mineral in the body, calcium plays a vital role in keeping our bones healthy and strong. Unfortunately, most Americans get only half of the calcium their body needs from food.
  
  The calcium source in Osteo-Guard is derived from whole bone extract - it is the only form shown not only to prevent calcium loss, but also to put calcium back where it belongs: your bones.
  
  Recent research shows that in addition to bone health, calcium may also be beneficial as treatment for high blood pressure, heart attack, colon cancer, and pre-menstrual syndrome (PMS).
  
  
• Magnesium
  Like calcium, magnesium is important for bone health. This mineral helps the body utilize vitamin D to increase bone density and help prevent bone-thinning diseases such as osteoporosis.
  
  Magnesium also plays other important health roles in our body, including helping to prevent heart disease, treat high blood pressure, fibromyalgia and diabetes, ease muscle pain, aches and cramps, relieve pre-menstrual symptoms (PMS), irritability, and migraines.
  
  
• Vitamin D
  Vitamin D helps your body absorb the calcium it needs, thus helping it to form and maintain strong bones. Vitamin D also works with other vitamins, hormones, and minerals to promote bone mineralization and prevent the bones from becoming weak, thin and brittle.
  
  Other functions of Vitamin D include helping the immune system and regulating cell growth.
  
  
• Vitamins B1, C, and K
  Vitamin B1 or thiamin is essential for growth and development by helping the body convert carbohydrates from food into energy. It also helps promote proper heart and nervous system functions.
  
  Vitamin C is a powerful antioxidant that helps protect the cell from the effects of free radicals and aging, as well as boost the body's immune system.
  
  First discovered as essential in blood clotting, research has shown that vitamin K also play an important role in the mineralization and building of strong bones.
  
  
• Boron, Copper, Manganese, and Zinc
  The trace elements boron, copper, manganese and zinc help the the body absorb and utilize calcium for building and strengthening bones, as well as preventing bone injuries and osteoporosis.
  
  
• Horsetail Herb
  This primitive plant (horsetail has been growing since the dinosaurs roamed the earth) is rich in bio-available silica. Our body requires this mineral to keep connective tissue, hair, teeth, and joint cartilage healthy and strong.
  
  
• N-Acetyl Glucosamine
  Also known as NAG, n-acetyl glucosamine is an amino sugar nutrient found in joints and cartilage. Extensive research studies have shown that glucosamine can relieve the pain, stiffness, and swelling of arthritis, slow and even reverse the damage from osteoarthritis and other joint problems.