Traditionally, crystal was made with addition of lead. The most prized lead crystal contains 24 percent lead oxide which provides the optimum weight, hardness and color. The addition of lead oxide makes crystal softer than glass and allows crystal artisans to cut and bevel lead crystal with brilliant edges.
The most common causes of abdominal bloating are: 1  swallowing air. 2  constipation. 3  heartburn. 4  irritable bowel syndrome. 5  intolerance to dairy products or other food items. 6  eating too fast. 7  weight gain. 8  overgrowth of bacteria in the small bowel.
Tricyclic anti-depressants that are commonly used in the treatment of fibromyalgia include Amitriptyline (Elavil), Nortriptyline (Pamelor), and Doxepin (Sinequan).ommon side effects of Amitriptyline may include morning sedation, dry mouth, confusion and urinary retention. Fibromyalgia patients seem especially sensitive to these side effects. Therefore, the dose should be individualized and generally begun at the lowest possible dose (such as 5 to 10 mg) at nighttime.