Opioids are substances that act on opioid receptors to produce morphine-like effects. Medically they are primarily used for pain relief, including anesthesia. Other medical uses include suppression of diarrhea, treating addiction, reversing opioid overdose, suppressing cough, and suppressing opioid induced constipation.
Other foods that are high in calcium include: 1  Spinach. 2  Kale. 3  Okra. Collards. 4  Soybeans. White beans.  Some fish, like sardines, salmon, perch, and rainbow 1  trout. Foods that are calcium-fortified, such as some orange juice, oatmeal, and breakfast  cereal.
Other good sources of calcium include milk products and milk substitutes, such as: 1  Flavored milk (for example, chocolate milk) 2  Lactose-free or lactose-reduced milk. 3  Buttermilk. Plain or fruit yogurt. 4  Cheese. Rice milk or soy milk with added calcium.