Both sea dragon and sea horse have the effects of warming the kidney and strengthening yang (warming and tonifying yang qi in the kidney), dispersing knots and eliminating swellings (dispersing hard lumps and eliminating abscesses). They are often used to treat impotence and spermatorrhea, bruises and injuries, carbuncles and furuncles (sores on the limbs or face, small in shape with deep roots, as hard as nails), and other conditions. Hai Long is a deficiency tonic, belonging to the liver meridian, kidney meridian. It is warm in nature, sweet and salty in taste. It is often used to treat impotence and spermatorrhea, bruises and injuries, impediments and accumulations in the abdomen (abdominal lumps, either distended or painful), carbuncles and boils. Hippocampus is a tonic for deficiency, which belongs to the liver and kidney meridians. It is sweet, salty and warm in nature. It is mostly used for treating impotence due to kidney deficiency, bruises, spermatorrhea, and frequent nocturia. Note that these two drugs should be used with caution for pregnant women, people with yin deficiency and fire (deficiency of yin and essence in the body, resulting in hyperactive fire), and people with exopathogens.