Shark Cartilage - an overview
Shark cartilage powder, prepared from cartilage from the fins of hammerhead sharks (Sphyrna lewini) or spiny dogfish (Squalus acanthias), is promoted as a treatment for arthritis and cancer [56], based on antiangiogenic properties, but crude extracts are ineffective [57], presumably because the active constituents, such as sphyrnastatins are not absorbed.
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