Cartilage (Bovine and Shark) (PDQ®): Complementary and alternative medicine - Health Professional Information [NCI] - Adverse Effects
The side effects associated with cartilage therapy are generally described as mild to moderate in severity. Inflammation at injection sites, dysgeusia, fatigue, nausea, dyspepsia, fever, dizziness, and edema of the scrotum have been reported after treatment with the bovine (cow) cartilage product Catrix.[1,2,3] Nausea, vomiting, abdominal cramping and/or bloating, constipation, hypotension, hyperglycemia, generalized weakness, and hypercalcemia have been associated with the use of powdered shark cartilage.[4,5,6] The high level of calcium in shark cartilage may contribute to the development of hypercalcemia. Reviewed in [5,7,8] In addition, one case of hepatitis has been associated with the use of powdered shark cartilage. Nausea, vomiting, and dyspepsia are the most commonly reported side effects following treatment with AE-941/Neovastat, the aqueous extract of shark cartilage. Reviewed in 
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- Reviews of Therapies: Biologic/Organic/Pharmacologic Therapies: Cartilage. Houston, Tex: M.D. Anderson Cancer Center, 2003. Available online. Last accessed August 10, 2012.
- Jungi WF: Dangerous nutrition. Support Care Cancer 11 (4): 197-8, 2003.
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- Falardeau P, Champagne P, Poyet P, et al.: Neovastat, a naturally occurring multifunctional antiangiogenic drug, in phase III clinical trials. Semin Oncol 28 (6): 620-5, 2001.