It may take 2 to 3 months before you will notice any improvement in your symptoms of osteoarthritis. Further study is needed to establish the safety of long-term oral use beyond 1 year or topical use of devil’s claw.
If at any point your symptoms for which you are using devil's claw get worse, consult your health care provider.
Common side effects include diarrhea, nausea, vomiting, stomach pain, and skin reactions.
Devil's claw can interact with some medications by decreasing how quickly the liver breaks down certain medications (e.g., antifungal medications such as ketoconazole or acid reflux medication such as lansoprazole or pantoprazole). It may also increase the effects of warfarin, a medication that is used to slow blood clotting. Consult your health care provider for more information.
Women who are pregnant or breast-feeding should not use devil's claw. Before taking any new medications, including natural health products, speak to your physician, pharmacist, or other health care provider. Tell your health care provider about any natural health products you may be taking.