Public advisory

"Dragon Power" contains undeclared prescription drug: May pose serious risk to health

Starting date:
November 20, 2015
Posting date:
November 20, 2015
Type of communication:
Natural health products
Source of recall:
Health Canada
Undeclared Substance
General Public
Identification number:


Dragon Power, an unauthorized product sold at The Herb Depot, 407-409 Dundas Street West, Toronto, Ontario, was found to contain an undeclared prescription drug (sildenafil) that may pose a serious risk to the health of Canadians. The product may also have been sold bearing the Natural Product Number NPN 80025214, or under the names "Super Dragon Power" or "Dragon Power II".

Products affected

Dragon Power

What you should do

  • Consult your healthcare practitioner with any questions or concerns regarding use of this product.
  • Report any adverse events to Health Canada.
  • Report complaints about health products to Health Canada by calling toll-free to 1-800-267-9675, or complete an online complaint form.

Who is affected

Canadians who have purchased or used this product, particularly people with heart problems.


Sildenafil and its analogs are prescription medications that should only be used under the supervision of a health care practitioner. Products containing sildenafil should never be used by individuals taking any kind of nitrate drug (e.g. nitroglycerine) as they can cause potentially life-threatening low blood pressure.

Individuals with heart problems including high blood pressure, a history of heart attack, stroke, abnormal heart beat or chest pain are at higher risk of cardiovascular side-effects if they engage in sexual activity, including if they use sildenafil to help them achieve an erection. Other possible side-effects of using sildenafil include headache, facial flushing, indigestion, dizziness, abnormal vision and hearing loss.

Report health or safety concerns

  • Call toll-free at 1-866-234-2345
  • Visit MedEffect Canada's web page on Adverse Reaction Reporting for information on how to report online, by mail or by fax.

Stay connected with Health Canada and receive the latest advisories and product recalls using social media tools.

Media enquiries

Health Canada

Public enquiries

1-866 225-0709

What Health Canada is doing

Health Canada has tested Dragon Power and found it to contain the prescription drug sildenafil. The retailer has agreed to stop sale and has removed the product from its store's shelves.

Health Canada is actively following up and will take appropriate action and inform Canadians should any additional risks or products be identified.


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