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Herb Vigour, Natural Vigour and China Vigour

Foreign Product Alert
2008-128
August 11, 2008
For immediate release

Health Canada is advising consumers not to use the products specified below due to concerns about possible side-effects. More info

Date of alert: August 11, 2008
Source of Alert: Netherlands Health Care Inspectorate; U.K. Medicines and Healthcare Products Regulatory Agency; Danish Medicines Agency
Product Names:

  • Herb Vigour
  • Natural Vigour
  • China Vigour

Manufacturer / Place of Origin
Kunming Dali Company / unknown

Product Description
Herb Vigour, Natural Vigour and China Vigour are promoted as natural products for the treatment of erectile dysfunction.

Herb Vigour:

Herb Vigour

Natural Vigour:

Natural Vigour

China Vigour:

China Vigour

Reason for Warning
The Netherlands Health Care Inspectorate, the U.K. Medicines and Healthcare Products Regulatory Agency, and the Danish Medicines Agency have warned consumers not to use Herb Vigour, Natural Vigour or China Vigour because they were found to contain tadalafil (Herb Vigour), vardenafil (Natural Vigour) and an unapproved substance with a structure similar to sildenafil (China Vigour).

Tadalafil, vardenafil and sildenafil are all prescription drugs used for the treatment of erectile dysfunction, and should only be used under the supervision of a health care professional.

Possible Side-Effects
Unsupervised use of tadalafil, vardenafil or sildenafil by patients with heart disease can result in serious cardiovascular side-effects such as sudden cardiac death, heart attack, stroke, hypertension, chest pain and abnormal heartbeat. Additionally, use of tadalafil, vardenafil or sildenafil may be associated with other side-effects including temporary vision loss, seizure, prolonged erection, headache, flushing, nasal congestion and abdominal pain.

Products containing tadalafil, vardenafil or sildenafil should not be used by individuals taking any type of nitrate drug (e.g., nitroglycerine) due to the risk of developing potentially life-threatening low blood pressure.

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Media Inquiries:
Health Canada
(613) 957-2983

For more details on these Foreign Product Alerts, please visit the Health Canada Web site.


These products are not authorized for sale in Canada and have not been found in the Canadian marketplace, but it is possible they may have been brought into the country by travellers or purchased over the Internet.

Canadians who have this product are advised not to use it, and should consult with a health care professional if they have concerns about their health related to the use of this product.

Drugs and natural health products that are authorized for sale in Canada will have either an eight-digit Drug Identification Number (DIN), a Natural Product Number (NPN) or a Homeopathic Medicine Number (DIN-HM) on the label. These numbers indicate that the products have been assessed by Health Canada for safety, effectiveness and quality.

Health Canada advises Canadians to contact the Health Products and Food Branch Inspectorate at 1-800-267-9675 if they find any of the products listed above in the Canadian marketplace.

For more information about the information contained in this advisory, please contact Health Canada's public inquiries line at (613) 957-2991 or toll-free at 1-866-225-0709.

As of the date of this posting, no adverse reactions suspected to be associated with the use of this product have been reported in Canada.