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Public advisory

"Stiff Rock" male sexual performance enhancement product seized from retail location in Valleyfield, QC

Starting date:
May 29, 2015
Posting date:
May 29, 2015
Type of communication:
Drugs, Natural health products
Source of recall:
Health Canada
Undeclared Substance
General Public
Identification number:


Health Canada is warning consumers that an unauthorized drug, “Stiff Rock” promoted for male sexual performance enhancement was seized from Boutique Érotique 5ieme avenue (also known as Boutique Érotique Liberté), 507 Gande-Île., Valleyfield, QC after Health Canada testing confirmed that the product contained drug ingredients: sildenafil; aminotadalafil; and hydroxythiohomosildenafil.

Products affected

“Stiff Rock”, available in one tablet per blisterpack, LOT: 100237, EXP: 2016-04-01

What you should do

• Consult with your healthcare professional  if you have used this product and have any health concerns.
• Report any adverse events to Health Canada.

Who is affected

Consumers who have bought or used “Stiff Rock”, particularly those with heart conditions.


Products containing sildenafil should only be used under the supervision of a healthcare practitioner. Sildenafil should never be used by individuals taking any kind of nitrate drug (e.g. nitroglycerine) as it 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. Other possible side effects of using sildenafil include headache, facial flushing, indigestion, dizziness, abnormal vision and hearing loss.

Hydroxythiohomosildenafil is a substance similar to sildenafil, and may pose similar health risks.

Aminotadalafil is a substance similar to tadalafil, a prescription drug used to treat erectile dysfunction and may pose similar health risks.

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

Media Enquiries:
Health Canada
(613) 957-2983

Public enquiries

Public Enquiries:
(613) 957-2991
1-866 225-0709

What Health Canada is doing

Following a seizure of a shipment of “Stiff Rock” at the border, departmental testing identified sildenafil, aminotadalafil and hydroxythiohomosildenafil. As a result, Health Canada seized additional units of “Stiff Rock” from the importer, Boutique Érotique 5ieme avenue (also known as Boutique Érotique Liberté). Should additional lots be identified, Health Canada will take appropriate action and inform Canadians.


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