This is a reprint of the FDA alert.

XROCK INDUSTRIES, LLC Issues a Voluntary Nationwide Recall of X-ROCK, a Product Marketed as a Dietary Supplement to Support Male Sexual Performance, Due to Unlisted, Potentially Hazardous Ingredient

XROCK INDUSTRIES, an independent distributor of the X-ROCK products, is conducting a user level voluntary recall of certain supplement products sold by XROCK INDUSTRIES under the brand name of X-ROCK.

Finished product of X-ROCK for Men was tested and preliminarily found to contain an analogue of an ingredient in an FDA-approved drug.  Analytical tests conducted by the Food and Drug Administration (FDA) of X-ROCK for Men concluded that the products contained sildenafil and hydroxythiohomosildenafil.  Hydroxythiohomosildenafil is an analogue of sildenafil.  Sildenafil is the active pharmaceutical ingredient in an FDA-approved drug that is used to treat erectile dysfunction (ED).

Hydroxythiohomosildenafil is close in structure to sildenafil and is expected to possess a similar pharmacological and adverse event profile.  These undeclared active ingredients pose a threat to consumers because sildenafil and hydroxythiohomosildenafil may interact with nitrates found in some prescription drugs (such as nitroglycerin) and lower blood pressure to dangerous levels.  Consumers with diabetes, high blood pressure, high cholesterol, or heart disease often take nitrates.  ED is a common problem in men with these conditions, and they may seek products to enhance sexual performance.  Additionally, hydroxythiohomosildenafil, like sildenafil, may cause side effects, such as headaches and flushing. 

All codes of X-Rock for Men, within expiration, are included in this recall.

One Capsule Blister Card – sold individually
All lot numbers
within expiration


XROCK Industries has not received any reports of adverse events related to this recall.

XRock for Men was distributed in single blister cards. See attached photograph. XRock for Men was distributed Nationwide to wholesalers and retail to the consumer via internet orders from, and, and by telephone.

Customers who have this product in their possession should stop using it immediately and contact their physician if they have experienced any problems that may be related to taking this product.

The Company is advising consumers to return any unused X-ROCK, for a refund of the full purchase price, to the retail location from which it was purchased or to the Company directly if it was purchased from the Company as a part of its Direct Response Program. Consumers can call 877-976-2563 Monday through Saturday 9am-9pm EST to receive instructions for returning the product. Additional information is provided on the Company’s website at

Any adverse events or quality problems experienced with the use of this product may be reported to the   FDA’s MedWatch Adverse Event Reporting Program either online, by regular mail or by fax:

This recall is being conducted with the knowledge of the U.S. Food and Drug Administration.

The Company is taking this voluntary action because it is committed to providing accurate information on the label of its products and because it is always concerned with the health of persons who have consumed this product. The Company is reviewing the procedures and policies of all firms involved with the manufacture of the product to ensure that there will be no future issues with regard to X-ROCK’s composition and labeling. The Company is working closely with the FDA in the recall process and is committed to the quality and integrity of its products. It sincerely regrets any inconvenience to consumers and its other customers and the incomplete X-ROCK labeling information.