Warning letter · FDA Warning Letters

Hua Da Trading, Inc.: FDA Warning Letter 664359 (Dec 20, 2023)

Agency action: Dec 20, 2023Record ID: fda_warning_-253139a29df98dbe
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What happened

Original notice title

Hua Da Trading, Inc. MARCS-CMS 664359, December 20, 2023

From the archived source record

As described below, this product is an unapproved new drug sold in violation of sections 505(a) and 301(d) of the Federal Food, Drug, and Cosmetic Act (FD&C Act), 21 U.S.C. 355(a) and 331(d). Furthermore, your “WeFun” is a misbranded drug under section 502 of the FD&C Act, 21 U.S.C. 352, and sold in violation of section 301(a) of the FD&C Act, 21 U.S.C. 331(a). FDA confirmed through laboratory analysis that a sample of your “WeFun” product contains the undeclared pharmaceutical ingredient sildenafil. This undeclared ingredient may interact with nitrates found in some prescription drugs, such as nitroglycerin, and may lower blood pressure to dangerous levels. Unapproved New Drugs Your “WeFun” product is a drug as defined by section 201(g)(1) of the FD&C Act 21, U.S.C. 321(g)(1) because it is intended to prevent, treat, or cure disease conditions and/or affect the structure or function of the body. Misbranded Drug Your “WeFun” product is also misbranded under section 502(f)(1) of the FD&C Act, 21 U.S.C. 352(f)(1), in that its labeling fails to bear adequate directions for use. Prescription drugs, as defined in section 503(b)(1) of the FD&C Act, 21 U.S.C. 353(b)(1), include those that, because of their toxicity or other potentiality for harmful effect, and/or the method of their use, and/or the collateral measures necessary for their use, are not safe for use except under supervision of a practitioner licensed by law to administer them. Your “WeFun” product, which contains undeclared sildenafil, is a prescription drug as defined in section 503(b)(1)(A) of the FD&C Act, 21 U.S.C. 353(b)(1)(A), and as such, can be used safely only at the direction, and under the supervision, of a licensed practitioner. For these reasons, your “WeFun” product is misbranded under section 502(f)(1) of the FD&C Act.

What the official notice says to do

Check the original notice for the instructions that apply to the named product, company, and affected lots.

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Status and source details

Status recorded in the archive
No closeout listed in FDA table
Source checked
Jul 16, 2026
Record revision
81cef7683ccc

This is a dated record. Its current status may have changed since the source was captured. A record applies to its stated scope; it is not a safety rating for every product from a company.

Sources, dates, and coverage →

What is affected

Product
WeFun; PERFORMANCE; WeFun Natural Male Energy Supplement, Amplifier for Strength, Performance, Energy, and Endurance; We Fun; BLACK ANT KING; BIGGER LONGER; Germany Black Gorilla; Royal Honey; for sale variations of “BLACK ANT KING; Germany Black Gorilla” and/or various Rhino products; for sale “Black Ant King
Company
Hua Da Trading, Inc.
Lot / identifier
The source does not specify this field.
Market / distribution
The source does not specify this field.