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CL Answer

Is it true that NAC can help clear nasal passages?

Find out if N-Acetyl Cysteine (NAC) can help with post nasal drip & general sinus congestion and about supplements that may reduce cold symptoms.

Ill Woman in Bed Blowing Nose

Clinical Update

10/24/2023

Probiotics for Cough & Congestion?

Can taking a daily probiotic during cold season reduce cold symptoms such as runny nose, congestion, cough or fever? Find out what a recent study showed in the Cold and acute respiratory infections section of our Probiotics Supplements Review, which includes our Top Picks among probiotics.

CL Answer

Do diamine oxidase (DAO) supplements for histamine intolerance really work?

DAO supplement info for histamine intolerance, including diamine oxidase safety, evidence from clinical studies, and dosage.

Person in Pink Shirt Scratching Arm

Recalls & Warnings

September 28, 2022

FDA Warns Muscle Sports for Joint Health, Immune & Workout Supplement, Vitamin C, Elderberry, and Other Claims

On September 23, 2022, the FDA issued a warning letter to Muscle Sports Products, LLC following inspection of the company’s websites which found statements about company products, including Join Revolution Capsules, IMMUNITY + Powder, Rhino Rampage PUMPED Capsules, Attack Pre-Workout ...

Recalls & Warnings

December 14, 2023

FDA Warns Seller of Novid NASAL SPRAY for Allergy, Virus, and Cold Claims

On December 7, 2023, the FDA issued a warning to Novid Group, Inc. following an inspection of the company’s website, which found statements about the company’s novid NASAL SPRAY product to be drug claims.

Recalls & Warnings

September 01, 2020

Custom Nutraceuticals, LLC Warned for Manufacturing Violations

On August 6, 2020, the FDA issued a warning letter to Custom Nutraceuticals, LLC, following a facility inspection which found the company's products, including Thermal Revolution Black, Anabolic Blackout Raspberry Lemonade, Militia Re-COMP, and Rhino Rampage Wildberry to be ...

Recalls & Warnings

July 21, 2022

Young Living Warned for Promoting Essential Oils to Treat Seasonal Allergies, Kidney Stones & More

On June 10, 2022, the FDA issued a warning letter to Young Living Essential Oils Corporate after an inspection of the company’s website and social media found statements about the company’s essential oil and CBD products to be drug claims.

Recalls & Warnings

December 23, 2016

Twelve Sexual Enhancement Supplements Found to Contain Prescription Drug

On December 22, 2016, the FDA warned consumers not to buy or use the following twelve sexual enhancement supplements because they were found to contain undeclared sildenafil. Each was identified during an examination of international mail shipments. 

Recalls & Warnings

October 14, 2015

Recall of Male Enhancement Supplement Expanded

On October 9, 2015, TF Supplements expanded its previous recall of two lots of RHINO 7 sexual enhancement supplements, which were found to contain the undeclared drugs desmethyl carbondenafil and dapoxetine, to include all lots.

Recalls & Warnings

September 26, 2015

Male Enhancement Supplement Containing Antidepressant Recalled

On September 25, 2015, TF Supplements issued a recall of two lots of the sexual enhancement supplement RHINO 7, which were found to contain the undeclared drugs desmethyl carbondenafil and dapoxetine.

Recalls & Warnings

November 20, 2013

Three Sexual Enhancement Supplements Recalled

On November 16, 2013, Jobbers Wholesale issued a voluntary recall of sexual enhancement supplements Rhino 5 Plus, Maxtremezen, and Extenzone because they were found to contain the undeclared drugs desmethylcarbondenafil and dapoxetine.

Recalls & Warnings

January 13, 2019

Sexual Enhancement Supplement Recalled

On January 8, 2019, Happy Together, Inc. issued a recall of the sexual enhancement supplement Rhino 5k because FDA analysis found it to contain undeclared sildenafil and tadalafil.

Recalls & Warnings

December 21, 2019

Men's Enhancement Supplement Recalled

On December 17, 2019, Motto International Corp all lots of Bull Platinum 30000, Stallion Platinum 30000, Rhino 7 Platinum 30000, and Panther Platinum 30000, to the consumer leve because FDA analysis has found they contain tadalafil.

Recalls & Warnings

January 02, 2016

Fourteen Enhancement Supplements Found to Contain Undeclared Drugs

On December 28, 2015, the FDA warned consumers not to buy or use the following fourteen sexual enhancement supplements, which are sold on various websites and in some retail stores, because they were found to contain undeclared drugs :

Recalls & Warnings

April 14, 2018

Men's Sexual Enhancement Supplement Recalled

On April 12, 2018, AMA Wholesale Inc. recalled its sexual enhancement supplement Rhino 69 Extreme 50000 because it was found to contain undeclared tadalafil.

Recalls & Warnings

September 21, 2017

Sexual Enhancement Supplements Containing Prescription Drugs Recalled

On September 20, 2017, Gadget Island, Inc. Dba Gear Isle recalled the following supplements because they were found to contain undeclared sildenafil and tadalafil:

  • Rhino 7 Platinum 5000 capsules, Lot# R7-D5K1011H

Recalls & Warnings

July 18, 2017

Hidden Drugs Found in Sexual Enhancement Products

On July 17, 2017, the FDA posted public notifications after finding multiple sexual enhancement products contained hidden drug ingredients.

Recalls & Warnings

December 01, 2015

Enhancement Supplements Found to Contain Prescription Drug

On November 19, 2015, the FDA warned consumers not to buy or use the following sexual enhancement supplements, which were identified during an examination of international mail shipments, because they were found to contain undeclared sildenafil (click on the name of each supplement to read the ...

Recalls & Warnings

March 06, 2015

Nine Male Enhancement Supplements Found to Contain Drugs

On March 2 and March 3, 2015, the FDA warned consumers not to buy or use the following nine male sexual enhancement supplements because they were found to contain an undeclared sildenafil or vardenafil. Each was identified during an examination of international mail shipments.

Recalls & Warnings

November 01, 2016

FDA Warns Consumers Not to Use Twelve Energy and Sexual Enhancement Supplements

The FDA recently warned consumers not to buy or use the following "energy" and sexual enhancement supplements, which are sold on various websites and in some retail stores, because they were found to contain undeclared drugs: 

Recalls & Warnings

June 22, 2011

Recall of Calcium & Magnesium Softgels Containing Excessive and Potentially Toxic Amounts of Vitamin D

On or about June 7, 2011, NOW Foods announced the following recall to retailers. ConsumerLab.com was subsequently made aware of the recall by a ConsumerLab.com member.