Warning letter · FDA Warning Letters, Historical Archive

Purple Biosciences, LLC: FDA Warning Letter 593772 (Jul 23, 2020)

Agency action: Jul 23, 2020Record ID: fda_warning_-0d98fefcc265b94e
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What happened

Original notice title

Purple Biosciences, LLC MARCS-CMS 593772, July 23, 2020

From the archived source record

A hangover is a sign or symptom of alcohol intoxication, a disease. Like all poisonings, alcohol intoxication causes dose-related dysfunctioning and damage, ranging from mild impairments to death. Alcohol intoxication causes temporary damage to brain function, causing impairments of judgment, attention, reflexes, and coordination. Therefore, alcohol intoxication meets the definition of disease in 21 CFR 101.93(g)(1) [see 65 Fed. However, even if your product labeling did not have therapeutic claims that make your product an unapproved new drug, your product could not be a dietary supplement, because it does not meet the definition of dietary supplement under section 201(ff) of the Act [21 U.S.C. § 321(ff)]. The violations cited in this letter are not intended to be an all-inclusive statement of violations that exist in connection with your products. You are responsible for investigating and determining the causes of the violations identified above and for preventing their recurrence or the occurrence of other violations. You should take prompt action to correct the violations cited in this letter. Failure to promptly correct these violations may result in legal action without further notice, including, without limitation, seizure and injunction. Within fifteen working days of receipt of this letter, please notify this office in writing of the specific steps that you have taken to correct the violations described in this letter and to prevent similar violations. If you believe that your products are not in violation of the Act, include your reasoning and any supporting information for our consideration.

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
Historical warning letter; closeout not established by annual index
Source checked
Jul 16, 2026
Record revision
c1b4bfb97d2c

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
Say Goodbye to Hangovers . . . SHOP NOW; Purple Tree – Supplement for Hangover Prevention; Purple Tree Hangover Cure & Prevention Pills; Purple Tree® product; Purple Tree
Company
Purple Biosciences, LLC
Lot / identifier
The source does not specify this field.
Market / distribution
The source does not specify this field.