Prodose, Inc. formerly known as Spirit Pharmaceuticals LLC
FDA issued a warning letter to Prodose, Inc. formerly known as Spirit Pharmaceuticals LLC (Ronkonkoma, NY, United States) on Mar 28, 2025, citing 21 CFR 207.49, 21 CFR 207.57 and 21 CFR 207.33. Subject: Electronic Drug Registration and Listing System (eDRLS), Violations.
From the letter: “A review of the listing for Maximum Strength Nighttime Sever Cold and Flu, NDC 68210-4210, reveals that the strength of the active ingredient, doxylamine succinate, does not match between the labeling and the structured product labeling…”
FDA published a close-out letter on May 22, 2025. The findings below are from the original warning letter.
At a glance
What a reviewer notes before reading: findings, citations, the response deadline and what the letter warns of.
- Violations
- 2 findings · 1 issue type
- Response due
- 15 working days after receipt of this letter
- FDA asks for
- 4 actions
- Named as possible actions
- Seizure, injunction
- Issued by
- Center for Drug Evaluation and Research
- Published status
- Close-out May 22, 2025
AI assisted findings
Model-assisted reading of each issue. Open one to see the FDA text it comes from, and check it against the full letter.
01Registration, listing & premarket · 21 CFR 207.49(a)(4)The strength of doxylamine succinate in the labeling (6.25 mg) does not match the strength listed in the SPL basis of strength field (redacted).
A review of the listing for Maximum Strength Nighttime Sever Cold and Flu, NDC 68210-4210, reveals that the strength of the active ingredient, doxylamine succinate, does not match between the labeling and the structured product labeling (SPL) sections of the listing submission. Specifically, in the labeling, the strength of the active ingredient, doxylamine succinate, is stated as 6.25 mg however, in the SPL’s basis of strength field, the strength of doxylamine succinate is listed as (b)(4)
02Registration, listing & premarket · 21 CFR 207.49(a)(4)The product name in the listing does not match the labeling; 'severe' is misspelled as 'sever' in the listed name.
Additionally, the name in the product listing does not match the name on the product labeling. Specifically, while the proprietary name on the principal display panel image is Maximum Strength Nighttime Severe Cold and Flu, in the listed name, the word “severe” is spelled as “sever.”
What FDA requested
- Notify FDA in writing, within 15 working days of receipt of this letter, of the specific steps you have taken to address any violations.
- Include an explanation of each step being taken to prevent the recurrence of violations, as well as copies of related documentation.
- If you cannot complete corrective actions within 15 working days, state the reason for the delay and the time within which you will do so.
- If you believe that your products are not in violation of the FD&C Act, include your reasoning and any supporting information for our consideration.
FDA Warning Letter
20 paragraphs · 3 sectionsText as published on FDA.gov, retrieved Sep 8, 2026. Layout added for reading; the wording is FDA’s. View on FDA.gov (opens in a new tab)
1Introduction
2 paragraphs
This letter concerns your firm’s drug listing information provided to FDA’s electronic Drug Registration and Listing System (eDRLS) for your drug product, Maximum Strength Nighttime Sever Cold and Flu, NDC 68210-4210.1 FDA has previously communicated to Spirit Pharmaceuticals LLC (“Spirit”) that this drug product is not properly listed. Refer to correspondence sent to Spirit on March 30, 2023.2
We reiterate that your firm has not fulfilled its listing obligations under section 510(j) of the Federal Food, Drug, and Cosmetic Act (FD&C Act), 21 U.S.C. 360(j), which is a prohibited act under section 301(p) of the FD&C Act, 21 U.S.C. 331(p). These violations are described in more detail below.
2Drug Listing Violations
3 paragraphs
Section 510(j) of the FD&C Act, 21 U.S.C. 360(j), and 21 CFR Part 207 outline the requirements for registration and listing of drug products. Under 21 CFR 207.49(a)(4), a firm must include in the listing submission to FDA, among other requirements, the name and quantity of each active pharmaceutical ingredient in the listed drug. A review of the listing for Maximum Strength Nighttime Sever Cold and Flu, NDC 68210-4210, reveals that the strength of the active ingredient, doxylamine succinate, does not match between the labeling and the structured product labeling (SPL) sections of the listing submission. Specifically, in the labeling, the strength of the active ingredient, doxylamine succinate, is stated as 6.25 mg however, in the SPL’s basis of strength field, the strength of doxylamine succinate is listed as (b)(4) Additionally, the name in the product listing does not match the name on the product labeling. Specifically, while the proprietary name on the principal display panel image is Maximum Strength Nighttime Severe Cold and Flu, in the listed name, the word “severe” is spelled as “sever.”
Therefore, your firm has not fulfilled its listing obligations under section 510(j) of the FD&C Act, 21 U.S.C. 360(j), which is a prohibited act under section 301(p) of the FD&C Act, 21 U.S.C. 331(p). In addition, Maximum Strength Nighttime Sever Cold and Flu, NDC 68210-4210, is not properly listed with FDA causing it to be a misbranded drug under section 502(o) of the FD&C Act, 21 U.S.C. 352(o). Introduction or delivery for introduction of such a product into interstate commerce is prohibited under section 301(a) of the FD&C Act, 21 U.S.C. 331(a).
Complete, accurate, and up-to-date establishment registration and drug listing information is essential to promote and protect patient safety. FDA relies on establishment registration and drug listing information for several key programs, including drug establishment inspections, supply chain security, and post-market surveillance. Drug registration and listing information is also widely used outside FDA for purposes such as electronic prescribing and electronic health records, insurance reimbursement, and patient education. We note that this warning letter only addresses registration and listing issues associated with your product.
3Conclusion
4 paragraphs
This letter is not intended to be an all-inclusive statement of violations that may exist in connection with your products. You are responsible for investigating and determining the causes of any violations and for preventing their recurrence or the occurrence of other violations. It is your responsibility to ensure that your firm complies with all requirements of federal law, including FDA regulations.
This letter notifies you of our concerns and provides you an opportunity to address them. Failure to adequately address this matter may result in legal action including, without limitation, seizure, and injunction.
Please notify FDA in writing, within 15 working days of receipt of this letter, of the specific steps you have taken to address any violations. Include an explanation of each step being taken to prevent the recurrence of violations, as well as copies of related documentation. If you cannot complete corrective actions within 15 working days, state the reason for the delay and the time within which you will do so. In absence of a corrective action, the deficient listing data will not be available for certification under 21 CFR 207.57(b)(2) requirements and will be ultimately inactivated by FDA. If you believe that your products are not in violation of the FD&C Act, include your reasoning and any supporting information for our consideration.
Your response should be sent to U.S. Food and Drug Administration, Center for Drug Evaluation and Research/Office of Compliance/Office of Unapproved Drugs and Labeling Compliance by e-mail to eDRLS@fda.hhs.gov. Please be aware that a manual override may be required for certain types of revisions made to an existing drug listing file. If you receive a validation error or have any questions regarding the contents of this letter, please contact us at eDRLS@fda.hhs.gov for further assistance. Include the case identification numbers (2851), (CMS 654751) on all correspondence.
Citations and trends
Each 21 CFR section, ISO 13485 clause and issue type in this letter, how often it appears across all letters, and its trend by the year FDA issued the letters. 2026 runs to Nov 3, 2026, compared with the same dates last year. Select a row or a bar to see those letters in Letters. As cited in this historical letter, not a statement of current requirements.
Regulations
Also cited: 21 CFR 207
Issue types
Record details
- Issuing center
- Center for Drug Evaluation and Research
- Issuing office
- Center for Drug Evaluation and Research
- Location
- Ronkonkoma, NY, United States
- Letter posted date
- Apr 29, 2025
- Letter issue date
- Mar 28, 2025
- Addressed to
- Not recorded
- Inspection dates
- Not recorded
- Response window
- 15 working days after receipt of this letter
Read the source clause
Please notify FDA in writing, within 15 working days of receipt of this letter, of the specific steps you have taken to address any violations.
- Record length
- 990 words · 2 recorded redactions
- Published status
- Close-out published May 22, 2025
- FDA reference
- 654751
- Original letter
- View on FDA.gov (opens in a new tab)
- Dataset last checked
- Nov 11, 2026 · How this is built
A response window is not a calculated due date. Source excerpts are selected passages. Finding interpretations and categories are model-assisted. Verify the original letter before relying on a finding.