Insights
The rules that decide your product, in plain English.
Plain-English reads on the regulatory questions behind a regulated product — supplements, OTC drugs, food, cosmetics — each traced to the real rule and the real enforcement, not a template.
NSF/ANSI 455-2 System Assessment 4
How do I know if the quality system I already wrote will survive an audit?
A GMP audit checklist names the clauses. It cannot tell you whether your records show the procedure happening. The audit's own steps can, run early.21 CFR 111 · 21 CFR 117 · NSF/ANSI 455-2How do I tell whether my contract manufacturer is genuinely compliant rather than just holding a certificate?
A GMP certified contract manufacturer may still be a real risk. Here is what the certificate proves, what it never covers, and what to ask for instead.21 CFR 101 · 21 CFR 111 · 21 CFR 117What actually gets written up in a GMP audit, and how serious is it?
GMP audit findings are classified by one auditor's judgment, then re-read by a reviewer who was not there. An FDA inspection is a different record.21 CFR 111 · 21 USC Subchapter II · 21 USC Subchapter IIIWhat does getting GMP certified actually cost, and how long does it take?
GMP certification cost is not published by any certification body. Here is what sets the audit days, the clock the standard runs, and what you control.21 CFR 111 · NSF/ANSI 455-2Classification & Viability 3
Does this requirement actually apply to my product?
Does this requirement apply to my product? The answer is in the part's own scope section, and 21 CFR 111, 117 and 211 each say who they reach.21 CFR 111 · 21 CFR 117 · 21 CFR 211Is my product a cosmetic or a drug, a supplement, or a food?
Cosmetic or drug, supplement or food? Your category is set by your claims, your customers' perception and your ingredients. Here is how FDA draws the line.21 CFR 101 · 21 CFR 201 · 21 CFR 210Will this claim make my product a drug?
Will this claim make my product a drug? Which of two clauses in the drug definition it lands in decides that, and only one of the two has any way out.21 CFR 101 · 21 CFR 201 · 21 USC Subchapter IIProduct Labels 3
Is my supplement label missing anything FDA requires?
A checklist reads the panel. FDA's inspection record carries zero citations on the panel rules and 1,108 across the clauses that govern label control.21 CFR 101 · 21 CFR 111 · 21 USC Subchapter IVWho is supposed to build the label content, me or my manufacturer?
Who is responsible for label content when a contract manufacturer makes your product? No federal rule assigns the writing. Your contract does. Here is why.15 USC 1451 · 21 CFR 101 · 21 CFR 111Who checks my label before it becomes a problem, and can I trust whoever does it?
Who checks my label before it ships? Three checks in 21 CFR 101 and 111 are defined, each against its own benchmark, and none reads the whole label.21 CFR 101 · 21 CFR 111 · 21 CFR 701Quality Agreements 3
Do I need a quality agreement, or does my supply contract already cover quality?
Quality agreement vs supply agreement: no federal rule names one. FDA's guidance is drug CGMP only and excludes supplements. Here is what binds you.21 CFR 111 · 21 CFR 117 · 21 CFR 210Does a quality agreement actually protect me, or am I still on the hook if my manufacturer fails?
Quality agreement liability, read from the statute: signing one does not move who FDA acts against. Here is what stays with you when your maker fails.21 CFR 1 · 21 CFR 111 · 21 CFR 117When something goes wrong with the product, who is actually on the hook — the brand or the manufacturer that made it?
Brand or manufacturer responsibility, read from the statute: federal law reaches both of you, by the acts each performs. Here is which duty lands where.21 CFR 1 · 21 CFR 111 · 21 CFR 117Cleaning Validation 2
Will my cleaning validation survive an inspection, and where is the hole?
Cleaning validation FDA inspection: no US rule makes you validate a cleaning procedure. Of 6,940 cleaning observations FDA wrote, not one names validation.21 CFR 111 · 21 CFR 117 · 21 CFR 211Is my cleaning acceptance limit defensible, or do I need health-based limits instead of 10 ppm?
Your cleaning validation acceptance limit: 10 ppm and HBEL both come from drug GMP. 21 CFR 111 sets no residue number and asks for your written basis.21 CFR 111 · 21 CFR 117 · 21 CFR 211Cosmetic Safety Substantiation 2
Are cheap or template cosmetic safety reports valid?
A template cosmetic safety report is not invalid because it was cheap. What decides it is which market judges it and what the report was written from.21 USC Subchapter II · 21 USC Subchapter III · 21 USC Subchapter VIDo I need a safety file to sell my cosmetic, and does the small business exemption cover me?
MoCRA puts the cosmetic safety file on whoever's name is on the label. The small business exemption removes two sections, and this is not one of them.15 USC 1451 · 21 CFR 701 · 21 USC Subchapter IIEnvironmental Monitoring 2
The same spot keeps coming back. Where is it hiding, and how do I make it stop?
The same swab site keeps going positive. Here is where Listeria harborage hides, why re-cleaning never clears it, and what 21 CFR 117 asks of you next.21 CFR 111 · 21 CFR 117 · 21 CFR 211How do I justify my sampling plan and frequency to an auditor?
Your environmental monitoring sampling plan is judged by one test in the rule: adequate to determine whether preventive controls are effective. Here is how.21 CFR 117Equipment Qualification 2
An audit or a 483 is demanding our full equipment qualification package — what has to be in it?
An audit or a 483 wants your full equipment qualification package. No US rule lists the contents. Here is what has to be in it, and what gets sent back.21 CFR 111 · 21 CFR 117 · 21 CFR 211How often do we have to requalify, and how do we keep equipment in a qualified state?
Equipment requalification has no federal interval. Of the provisions read here, seven use the word and only one is law, about suppliers. Here is what binds.21 CFR 106 · 21 CFR 111 · 21 CFR 117Process Validation 2
What is continued process verification, and how do I set one up and react to what it shows?
Passing PPQ is not the end. Continued process verification is the ongoing loop: what 21 CFR 211.110 and 117.165 ask for, what to watch, and how to react.21 CFR 111 · 21 CFR 117 · 21 CFR 211How many PPQ batches are actually required, and how do I defend the number I picked?
How many PPQ batches? No US regulation names a number. The drug rule asks you to validate process performance; the three-batch guide comes from ICH Q7.21 CFR 10 · 21 CFR 106 · 21 CFR 111Specifications 2
The rule says establish specifications but gives no numbers. What do I actually put?
21 CFR 111.70 tells you to establish specifications and gives no numbers. Here is where each limit legitimately comes from, and what FDA actually cites.21 CFR 101 · 21 CFR 111 · 21 USC Subchapter IVIs setting the specification my manufacturer's job, or mine?
Who is responsible for the specification if a contract manufacturer makes your supplement? 21 CFR 111 splits the duty by what each of you actually does.21 CFR 111 · 21 CFR 117 · 21 USC Subchapter IIIStability 2
How do I set up a stability study — how many batches, which conditions, how many time points?
Stability study design, settled: how many batches, which storage conditions and how many time points, and which rule or standard really sets them for you.21 CFR 111 · 21 CFR 117 · 21 CFR 211Do I need a real-time stability study, or is accelerated data enough?
Under the drug rule accelerated data supports only a tentative date; a real-time stability study confirms it. Supplements and cosmetics: no federal rule.21 CFR 106 · 21 CFR 107 · 21 CFR 111Method Validation 1
Premarket Safety Filing 1
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