Can I say it?
Can I say “100% guaranteed” in a clinic ad?
Usually no. 3 rules fired across 3 sample sentences, and the checker's own text explains why.
The short answer
Usually no. The checker blocks the bare phrase in this setting. The first rule it hits is CG-ABS-002. Its reason: A 100 percent claim is an absolute claim that almost never has support.
Source the rule cites: FTC Act section 5; FTC Health Products Compliance Guidance
Checked as an ad promoting a clinical service.
A clear result is not an all-clear. The checker flags wording for review and does not know your evidence, your state or your platform's review. Read the limitations.
Sample wording, run through the checker
These are sentences written to contain the phrase, not real claims. Each ran through the real engine and the shipped rule-set when this site was built.
100% guaranteed or your money back.
- Blocking
CG-ABS-002Absolute promises. Matched: “100%”
Our weight loss plan is 100% guaranteed.
- Blocking
CG-ABS-002Absolute promises. Matched: “100%” - Warning
CG-ABS-001Absolute promises. Matched: “guaranteed” - Warning
CG-PLT-012Platform policy. Matched: “weight loss”
100% guaranteed to work.
- Blocking
CG-ABS-002Absolute promises. Matched: “100%” - Warning
CG-ABS-001Absolute promises. Matched: “guaranteed”
What to say instead
This version came back with no rule fired:
Book a visit to hear what the plan involves and what to expect.
What the rules themselves suggest:
- CG-ABS-002 Replace with the measured figure and its source, or remove the number.
- CG-ABS-001 Remove the guarantee. If you offer a refund policy, describe the policy ("30-day refund if you are not satisfied") instead of guaranteeing results.
- CG-PLT-012 Describe the clinical service (nutrition counselling, metabolic health visits) without weight-loss outcomes, or get Pinterest approval as a healthcare advertiser first.
The rules behind this answer
Reason, source and citation for each rule that fired, in the checker's own words. Blocking rules come first.
CG-ABS-002 · Blocks approval
A 100 percent claim is an absolute claim that almost never has support.
Source: FTC Act section 5; FTC Health Products Compliance Guidance
Safer wording: Replace with the measured figure and its source, or remove the number.
See source text · Needs counsel review
CG-ABS-001 · Warns · Citation checked against stored text
Outcome guarantees are unsubstantiated absolute claims.
Source: FTC Act section 5, 15 U.S.C. 45; FTC Health Products Compliance Guidance
Safer wording: Remove the guarantee. If you offer a refund policy, describe the policy ("30-day refund if you are not satisfied") instead of guaranteeing results.
15 U.S.C. 45 · Needs counsel review
CG-PLT-012 · Warns · Citation checked against stored text
Pinterest allows no weight loss language or imagery in ads, with the exception of approved healthcare advertisers promoting prescription GLP-1 medication in the US and Canada. It also bars references to BMI, testimonials about weight loss, and weight loss procedures.
Source: Pinterest Advertising Guidelines (weight loss products and services)
Safer wording: Describe the clinical service (nutrition counselling, metabolic health visits) without weight-loss outcomes, or get Pinterest approval as a healthcare advertiser first.
Pinterest Advertising Guidelines
Background: Typical results disclosure in the glossary.
Questions
Which rule covers absolute guarantees?
Rule CG-ABS-002. The rule's reason: A 100 percent claim is an absolute claim that almost never has support.
What should I write instead?
The rule's own suggestion for rule CG-ABS-002: Replace with the measured figure and its source, or remove the number.
If the checker shows nothing, can I publish?
No. A clean result means none of the checker's rules matched. It does not weigh your evidence, your state or your platform's review, and it is not legal advice. Read the limitations page for what it misses.
Next step
Check your own wording
Paste your copy into the free checker. Every flag names its rule and its source.