Free Guide
5 Red Flags to Avoid
When Buying Supplements
A quick checklist to spot low-quality supplement marketing before you spend a cent — based on the same criteria we use in every review.
Get This Checklist (and Future Ones) by Email
Save this guide and get notified when we publish new evidence-based supplement reviews. No spam.
No spam. Unsubscribe anytime.
You're In!
Check your inbox in the next few minutes for your checklist.
Proprietary Blends With No Doses Listed
If a label says "Proprietary Blend: 500mg" and then lists ten ingredients underneath with no individual amounts, you have no way of knowing whether you're getting a clinically meaningful dose of the active ingredient — or a token sprinkle of it next to nine cheap fillers.
Legitimate manufacturers disclose exact amounts per ingredient. If a brand won't show you the numbers, assume the numbers don't support their marketing claims.
Quick check: Search the label or product page for "mg" or "mcg" next to every single ingredient. No numbers, no deal.
Miracle Language: "Cure," "Reverse," "Guaranteed"
No legitimate supplement can legally claim to cure, treat, or reverse a disease — the FDA prohibits it, precisely because it's usually not true. Words like "cure," "melts away," or "guaranteed results" are a marketing shortcut around the actual clinical evidence.
Solid brands talk about "supporting," "promoting," or "helping maintain" a function — because that's what the underlying research can actually back up.
Quick check: If the sales page reads like a miracle cure, close the tab. Real results take weeks, not "3 days."
No Third-Party Testing or GMP Certification
GMP (Good Manufacturing Practice) certification means an independent body has verified the facility follows quality and safety standards. Third-party lab testing verifies the bottle actually contains what the label says — and nothing it doesn't.
Supplements are far less regulated than medication before they hit the shelf. Certification is the closest thing you get to a quality guarantee.
Quick check: Look for "GMP Certified," "Third-Party Tested," or a Certificate of Analysis (COA) on the product page.
Fake Urgency and Scarcity Timers
Countdown timers that reset when you refresh the page, "only 3 left in stock" banners that never change, and "price goes up at midnight" warnings that repeat every day are classic pressure tactics — designed to stop you from comparing prices or reading reviews.
A supplement that's genuinely good doesn't need a fake clock to convince you today.
Quick check: Refresh the page. If the countdown resets, it's not real urgency — it's a script.
Testimonials With No Way to Verify Them
Stock photos labeled with a first name and last initial, before/after images with no dates, and reviews that all use suspiciously similar phrasing are a sign that a brand is manufacturing social proof instead of earning it.
Genuine reviews are messy — mixed ratings, specific details, occasional complaints. A page with only five-star reviews and identical writing style is a red flag, not reassurance.
Quick check: Search a testimonial's exact phrase in quotes on Google. If it shows up word-for-word on other unrelated product pages, it's fabricated.
Want the research already done for you?
We independently review and rank health supplements against exactly these criteria — clinical evidence, transparent labeling, and real manufacturer accountability.
Browse Our Reviews