Supplement Safety

Supplement Interaction Checker

Photograph a vitamin or herbal label. The checker flags drug–nutrient clashes, mega-doses, and proprietary blends.

Scan a supplement label

SafeShelf's free supplement interaction checker analyses any vitamin, protein powder, or herbal supplement label to detect drug interactions, mega-dose toxicity risks, low-quality fillers, and label transparency issues — free, no account needed.

Understanding Your Supplements

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Hyaluronic Acid Analysis

Understand oral dosages. Benefits include joint lubrication, skin hydration, and tissue repair (optimal dose: 80-200mg).

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Niacin Benefits Guide

Learn the difference between Niacin (causes flushing, good for cholesterol) and Niacinamide (no flush, good for skin).

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Drug Interactions

Detects critical conflicts like St. John's Wort + Birth Control, or Fish Oil + Blood Thinners.

Supplement Red Flags We Detect

The supplement industry is poorly regulated. Studies show 25% of supplements contain unlisted ingredients or don't match label claims. Here is what our AI looks for:

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Proprietary Blends & Mega-Doses:

"Proprietary blend" hides exact ingredient amounts, often using cheap fillers. We also flag dangerously high mega-doses (e.g., 50,000% DV) of fat-soluble vitamins (A, D, E, K) which can cause toxicity.

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Cheap Synthetic Forms:

We flag low-quality, poorly absorbed ingredients like cyanocobalamin (instead of bioavailable methylcobalamin) or magnesium oxide (instead of glycinate).

Upload a supplement label

Vitamins · protein powders · herbals

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Educational tool only — not medical advice

Results are generated by AI and are for informational purposes only. They do not constitute medical advice, diagnosis, or a substitute for a qualified healthcare professional. Do not start, stop, or change medications or diets based solely on this report. Always consult a doctor, pharmacist, or dietitian — especially if you are pregnant, have a medical condition, take prescription drugs, or are making decisions for a child.

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General scans are public by default

This scan and its results will be publicly accessible and may appear in the community gallery. Do not upload images containing personal or identifiable information. Want a private scan tailored to your health? Register free for personalised scanning →

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Frequently Asked Questions

What is a supplement interaction checker? ▾
A tool that reads vitamin, protein powder, and herbal labels for documented drug interactions, mega-doses, fillers, and label transparency issues. Confirm every interaction with a pharmacist.
How does the supplement interaction checker detect drug interactions? ▾
It flags documented clashes such as Warfarin + vitamin K1 and SSRIs + St. John's Wort. It is not exhaustive. Confirm every interaction with a pharmacist or doctor.
Why do niacin supplements cause flushing? ▾
Niacin (nicotinic acid) dilates blood vessels. Niacinamide does not. The checker identifies which form is on the label.
Can supplements interact with prescription medications? ▾
Yes. Examples include St. John's Wort reducing contraceptive and antidepressant effect, vitamin K1 antagonising Warfarin, and high-dose vitamin E increasing bleeding risk. Always check with your prescribing doctor or pharmacist.
Are all protein powders safe? ▾
No. Independent tests have found heavy metals in some powders. The checker flags proprietary blends, missing third-party certifications, and suspicious additives. It cannot assay the powder itself.
Is the supplement checker free? ▾
Guests get 2 free scans per day. A free account raises that to 5. Checking your own medication list requires Pro. See plans.

Scan a supplement label on this page

Free daily quota. Pro checks the same label against your prescriptions.

Scan a supplement label Pro from $59.99/year