Supplement Ingredient Safety: GRAS, Novel Foods, Toxicity Studies, and Health Canada Explained

Not every ingredient that is legal to sell has been checked the same way. Two powders can sit side by side on a supplier's shelf, both legal, and still have very different safety records behind them. When you source ingredients for a supplement or nutraceutical product, the terms people throw around (GRAS, novel food, tox tested, Health Canada) are not interchangeable. Each one answers a different question. Here is what each term means, in plain language, and where NuLiv Science ingredients land against that bar.

90-day toxicity studies: how much is safe over time

A 90-day toxicity study (you may also see it called a subchronic oral toxicity study) looks at what happens when a substance is taken every day for about three months. Researchers give the ingredient at several different doses and watch closely: body weight, blood work, organ weights, and changes in tissue under a microscope.

What they are looking for is the highest dose that causes no meaningful problem at all. That dose has a name: the No Observed Adverse Effect Level, or NOAEL. It becomes the starting point for setting a safe amount for human consumption, with a safety cushion added on top.

Most of these studies follow the same international method (OECD Test Guideline 408), so results from one lab can be compared fairly with results from another. A shorter 28-day version (OECD Test Guideline 407) usually runs first as an early check. The bottom line: when an ingredient has solid studies like these behind it, you are not guessing about its safety at your dose. You have the data.

GRAS: a US safety consensus for food ingredients

GRAS stands for Generally Recognized as Safe. It is a US category for substances added to food. An ingredient earns it when qualified experts, looking at the published science, agree it is safe for the way it will be used. The key word is agree. GRAS is about expert consensus, not a stamp placed on the ingredient by the government.

There are two ways to get there. In a self-determined GRAS (sometimes called self-affirmed), a company brings together a panel of independent experts to review the data and reach a conclusion. Their approval is not a given. Many are former FDA staff who now run their own consulting firms, and they put their professional reputation on the line every time they sign a report, so getting a full panel to agree can be tougher than clearing a government desk. The second way is a GRAS Notification, where the company voluntarily sends that same dossier to the FDA, which can reply with a letter saying it has no questions. That adds a layer of federal review on top.

One point that clears up a lot of confusion: GRAS is not the same as "FDA approved." The FDA does not approve GRAS ingredients. It reviews the notification and, if satisfied, says it has no further questions.

Novel foods: the highest safety bar a new ingredient can clear

In the European Union, novel food authorization is the toughest safety approval a brand-new ingredient can earn. It is not a badge a company buys for prestige. It is a required clearance, reviewed by the European Food Safety Authority (EFSA), that an ingredient must get before it can be sold in the EU at all, if that ingredient has no real history of being consumed in Europe. Ingredients with a long European track record skip this, because they are not considered new. For a genuinely new ingredient, though, nothing sits higher.

The idea behind the category is simple. A novel food is one without a real history of being eaten as food, or one made by a new process that meaningfully changes what it is. That history is the whole point: an ingredient people have safely eaten for generations is treated as lower risk, while something new to the food supply has to prove itself first. Regions run their own versions: the EU under Regulation (EU) 2015/2283 (EFSA reviews the safety, the European Commission grants the authorization), Canada through a pre-market notification to Health Canada, and the US through the New Dietary Ingredient notification for supplements.

Here is why it matters to the person taking the product. To grant authorization, a government authority takes the ingredient apart and studies all of it: what it is, what is in it, how it is made, how long people have used it, what it does nutritionally, and its full safety testing. Then it sets a safe intake level, with a big cushion built in.

A quick example shows how careful that cushion is. Say you are testing an apple extract. First it has to pass the basic safety checks, like whether it damages DNA or chromosomes. Then it goes through the 90-day study. Suppose the highest dose that caused zero problems works out to 100 mg for every kilogram of body weight, per day. EFSA does not simply hand that dose straight to people. It is divided by a large safety factor, often 200 to 1, to account for the differences between rats and humans and between one person and the next. That brings it down to 0.5 mg per kilogram of body weight. For a typical adult of about 70 kg (roughly 154 lb), that lands at 35 mg a day as the amount EFSA will call safe.

And that is only the first step. After EFSA publishes its opinion, the European Commission steps in and decides whether to actually grant the authorization. Start to finish, the process can take five to seven years. At any point, any of the 27 EU member states can raise an objection through its own health ministry. Because the process is so rigorous, most countries outside North America lean on EFSA's guidance for their own approvals. Clearing it is a serious thing.

Health Canada: the gateway to the Canadian market

Health Canada handles supplement ingredients through two doors. Most supplements are sold as Natural Health Products (NHPs). Each one needs a product licence and a Natural Product Number (NPN) before it can go on sale, and the ingredients in it are checked for safety, quality, and the evidence behind what they claim to do. Separately, an ingredient that counts as a novel food goes through a pre-market notification, and Health Canada issues a Letter of No Objection once it is satisfied the ingredient is safe.

This system is being updated right now, with changes to NHP labelling and a more risk-based approach rolling out through 2025 and 2026. Since the details are still moving, confirm the current rules for your specific ingredient before you build a timeline around them.

Informed Ingredient: a quality mark, not a safety study

Informed Ingredients are easy to file next to the safety terms above, but it answers a different question. It is a program run by LGC that tests raw materials for substances banned in sport. Certified ingredients get screened regularly at an accredited lab, and the tested lots are published. It matters most for sports nutrition, where a contaminated raw material can end an athlete's eligibility.

What it tells you is that the material has been checked for banned-substance contamination and made under good quality controls. What it does not tell you is whether the ingredient has a full safety file or a clear regulatory status. You really want both: a safety story (toxicity studies, GRAS, novel food clearance) and a quality story (banned-substance testing, good manufacturing practices). One does not replace the other.

Where AstraGin® stands

Explaining these terms is one thing. Clearing them is another. AstraGin®, our flagship extract of Panax notoginseng and Astragalus membranaceus that supports gut health and the absorption of amino acids, fatty acids, and other nutrients, is the ingredient we have taken the furthest:

• Self-affirmed GRAS in the United States.
• A Natural Product Number from Health Canada, which opens the Canadian market.
• Novel food status from EFSA, meaning a European authority reviewed the safety data and set safe use levels.

Behind all of that sits the toxicology. AstraGin® went through both a 28-day and a 90-day toxicity study in rats, plus genotoxicity testing (checks for DNA and chromosome damage). Together those produced a NOAEL and a wide safety margin for setting how much people can take.

Here is the part worth sitting with. A lot of supplement ingredients reach the market without any dedicated 28-day or 90-day toxicity study, because the rules do not always require one. We ran both for AstraGin® anyway, added the genotoxicity work, and went after GRAS, Health Canada, and EFSA review. That was a choice to go past the minimum, not just meet it, because the brand that formulates with the ingredient is putting its name on the label.

Batch testing: proven once versus proven in every lot

GRAS status, a novel food authorization, and a Health Canada NPN all prove one thing: that the ingredient, as tested, is safe. What they do not prove is that the specific drum showing up at your facility matches that tested material. That is a separate job, and it happens lot by lot.

Every batch of every ingredient we supply comes with a Certificate of Analysis (COA) that covers the things that matter for safety and identity. AstraGin® is a good example:

• Identity and strength, confirmed against a reference standard and standardized to its marker compounds (total saponin, for AstraGin®), so you know the material is the real thing and not a cheaper look-alike. In a market where botanical fraud is common, that is a safety check, not just a quality one.
• Heavy metals (arsenic, lead, mercury, cadmium), held to tight limits.
• A full microbial panel: total plate count, yeast and mold, E. coli, Salmonella, Listeria, Staphylococcus aureus, coliforms, and Enterobacteriaceae.
• Mold-related toxins (aflatoxins and ochratoxin A), screened to low limits.
• Residues: pesticides, glyphosate, leftover solvents, benzoic acid.
• Allergens, with gluten measured alongside the contaminant checks.

Some of this testing is done by an accredited, independent third-party lab (for example, each lot is screened for polycyclic aromatic hydrocarbons, contaminants that can form during processing), so the results do not rest on our own testing alone. The same discipline runs across our whole ingredient line, not just the flagship.

Standardization is what carries the safety data forward. A 90-day study or a GRAS conclusion only counts for a batch that matches the material that was studied. Because each lot is standardized and identity-confirmed, that safety file follows the drum into your hands instead of sitting frozen on a sample tested years ago. Each COA also carries manufacturing and expiration dates backed by stability testing, so you know the material holds up across its shelf life.

What a safety dossier does for your business

Let's be honest about who reads this. The person taking your finished product is not going to open a toxicology report. Very few shoppers picking up a preworkout or a BCAA check for GRAS status first. They buy on outcomes and quick trust signals: better absorption, backed by science, a name they have seen before.

The dossier is not written for them. It is written for you. It is what lets you justify paying more for a premium ingredient, defend the claims on your label, and cover your own liability when a retailer, a regulator, or a marketplace asks how you back up what you sell. It is also what turns a vague "backed by science" line into something real, because there is an actual file underneath it. Your customer feels the trust. You hold the proof that earns it.

The question to ask about the rest of your formula

If you hold AstraGin® to this standard, hold every other ingredient in your formula to it too. For each one, ask:

• Is there a defined NOAEL, with 28-day and/or 90-day toxicity data behind it?
• Has an outside body reviewed the safety, through GRAS, Health Canada, EFSA, or something equivalent?
• Can the supplier hand you that paperwork without a scramble?

Your customers are trusting the whole formula, not just the hero ingredient. If you cannot answer those questions for every part of it, that gap is worth closing before the product hits a shelf.

Want help reading an ingredient's dossier, ours or anyone else's? The team at NuLiv Science works with these documents every day and is glad to walk you through it.

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