Supplements are the most concern-dense category we certify. A vitamin tablet with six actives can carry thirty ingredients once excipients, coatings and flow agents are counted, and a striking share of them are animal-derived by default. That makes supplement certification more involved than most food — and it is also why kosher certification is worth disproportionately more in this category, because a great many competing products cannot get it.
The checkpoints, in the order they cause problems
Capsule and softgel shells
The single biggest issue. Standard gelatin capsules and softgel shells are made from bovine or porcine hide and bone, and porcine is common. This is usually the first thing we look at and frequently the thing that decides whether a product can be certified as formulated.
The alternatives are well established: HPMC (vegetarian capsules), pullulan, and for softgels, various non-gelatin systems. Fish gelatin exists and carries its own considerations. If you are formulating a new product and kosher certification is in your plans, choosing a shell at the start is vastly cheaper than requalifying one later.
Glycerin
Present in softgels, gummies, tinctures, liquids and coatings, and derived from either animal fat or vegetable oil. The name on your spec sheet will say “glycerin” either way. This requires a supplier letter, not an assumption.
Magnesium stearate and stearic acid
In practically every tablet and capsule as a flow agent, and animal- or vegetable-derived. Vegetable-sourced material is widely available, but it must be specified and documented — your supplier may switch source without telling you, since functionally it makes no difference to them.
The actives themselves
- Vitamin D3 is commonly derived from lanolin. Lichen-derived D3 is the usual alternative.
- Omega-3 and marine oils depend on species — kosher fish require fins and removable scales, which rules out several common sources. Algal oils sidestep the question.
- Chondroitin, collagen, glucosamine are animal-derived, frequently from non-kosher sources including shellfish.
- Amino acids vary by production route; some are fermentation-derived and straightforward, others are not.
- Enzymes and probiotics depend on the growth medium, which is often dairy.
- Whey and dairy actives are kosher but will make your product dairy — which matters commercially far more than most supplement brands expect.
Everything that is not an active
Coatings, glazes, binders, disintegrants, colours and flavours. Shellac and confectioner’s glaze are insect-derived. Carmine is insect-derived and not kosher. Flavour systems carry their own sub-ingredients. Gummies bring gelatin back in unless pectin-based.
The pareve question is a commercial one
Worth pulling out, because supplement brands routinely under-weight it.
A protein powder containing whey is dairy, and will be designated dairy. That is correct and unavoidable — but it narrows your market, because a dairy designation excludes your product from part of the day for observant customers and signals dairy content to the much larger group of shoppers using the designation as a dairy-avoidance check.
Plant-protein products can be pareve, and that is a genuine commercial advantage — but only if the equipment supports it. A plant protein made on a line that also runs whey will be designated dairy equipment and cannot be sold as pareve. In a contract-manufacturing category where shared equipment is the norm, this is worth establishing before you commit to a facility. More on what pareve requires.
Contract manufacturing
Most supplement brands do not own their plant, which shapes how certification works. Certification follows the production, so the facility making your product needs supervision, while you as brand owner hold the consumer-facing certification.
Practical consequences:
- If your contract manufacturer is already certified, you are most of the way there.
- If not, they need to be — which is a conversation with them, and one they may welcome, since it makes them eligible for other certified brands too.
- If you use multiple facilities, each needs covering.
- Changing manufacturer means updating your certification. Tell us before you move, not after.
More on how co-packing arrangements are structured.
Why certify a supplement
Three reasons, and the third is the one people miss.
Retail requires it. Grocery, pharmacy and many natural channels treat the symbol as a vendor condition.
The category over-indexes. Supplement buyers are already reading labels for sourcing and purity. A kosher symbol lands on an audience primed to care about exactly that, and a large share of those shoppers have no religious interest in it at all.
Many competitors cannot get it. Gelatin shells, lanolin D3 and animal stearates are the default in this category. A brand that has done the formulation work to be certifiable has a credential a competitor cannot match without reformulating — which is slower and more expensive than they will want.
Where to start
Send us your full formulation — actives, excipients, shell, coating, flavours and all. We will tell you which items need tracing, which will need substituting, and what your likely designation is, before you commit to anything.
If you are formulating something new, talk to us at the formulation stage. Choosing a capsule shell, a glycerin source and a stearate source correctly at the start costs nothing; changing them afterwards costs a requalification.
Get a free quote, or see how we certify supplements by product type.