DHA Supplement Manufacturer

The risk is treating two DHA percentages as the same raw material. For second-source projects, KS matches the replacement oil against the approved source, assay basis, molecular form, and finished-unit specification before substitution.

Fish oil

Fish body oil fits a conventional DHA-plus-EPA product and a set EPA:DHA ratio. The specification names species, tissue, origin, and whether the fish was wild or farmed. Anchovy, sardine, and pollock are the usual body oils. Tuna is used when the customer requests it. Liver oil is a separate specification from body oil. Cod liver oil also carries vitamins A and D.

“18/12” describes oil concentration, not the finished-unit DHA claim. It means approximately 18% EPA and 12% DHA by weight: about 180 mg EPA and 120 mg DHA per 1,000 mg of oil. It is a common description, not a universal grade. The finished-unit claim depends on the oil fill and the finished-product assay, not the trade shorthand alone.

High-DHA marine oil

This route fits a project that needs more DHA, less oil fill, and fewer or smaller softgels. The oil may be a fish concentrate or calamari (squid) oil specified upon customer request. Calamari is an alternative marine source, with DHA often the primary active and EPA still declared. A higher assay reduces fill weight and capsule size. For a quote comparison, compare DHA on the same assay basis and against the actual oil fill. The same percentage does not establish an equivalent raw-material cost when the source or the molecular form differs. Concentrate assays commonly start around 30% EPA/DHA and run higher.

Algal DHA

Algal oil fits a fish-free requirement. Schizochytrium sp. is a common commercial source and the default organism on our standard sourcing route. Crypthecodinium cohnii, and any other DHA-producing organism, is quoted when the customer requests it. Examples of commercial assay levels include 35%, 40%, 50%, and 60% DHA. High-oleic sunflower oil is a typical carrier: it changes potency and viscosity and counts in the fill. EPA is declared only when that strain produces it.

An algal source does not automatically support a vegan or fish-free claim on the finished unit. The carrier, antioxidants, flavors, shell, processing aids, cross-contact controls, and lot documents are part of that review.

Molecular Form

TG, rTG, and EE change the raw-material specification and the cost. The form is locked before supplier quotes are compared. Human studies have reported differences in EPA/DHA absorption among these forms, but the magnitude depends on formulation and study conditions. Krill oil is quoted separately on its phospholipid specification. A 500 mg softgel may declare about 30 mg DHA beside about 167 mg phospholipids, plus astaxanthin in micrograms.

Crude, refined, and winterized oils are not interchangeable. Each step changes what can be filled.

A concentration step changes potency, fill weight, and cost. Molecular distillation is one route, not the only one. A typical ethyl-ester route uses esterification so the fatty acids can be separated, then molecular or short-path distillation and fractionation to raise EPA and DHA. Optional re-esterification converts that ethyl ester back to rTG. The finished oil is then EE or rTG, so the molecular form has to be named on the quote.

Other claims, including non-GMO and traceability, require supporting lot documentation.

The risk is releasing a lot on the incoming oil COA. Oil-phase DHA for a brain health supplements line is released on the finished unit. Dry phosphatidylserine and ginkgo keep their own specifications.

Raw-material qualification. Source, identity, DHA and EPA assay with the method, molecular form, oxidation, and contaminants. Fish oils add heavy metals, dioxins, and PCBs.

Manufacturing control. An approved oil moves into the dosage form already checked for feasibility. Oxidation and packaging follow that approved specification.

Finished-product release. An incoming COA qualifies the raw material. Finished-unit testing determines whether the manufactured product meets its approved specification: declared DHA, and EPA when the label declares it, plus fill weight, seal integrity, disintegration, oxidation where specified, and microbiology. See how to read a COA.

Oxidation benchmark. The GOED voluntary monograph specifies a peroxide value at or below 5 meq/kg, a p-anisidine value at or below 20, and TOTOX at or below 26 for in-scope omega-3 oils. These are voluntary industry specifications, not universal statutory limits, and they are not a standing factory guarantee. The p-anisidine method does not apply to flavored oils. Phospholipid oils need the method confirmed before TOTOX is used.

Manufacturing operates under cGMP requirements. Applicable site certifications include ISO 9001, ISO 22000, HACCP, FSSC 22000, Halal, and Kosher. IFOS, MSC, and Friend of the Sea appear only when that lot carries them. Prescription omega-3 drugs, infant-formula registration, feed-grade algal biomass, and disease-treatment products are outside this scope.

A lower unit price is not an equivalent quote when DHA concentration, assay basis, molecular form, fill weight, or the finished-product specification differs. A named reference oil is checked on this table. It is not replaced by another DHA oil on the name alone.

The stage follows the brief. An open direction and a named oil are both workable starts. Each stage adds the lines the next quotation needs.

Is the shelf life of a bottled DHA oil the same after opening?
No. Sealed shelf life and in-use stability are different specifications. Once opened, oxygen exposure, temperature, headspace, and opening frequency can change the oil’s stability, so the in-use period has to be supported by the product and packaging specification.

Do triglyceride and ethyl ester percentages describe the same DHA?
No. DHA content and molecular form are separate specification fields. A COA has to identify the DHA assay basis and the oil’s molecular form before two suppliers can be compared.

What does a stability study add after the release peroxide value?
It shows whether peroxide value keeps rising under the labeled storage condition and the chosen pack, after the release sample has already passed.

How is a pediatric liquid dose defined?
The liquid is specified as DHA per milliliter, with the serving volume and the measuring device. The age group and the destination market are part of that specification.

What changes when algal oil replaces fish oil?
EPA may drop out, because many Schizochytrium oils are DHA-led, and strain replaces species. The carrier and the other excipients stay inside the claim review.