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Wholesale phosphatidylserine quotes can look simple until you turn the price into a capsule. A powder sold at 20% phosphatidylserine takes up 500 mg of fill to supply 100 mg of active phosphatidylserine. A 50% powder takes 200 mg. That difference can decide whether your blend fits in one capsule or needs two. The percentages in this example are for planning. Your actual formula depends on the grade you qualify and the assay basis on its certificate.
At Maxmedchem, we manufacture and supply supplement raw materials. When you request bulk phosphatidylserine powder, tell us your target milligrams of active material, the space you have left in the capsule, and the source you can accept. Those details make a quote far more useful than a price per kilogram by itself.
Wholesale Phosphatidylserine Starts With the Active Amount
Read the assay line before you compare grades
Phosphatidylserine, often called PS, is a phospholipid, a type of fat found in cell membranes. A commercial powder can include other phospholipids or ingredients added to help it flow. Ask for a PS-specific result and the test method. A total phospholipid result measures a broader group of compounds. A raw powder can meet that number while falling short of your PS target.
Ask whether the percentage is on an as-is or dry basis. If a powder has 20% PS on a dry basis and 5% moisture, each kilogram as delivered contains about 190 g PS under those assumptions. A buyer who uses 200 g in the yield calculation will plan for roughly 100 extra servings per kilogram at a 100 mg target. Ask your quality team to put the agreed calculation on the formula record.
Compare the source and the full composition
Specify your acceptable starting material, such as soy or sunflower lecithin. Ask for the identity of the carrier, an allergen statement, and an explanation of how the facility handles shared equipment. A sunflower starting material can simplify some purchasing decisions, but the full composition and cross-contact controls still matter for the label. Get those answers in writing before your brand promises a source or makes a claim about allergens.
Ask if the supplier can switch the source, carrier, or manufacturing site under the same grade name. Set a change notice for each of those items in your agreement. A different carrier can change the flow of the blend. A new site can require a separate review of the quality documents. Advance notice gives your team time to test the change before it affects an open production order.
Wholesale Phosphatidylserine Research and Claim Review
Read the population and outcome together
Kato-Kataoka and colleagues assigned 78 Japanese adults aged 50 to 69 with memory complaints to placebo, 100 mg of soy-derived PS daily, or 300 mg daily for six months [1]. The paper reported some memory findings in participants with lower scores at the start. Read the subgroup alongside the full sample and the exact tests used. The study tested a specific soy-derived ingredient in a defined group of adults.
A 2013 open-label pilot used 300 mg daily for 12 weeks in 30 older adults with memory complaints [2]. An open-label study tells participants they are receiving the ingredient. Without a placebo group, changes can reflect practice on a memory test, expectations, or other factors. Put the design in your evidence file along with the dose and duration.
Match your SKU to the evidence file
If your formula team chooses a different source or a different active amount, write those differences down. A sample certificate can confirm material identity and potency. Human research can address a measured outcome in the people studied. Marketing, purchasing, and quality should each sign off on the part they own before your label goes to print.
For a blend with several cognitive wellness ingredients, keep an evidence row for each one. Record the study source, active dose, population, outcome, and route. Then add a row for the finished blend. This shows your team where it has evidence for an ingredient and where it would need evidence on the final product.
Wholesale Phosphatidylserine Cost Per Usable Serving
Divide the landed price per kilogram by the PS fraction to get the cost per kilogram of active PS. At example prices of $40 per kilogram for a 20% powder and $90 for a 50% powder, the active costs are $200 and $180 per kilogram. A 100 mg active serving costs about 2 cents or 1.8 cents in raw PS before fill losses, testing, and packaging. Use the same delivered cost terms for both suppliers.
At 100,000 servings of 100 mg PS, you need 10 kg active before losses. The 20% example requires 50 kg of raw material. The 50% example requires 20 kg. If the line loses 2% of incoming powder, divide those starting figures by 0.98. That gives about 51.02 kg and 20.41 kg. Use your measured pilot yield to replace the example.
Check bulk density with the same method on both samples. A low-density powder can occupy more capsule volume even if it needs fewer milligrams per serving. Ask the contract manufacturer to run the full blend at the expected speed. Capture fill-weight variation at the start, middle, and end of the trial. Browse our dietary supplement ingredient range if you are sourcing the other components of that blend in parallel.
Wholesale Phosphatidylserine Documents and Purchase Terms
Request a signed specification, lot certificate, full composition, source and allergen statements, and storage guidance. Discuss metals, microbes, residual solvents where relevant, and any oxidation limits the supplier applies to the grade. Get test methods and acceptance limits agreed before receiving the first commercial lot. A data sheet that describes typical values leaves room for normal lot variation. Your written specification establishes the limits your quality team will use at release.
Ask the supplier how it protects the powder during shipment and what evidence supports the retest period. Then evaluate your own finished package. A supplier drum and a half-empty bottle have different exposure to air and moisture. If you expect a 60-day use period after opening, consider whether your test plan captures repeated opening in addition to sealed storage.
Align the minimum order with your run size and storage plan. Ask for a pilot sample from a lot that represents the intended commercial grade. Record the sample lot, then compare it with the first bulk lot before you authorize a repeat order. You can review Maxmedchem manufacturing and supply information when building your supplier file.
Ready to compare grades? Request a wholesale phosphatidylserine quote with your source preference, target PS per serving, capsule or sachet format, destination, pilot quantity, and annual volume. Ask us to identify the grade and assay basis on the quote so your teams can evaluate the same offer.
FAQs
How much 20% phosphatidylserine powder supplies 100 mg of PS?
At 20% as-is, 500 mg of powder supplies 100 mg PS. Confirm your grade and assay basis before setting the fill weight.
Is 50% PS always better for capsules?
It lowers raw powder weight for the same active dose. Confirm its volume, flow, carrier, and price in a pilot blend.
Can I swap soy-derived PS for sunflower-derived PS?
Treat the swap as an ingredient change. Review the source, allergen documentation, grade, test methods, evidence file, and pilot results.
What is the best way to compare a wholesale price?
Compare delivered cost per unit of active PS, then include line yield, test costs, pack size, and expected stock turnover.
Which certificate should I request first?
Ask for a certificate of analysis tied to the lot offered, plus the current signed specification. Compare the measured results with your agreed limits.
References
1. Kato-Kataoka A, et al. Soybean-derived phosphatidylserine improves memory function of the elderly Japanese subjects with memory complaints. J Clin Biochem Nutr. 2010. PMID 21103034. 2. Richter Y, et al. The effect of soybean-derived phosphatidylserine on cognitive performance in elderly with subjective memory complaints: a pilot study. Clin Interv Aging. 2013. PMID 23723695.
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