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Why We Chose Hard Capsules Over Tablets for Our New Nattokinase + CoQ10 Blend

OEM / Private LabelGuides新着情報

2026.04.01

In the world of nutraceutical development, choosing the right delivery system is just as critical as the ingredients themselves.


Over the past two weeks, we have been working closely with our manufacturing partner—a leading listed company in Japan—to finalize the formulation for our next-generation Nattokinase supplement. Our goal was ambitious: to combine high-potency Nattokinase with CoQ10 and L-Citrulline for a comprehensive cardiovascular solution.

 

[caption id="attachment_5505" align="alignnone" width="920"]Japanese lab professionals researching Nattokinase and CoQ10 supplement stability We work closely with leading Japanese manufacturers to ensure premium product quality.[/caption]

 

However, real-world manufacturing often presents technical hurdles that theory cannot predict. After a deep dive with the R&D team, we have officially decided to move forward with a Hard Capsule solution. Here is why this is the "gold standard" for high-potency enzyme blends:


1. Preserving Bioactivity (The Temperature Factor)

Nattokinase is a sensitive enzyme. The process of tablet compression generates significant heat and physical pressure, which can compromise the delicate molecular structure of the enzyme. To ensure Zero Loss in Nattokinase activity during production, hard capsules are the superior choice. We want every milligram of activity (FU) promised on the label to reach the consumer.

2. Maximizing "Hero" Ingredients

When formulating with CoQ10 in soft gels, you often need an oil carrier that can take up to 70% of the capsule's volume. This severely limits the dosage of the actual active ingredients. By utilizing hard capsules, we eliminate unnecessary fillers and oil carriers, allowing us to maximize the concentration of the "hero" ingredients you actually want.

3. Stability and Speed-to-Market

[caption id="attachment_5506" align="alignnone" width="1024"]AFC Japan Factory Nattokinase formulation stability test showing 25 percent stability gain Our collaboration with AFC Japan Factory resulted in a 25% stability gain for our new formulation.[/caption]

 

While film-coated tablets are an option, they often lead to excessive lead times and massive Minimum Order Quantities (MOQs) due to the complexity of the coating process. Hard capsules offer the best balance of long-term stability, cost-efficiency, and a faster timeline for our global partners to get the product to market.
Real Innovation is About the Right Vehicle
We believe in sticking to the science. Sometimes, progress isn't about forcing a formula into a specific shape; it’s about choosing the right vehicle for the right ingredient to ensure maximum efficacy.

At SJK Co., Ltd., we don't just manufacture supplements; we provide manufacturing insights that help our clients avoid costly mistakes and deliver products that actually work.