CBD oil has been around for centuries, it is not new; it's newly rediscovered. CBD oil is beneficial to both people and pets, but for right now, let's just focus on people. CBD oil has been know to help with pain, anxiety, neurological, heart-health, sleep, and gastrointestinal discomfort.
When it comes to choosing the right type of CBD oil for you, one of the most important—and most overlooked—factors is bioavailability, or how much of the CBD your body actually absorbs and uses. Most people assume that the dose on the label reflects the amount their body receives, but that number only tells part of the story. The delivery method, or how the CBD oil is crafted, is what determines how effectively CBD enters the bloodstream and begins working in the body. This is where UltraZwell’s water-based Raw or Lemon CBD oil stands far ahead of conventional oil-based formulations—and science shows exactly why.
Your Body's Metabolism.
Oil-based CBD is the most common format on the market. It suspends cannabidiol in a fat-based carrier such as MCT, coconut, or olive oil. While these products are popular and often taste pleasant, they come with a critical downside: poor absorption.
Because CBD oil is fat-soluble, it must pass through the digestive system and liver before reaching circulation—a process known as first-pass metabolism. During this process, up to 90% of the CBD is broken down or excreted before it can ever be used by the body. That means for every 25mg dose of an oil-based CBD, as little as 2 to 3mg may actually reach the bloodstream.
Water-based CBD oil – such as ultraZwell brand's Natural or Lemon flavor CBD Oil, solves this problem at the molecular level. Using a process called nanoemulsification, UltraZwell transforms CBD into ultra-small, water-compatible particles that dissolve easily and absorb quickly. These particles are measured in nanometers—thousands of times smaller than a red blood cell—which allows them to pass through biological membranes in the mouth and gut with far greater efficiency.
The result is a bioavailability of up to 94%, as measured in independent studies.
The Science Behind it.
This difference is not just theoretical. In human trials comparing oil-based and water-based CBD, plasma concentration of CBD was found to be significantly higher—and achieved much faster—when using nano-sized water-soluble formulations. Peak blood levels are typically reached in under 30 minutes, and the effects are more predictable, more consistent, and longer-lasting. With oil-based products, variability is common and onset can take hours. With water-based CBD, especially UltraZwell’s formulas, users report noticeable effects within minutes.
This superior absorption has practical benefits. First, it allows for lower doses with greater efficacy, meaning less waste and more predictable results. Second, it reduces the strain on the liver and digestive system by avoiding first-pass breakdown. Third, it creates a faster-acting product, which is especially valuable for those using CBD to manage stress, sleep issues, cognitive performance, or physical discomfort.
The Body's Makeup
It also aligns with basic human biology. Since over 60% of the human body is composed of water, it makes sense to deliver nutrients and plant compounds in a format the body is already optimized to receive. Water-based CBD doesn’t just perform better—it works in harmony with how the body naturally absorbs fluids and micronutrients.
Underwhelmed by CBD?
At UltraZwell, we don’t just follow trends—we follow the science. Our team has focused on optimizing every drop of our formula to ensure you're getting the maximum benefit from each dose. When we say our CBD absorbs up to 94%, it’s not a claim—it’s a clinically validated result, supported by data and felt by our customers every day. It's simple. The body quickly and efficiently absorbs our CBD Oil.
If you’ve tried CBD before and felt underwhelmed, there’s a good chance it wasn’t the CBD—it was the format. Discover the difference that real absorption makes. Explore UltraZwell’s water-based CBD lineup and experience wellness that works with your body, not against it.