CBD Oil Absorption

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Getting the most out of your CBD is essential for a variety of reasons. The first being it is expensive. Buying CBD oil can cost upwards of 100 dollars for a 30ml bottle. If you are using CBD daily (which we highly recommend), this becomes a monthly expense. Another reason is you want as much CBD […] Bioavailability refers to the degree and rate at which a substance is absorbed into your bloodstream. Read more on how dosage and consumption method can affect how much cannabis your body uses. From taking CBD oil sublingually to using suppositories, each type of CBD product is absorbed by your body differently. Find out more about bioavailability.

7 foods to elevate effects of CBD supplements

Getting the most out of your CBD is essential for a variety of reasons. The first being it is expensive. Buying CBD oil can cost upwards of 100 dollars for a 30ml bottle. If you are using CBD daily (which we highly recommend), this becomes a monthly expense. Another reason is you want as much CBD…

Getting the most out of your CBD is essential for a variety of reasons. The first being it is expensive. Buying CBD oil can cost upwards of 100 dollars for a 30ml bottle. If you are using CBD daily (which we highly recommend), this becomes a monthly expense. Another reason is you want as much CBD to get into the bloodstream as possible to experience the benefits.

Absorption and bioavailability become very important for CBD users who want to get the most out of their CBD. Research has shown that taking CBD on a full stomach increase absorption leading to high bioavailability. We have come up with seven foods to take before taking your dose of CBD to get the most out of your product.

How to Increase CBD Bioavailability?
A study done by the University of Minnesota’s phrenological department tested bioavailability for CBD with or without food. The researchers also concluded that foods with high levels of healthy fat would also increase absorption rates.

If you are taking CBD oil, we first want to make sure you are administering it correctly. CBD oil is meant to be taken sublingually or absorbed under the tongue. Allowing CBD oil to dissolve under the mucosal glands located under the tongue fully allows the CBD to enter the bloodstream more efficiently.

Relatively speaking, CBD oil taken sublingually is the most efficient way to take CBD . Many users put CBD oil in food and will not receive the benefits of sublingual administration. If you are concerned about getting as much of your CBD to the bloodstream as possible, we recommend eating one of the foods on our list and taking the CBD oil sublingually as soon as you can right afterward.

Best Way to Absorb CBD
The foods on our list are all high in healthy fats. These foods increase the bioavailability of CBD and maximize its benefits. A recent study claims that taking CBD on a full stomach after a meal high in fat can increase the absorption rates by up to 400%.

Our seven CBD potentiators can be eaten directly before or along with your dose of CBD to maximize the effects. Experiencing the benefits of CBD can take time and consistency. Taking a regular amount along with one of these seven foods maximizes the potential to deliver the benefits.

#1 Fatty Fish
Most people agree that eating fatty fish is one of the healthiest meals available. Salmon, trout, mackerel, sardines, and herring are among the types of fish considered to contain large amounts of healthy fats.

Fish are packed with omega-3 fatty acids, protein, and nutrients but can also help you absorb CBD more efficiently. If you are experiencing mental health issues that keep you from getting everything you want to get done during the day, try eating salmon and eggs (another healthy fat) at breakfast, followed by a dose of CBD.

#2 Avocados
We didn’t feature any other fruits on our list of foods to take with CBD because they are usually made up of carbs. However, avocados are packed with fats and are the perfect food to maximize bioavailability.

Elevate the effects of CBD by eating an avocado before taking CBD sublingually. Unlike salmon, avocados are an extremely affordable way to increase absorption.

#3 Dark Chocolate
Dark chocolate is by far the tastiest and most convenient way to increase bioavailability. About 65% of the calories in dark chocolate consist of fat. Dark chocolate is also loaded with antioxidants that have some of the same benefits as CBD.

#4 Nuts
Potentiating CBD can also be done with nuts. Almonds and walnuts are among the healthiest, packed with healthy fats and plant-based protein.

Just a handful of almonds contains enough fat to increase the bioavailability of your CBD.

#5 Whole Eggs
Many people consider eggs unhealthy because of their cholesterol content; however, recent research has found that the cholesterol in eggs does not affect the cholesterol in the blood.

Eggs are, in fact, packed with healthy fats, vitamins, protein, and nutrients. They are perfect for taking with CBD if you are looking to get the most out of your CBD oil, especially if you are using CBD products to lose weight.

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Taking CBD oil to lose weight is perfectly complimented with eggs because the eggs are so nutrient-dense. Taking CBD can suppress the appetite, and taken along with CBD, it can serve as a way to feel full.

#6 Cheese
Cheese is another food that is regarded as unhealthy but is actually packed with nutrients and healthy fats . A single slice of cheese can contain as much protein as a glass of milk.

Taking CBD with cheese can maximize bioavailability because it is packed with healthy fats.

#7 Coconuts and Coconut Oil
Many CBD oil manufacturers use MCT oil (coconut oil) as a carrier for their CBD. Coconuts are a great source of healthy fats and other vitamins and minerals. Cooking with coconut oil is a healthy option for butter and vegetable oil because it has fewer calories.

Taking CBD oil with MCT oil is beneficial, but eating additional coconut will deliver increased levels of absorption and bioavailability.

Enhance CBD Oil CBD oil food is a popular way of taking CBD, but we recommend eating a food high in healthy fats followed by sublingual CBD oil. Edible CBD is not as effective as CBD oil and has a much lower bioavailability.

Taking CBD on a full stomach creates the best environment for CBD to provide the most benefits possible. Utilizing our recommendation for foods with healthy fats and taking CBD sublingually will deliver the highest bioavailability and absorption rates. Next time you take CBD, try filling your stomach with some food high in healthy fats.

Most THC and CBD oil goes to waste in your body—here’s why

If you knew that only 6% of your CBD gummies would enter your bloodstream to do their job, would you still purchase them? Amid the current frenzy surrounding cannabis and its therapeutic benefits, it’s easy to gloss over the bioavailability of cannabis products.

Bioavailability refers to the degree and rate at which a substance is absorbed into your bloodstream to be used where needed. Physiological processes and consumption methods can affect cannabis absorption, rendering its effects somewhat hit-and-miss.

It’s critical to get clued up about bioavailability in order to maximize the medicinal potency of cannabis. The more bioavailable your cannabis, the lower the quantity of the plant you need to reap its benefits.

What factors influence cannabis bioavailability?

The surge in cannabis popularity can be partly attributed to the range of consumption methods available. Edibles and tinctures can have less of the stigma traditionally associated with joints. However, when cannabinoids such as CBD and THC are ingested in oil form—oil is also used to make edibles—their bioavailability becomes compromised.

CBD and THC oils resist absorption into the bloodstream because the human body is up to 60% water . Basic science—and salad dressing—dictates that oil and water do not mix, and the same is true for cannabis oil and the human body.

“Cannabinoids are fat-loving molecules and have to traverse a cellular environment that is aqueous or watery,” explains Dr. Patricia Frye, a member of the Society of Cannabis Clinicians and chief medical officer at Hello MD . When cannabis is consumed as an oil, the onset of effects can become delayed and bioavailability limited.

Another phenomenon that limits oil-based cannabis extracts from reaching the bloodstream is the first-pass effect. When cannabis is ingested orally, it is absorbed in the gastrointestinal tract and transported via the portal vein to the liver, where it is metabolized. As a result of this process, only a limited quantity reaches the circulatory system. Since cannabis oil is often taken orally, its efficacy can be hindered.

Are some cannabinoids more bioavailable than others?

There has been some investigation into CBD, THC, and less into cannabinol, or CBN. Studies have shown that the bioavailability of cannabinoids depends on the method of delivery.

When applied as a topical ointment or transdermal patch, CBD can penetrate the tissue ten times more effectively than THC. The same is true of CBN.

THC, however, is more bioavailable than CBD when administered orally or delivered via the lungs. A clinical study found that concentrations of THC in the bloodstream appeared 30-50% higher than CBD following oral delivery as a sublingual spray.

However, the bioavailability of THC is still limited when consumed orally, averaging only 4-12%. When smoked or vaped, the bioavailability of THC leaps to an average of 30%.

Which methods of cannabis consumption optimize bioavailability?

Some of the most common and convenient cannabis products, such as capsules, soft gels, tinctures, and edibles, limit bioavailability due to the first pass through the liver. “With edibles, absorption is slow, unpredictable, and highly variable,” says Frye. “Only about 6% of the dose is absorbed. The onset of action can be as long as 6 hours; it’s very easy to take too much, and the effects can last as long as 20 hours!”

Oral administration lasts longer than smoking, eliminating the need for frequent dosing. Oral methods also avoid irritation to the airways and the risk of malignancies associated with smoking or vaping.

That said, inhaling cannabis guarantees increased bioavailability because molecules are transported by vapor particles directly to the alveoli in the lungs. This allows cannabinoids to rapidly enter the bloodstream without being metabolized by the liver.

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Another lesser known method of administration is intranasal delivery, which enables cannabinoids to be easily absorbed with a rapid onset of 10 minutes or less. “Intranasal methods are highly bioavailable at 34-46%,” says Frye. “It’s a particularly helpful mode of delivery for patients who are having a seizure or for patients trying to abort an impending seizure or migraine.”

Transdermal patches can be super effective at targeting localized or systemic pain. They allow for a steady infusion of active ingredients to the delivery site, so the patient is unlikely to experience spikes of THC in the bloodstream.

Finally, nano-emulsions and micro-emulsions can dramatically increase the stability and bioavailability of cannabinoids. These novel formulations use nanotechnology to offer up to 100% bioavailability. Frye cautions, however, that the research is still scarce. “We don’t know the full extent of how these manipulations affect cannabinoid activity at the cellular level,” she says.

What tips or tricks can help increase bioavailability?

One method that boosts the absorption of edibles is to combine cannabis product with fats. Frye recommends combining edibles or tinctures with healthy fats such as guacamole, hummus, or dark chocolate. If you’re feeling less virtuous, however, ice cream works as a treat. The same goes for alcohol-based tinctures.

For those who smoke or vape, bioavailability can be enhanced by minimizing sidestream loss and increasing the number of puffs. “Using a desktop or handheld vaporizer with flower will eliminate sidestream losses,” Frye advises. If you think you get more bang for your buck by holding your breath, think again. “There is no evidence supporting holding one’s breath for more than 10 secs,” says Frye.

Some final words of advice from Dr. Fyre, for those looking to optimize cannabis bioavailability: “The most cost-effective way to use cannabis is not to use more than you need. Less is more,” she says. Due to its biphasic nature, excessive dosing may exacerbate the symptoms you’re trying to alleviate.

CBD bioavailability

In some CBD products, most of the CBD you consume will be destroyed before it reaches your bloodstream. How much survives for your body to utilise, is known as bioavailability. Bioavailability can be increased or decreased depending on how you take it.

Understanding how ‘bioavailable’ a product is, gives you valuable insight into how effective it will be.

What is bioavailability?

The bioavailability of any product refers to the amount of the active ingredient that will reach your bloodstream once you’ve consumed it. Once it’s been absorbed into your blood, it can be transported around your body to be used in your cells and tissues.

The bioavailability most often depends on the type of product and how it is been taken. Most methods of taking CBD only allow a limited amount of cannabidiol to reach your bloodstream. Some is broken down on the way or lost through other bodily processes.

If CBD were injected directly into your blood vessels, the bioavailability would be 100% because the full measure could be used in your body. Most other methods of taking CBD involve longer journeys to reach your blood resulting in a lower portion surviving.

Please note: We do not recommend that you inject CBD under any circumstances.

Bioavailability offers a useful way of estimating how effective a product might be. If it is highly bioavailable, more CBD can be used. Products with low bioavailability will deliver a small amount to your system and will need to be taken in larger amounts to produce a potent effect.

CBD absorption: fast facts

  • CBD can be absorbed sublingually, through the skin, orally, rectally and inhaled.
  • The most bioavailable form of CBD is an e-liquid/vape juice. Up to 56% bioavailability.
  • You can make CBD more bioavailable by consuming it with a fat such as MCT oil.
  • CBD can be absorbed in as little as 10 minutes when inhaled. Absorption can take up to two hours if eaten.

Bioavailability of different CBD products

There are hundreds of different CBD products to choose from, but they are all likely to be used in one of five ways : eaten, inhaled, absorbed under your tongue, inserted rectally or applied to your skin.

Each method transports CBD into your body but has a different rate of absorption. Different types of product deliver varying percentages of the original measure to your blood. The time it takes for you to feel any effect is likely to be different too.

The most efficient method for CBD absorption is to inhale the vapour using a vaporiser, which can deliver up to 56% of each measure to your bloodstream. This is a significant improvement compared to the 4-20% that is absorbed when you eat CBD.

CBD bioavailability chart

Method used

Uptake into your bloodstream

Time to take effect

1. Swallowed / ingested

30 minutes – 2 hours

2. Sublingually (under the tongue)

3. Rectally

4. Inhaled or vaporised

5. Topically (rubbed into the skin)

Can be up to 45% but stays localised (enters local tissue & small blood vessels only).

1. CBD drinks or edibles

Any CBD product that is eaten or drunk must pass through your digestive system and your liver. This process has significant waste which is why only 4-20% of the CBD is available for use in your body.

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Although you need to use more significant amounts of CBD to get the effect you want, these products are still popular. Capsules, drinks, edibles are convenient, discreet and can be flavoured to disguise the taste of the hemp extract.

2. CBD drops held under your tongue

Holding CBD under your tongue allows it to be absorbed across the thin membrane directly into the blood vessels. This means that it isn’t broken down in your digestive system, so there is a more significant amount available for use.

This method is most effective with liquid products like oils or tinctures. The desired number of drops is held under your tongue for 1 to 3 minutes and then swallowed. This can result in up to 35% bioavailability which is significantly better than just swallowing it.

The drawback with this method is that some products are hard to place under your tongue accurately and holding CBD in your mouth can produce an intensely bitter flavour. Finding a product with an accurate dropper or standing in front of a mirror to apply the drops can make it easier to deliver a precise measure. Also, holding oil under your tongue dulls the intensity of the flavour compared to holding it in your mouth as usual.

3. CBD suppositories inserted rectally

Because a large number of blood vessels in your rectum are close to the surface, CBD suppositories can have a bioavailability of up to 50%. However, products that can be used in this way aren’t easy to find and most people prefer not to use suppositories if there are other options available.

4. Vaporised or inhaled into your lungs

Vape oils, e-liquids and the dry herb are turned into tiny airborne droplets in a vaporiser. They can then be inhaled, drawing the CBD particles into your lungs. Then they cross the thin mucus membrane into your lung’s blood supply.

Your lungs provide a surface area of up to 75 square metres, which makes absorption into your blood quick and easy. The blood that passes through them picks up the CBD, travels to your heart and then around your body before it passes through the liver. This results in a large portion of each inhalation being available for use in your body.

CBD products burnt and smoked

Smoking CBD uses combustion to release particles that can be inhaled. The bioavailability can reach 31%, but you will also be inhaling other by-products (e.g. carcinogens) in the smoke. Also, when hemp or CBD flower burns, some of the cannabinoids are destroyed in the combustion resulting in it being far less efficient than vaping.

5. Rubbing CBD into your skin

Rubbing CBD into your skin is best when you’re aiming to target a specific area. A small amount may reach your bloodstream but not enough to provide any noticeable whole-body effects. Topical CBD is often added to skin care products or rubbed into joints and muscles.

Ways to increase bioavailability

To ensure you get the most out of every CBD product, there are some easy ways to boost the amount that reaches your blood:

Hold drinks and edibles under your tongue before swallowing

If you’re consuming CBD in a drink, oil, capsule or gummy, hold it under your tongue for 1 to 3 minutes before swallowing it. Biting open a soft gel capsule first will release the contents and increase the likelihood they can be absorbed sublingually. Gummies or other soft edibles can be vigorously chewed and then held under your tongue for better bioavailability.

Take CBD with a fatty meal

CBD dissolves well in fats so if you eat it combined with fat or follow it up with a fatty meal. It’s been found that more will survive the passage through your digestive system. Studies found that compared to taking CBD on an empty stomach, taking it with fat could increase the amount in your body by four times.

Choose water-soluble CBD products

Water soluble CBD is likely to provide a better bioavailability than those made with oil. It is specially prepared to pass quickly across your gut wall and miss out the first stage of digestion. It’s still broken down to some degree, but studies have found that the resulting concentration in your blood is higher than with standard oil preparations.

Conclusion

CBD affects each person in a slightly different way but knowing how much of each measure will reach your blood for use in your body, will help you to make better-informed decisions about what to buy and how to use it.

Vaping or holding CBD under your tongue are the best ways to get CBD into your system and as a result, are likely to be more cost-effective than other methods.

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Janelle Lassalle

Janelle is a lifestyle and cannabis writer based in Portland, OR. An expert on all things cannabis and CBD, you can find her work featured in publications like Leafly, Forbes and DOPE Magazine. She’s also an aspiring filmmaker, an avid Nutella addict and enjoys cooking long, fancy meals on the daily.

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