More than 100 different species of pine trees exist. They’re an ancient genus of evergreen trees that grow abundantly in many parts of the northern hemisphere and in some parts of the southern hemisphere as well. In the past, many cultures have used the bark, needles, resin, and nuts of pine trees as medicine (1, 2, 3, 4).
In the 1940s, scientist Jacques Masquelier began studying the health effects of pine bark after learning that indigenous peoples of North America were using pine bark tea to heal scurvy and wounds (1, 5).
Since then, pine bark extract has continued to increase in popularity as an herbal supplement.
This article explains what pine bark extract is, what it’s used for, and how to use it safely.
What Is It?
Pinus pinaster is a type of pine tree native to areas of the Mediterranean including Portugal, Spain, France, and Morocco. The trees are commonly called maritime or cluster pines.
The bark of maritime pines is thick and grows in various shades of brown, orange, and red.
Although many species of pine appear to have beneficial health properties, the majority of pine bark extracts sold as herbal supplements today come from maritime pines (2, 3, 6).
Pine bark extract is sold under a variety of trade names with some of the most common being:
Pycnogenol
Oligopin
Flavangenol
Sometimes these supplements contain other ingredients in addition to the bark, such as:
vitamin C
other plant extracts
fillers like cellulose or glycerin
How It’s Made?
Maritime pine bark extract is made by first grinding pine bark, then washing and soaking it in hot water. Next, the solids are removed from the liquid extract (2).
The liquid extract can then be used as is or further processed by freeze-drying and grinding it into a powder.
What Makes Pine Bark Effective?
Maritime pines are known to contain health-promoting plant compounds like vitamins, polyphenols, and other phytonutrients.
Many of these are also found in other supplements like grape seed and witch hazel extracts (5, 7, 8).
The total amount of compounds in pine bark extract may vary depending on the type of bark used and how it was manufactured (9, 10).
The following is a brief summary of the most notable polyphenol nutrients in pine bark extract and how they may benefit human health:
Procyanidins. A type of flavonoid that acts as an antioxidant and appears to have medicinal properties. All Pycnogenol maritime pine bark extract is standardized to contain at least 75% procyanidins (8, 11,12, 13).
Catechins. Another antioxidant-like flavonoid family that protects cells from oxidation and damaging free radicals (5, 8, 9, 12).
Phenolic acids. A group of polyphenols that exhibit high antioxidant activity and are commonly found in plant foods (2, 9, 13, 14).
These compounds are believed to be what makes pine bark useful as an herbal supplement, giving it the following effects:
It’s thought that the extract’s antioxidant, antimicrobial, and anti-inflammatory properties have the potential to improve conditions like cancer, heart disease, and neurodegenerative conditions like Alzheimer’s disease — but more research is needed (2, 15, 18, 22).
Does It Have Benefits?
Test-tube and animal studies from the past few decades have found encouraging results to support the health-promoting benefits of pine bark extract.
Many studies have been conducted on the trademark brand of French maritime pine bark extract known as Pycnogenol. Due to its anti-inflammatory effects, researchers are beginning to investigate it as a possible therapeutic option for the novel coronavirus (SARS-CoV-2), which causes the disease COVID-19 (11, 12, 23).
Still, rigorous research on the effectiveness of pine bark extract in humans is lacking, and more randomized controlled-trial studies are needed. So, it’s too soon to say how safe and effective pine bark extracts are for treating specific illnesses (24, 25).
As more research is conducted, we’ll gain a better understanding of the best ways to use pine bark extract.
Nevertheless, the extract continues to show potential. Here are some of the initial benefits of pine bark extract purported today.
May Reduce Inflammation
It appears that French maritime pine bark exerts much of its anti-inflammatory capabilities by influencing your body’s cellular pathways that regulate inflammation and your immune system(21, 23, 26, 27).
Researchers are still investigating how this could benefit conditions like chronic heart disease, diabetes, traumatic brain injuries, and more (28).
The apparent ability of pine bark to alleviate inflammation has also led to studies on its potential as a therapeutic treatment for chronic airway inflammation conditions, like asthma and chronic obstructive pulmonary disease (COPD) (26, 27, 29).
For example, animal and test-tube studies have shown positive results for Pyconogenol’s ability to improve inflammation in airway cells (26, 27,30).
A few older studies including humans found similar effects of Pycnogenol’s ability to alleviate asthma symptoms — though these studies were too small to make definitive conclusions about pine bark’s effectiveness as an herbal supplement (31, 32, 33).
One study including 76 asthma patients found that taking 100 milligrams of Pycnogenol daily for 6 months, in combination with inhaled corticosteroid medications, significantly improved coughing and wheezing and decreased dependency on the corticosteroids (31).
Further, human and animal studies have found that procyanidin-rich pine bark extracts may ease short- and long-term bone and joint inflammation associated with arthritis. However, larger randomized controlled trials are needed to confirm these findings (34, 35, 36, 37).
May Support Heart Health
Because pine bark is both anti-inflammatory and antioxidant-like, it may support a healthy heartand cardiovascular system in a number of ways (38, 39, 40, 41).
These include limiting the buildup of fat, reducing oxidative stress and the likelihood of blood clots, and improving venous function (42, 43, 44, 45).
Plus, it’s possible that pine bark may offset certain negative side effects of chronic diseases like diabetes and metabolic syndrome (46, 47).
One small 2016 study including 24 adults with high blood pressure found that taking 150 milligrams Oligopin pine bark daily for 5 weeks improved HDL (good) cholesterol measures and lowered systolic blood pressure by an average of 6.36 mmHg (48).
Another small 2012 study including 23 adults with coronary heart disease associated taking 200 mg of Pycnogenol per day with improved blood flow through the arteries and lower levels of isoprostane — a measure of oxidative stress. No changes to blood pressure were noted (49).
Meta-analysis studies on Pycnogenol and blood pressure have found similar results (50, 51, 52).
Meanwhile, other studies have found pine bark extract to be less effective at reducing heart disease risk (53, 54).
Recent meta-analysis studies have determined that there’s not enough evidence to support a link between Pycnogenol and blood pressure (55).
So, although pine bark extract appears to support the mechanisms of heart health, it’s still unclear how safe and effective it is as a treatment for specific conditions.
Other Potential Uses
Pine bark extracts are also being investigated for a multitude of other uses in human, animal, and test-tube studies. These include:
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Pine Bark
In the 1940s, scientist Jacques Masquelier began studying the health effects of pine bark after learning that indigenous peoples of North America were using pine bark tea to heal scurvy and wounds (1, 5).
Since then, pine bark extract has continued to increase in popularity as an herbal supplement.
This article explains what pine bark extract is, what it’s used for, and how to use it safely.
What Is It?
Pinus pinaster is a type of pine tree native to areas of the Mediterranean including Portugal, Spain, France, and Morocco. The trees are commonly called maritime or cluster pines.
The bark of maritime pines is thick and grows in various shades of brown, orange, and red.
Although many species of pine appear to have beneficial health properties, the majority of pine bark extracts sold as herbal supplements today come from maritime pines (2, 3, 6).
Pine bark extract is sold under a variety of trade names with some of the most common being:
Sometimes these supplements contain other ingredients in addition to the bark, such as:
How It’s Made?
Maritime pine bark extract is made by first grinding pine bark, then washing and soaking it in hot water. Next, the solids are removed from the liquid extract (2).
The liquid extract can then be used as is or further processed by freeze-drying and grinding it into a powder.
What Makes Pine Bark Effective?
Maritime pines are known to contain health-promoting plant compounds like vitamins, polyphenols, and other phytonutrients.
Many of these are also found in other supplements like grape seed and witch hazel extracts (5, 7, 8).
The total amount of compounds in pine bark extract may vary depending on the type of bark used and how it was manufactured (9, 10).
The following is a brief summary of the most notable polyphenol nutrients in pine bark extract and how they may benefit human health:
These compounds are believed to be what makes pine bark useful as an herbal supplement, giving it the following effects:
It’s thought that the extract’s antioxidant, antimicrobial, and anti-inflammatory properties have the potential to improve conditions like cancer, heart disease, and neurodegenerative conditions like Alzheimer’s disease — but more research is needed (2, 15, 18, 22).
Does It Have Benefits?
Test-tube and animal studies from the past few decades have found encouraging results to support the health-promoting benefits of pine bark extract.
Many studies have been conducted on the trademark brand of French maritime pine bark extract known as Pycnogenol. Due to its anti-inflammatory effects, researchers are beginning to investigate it as a possible therapeutic option for the novel coronavirus (SARS-CoV-2), which causes the disease COVID-19 (11, 12, 23).
Still, rigorous research on the effectiveness of pine bark extract in humans is lacking, and more randomized controlled-trial studies are needed. So, it’s too soon to say how safe and effective pine bark extracts are for treating specific illnesses (24, 25).
As more research is conducted, we’ll gain a better understanding of the best ways to use pine bark extract.
Nevertheless, the extract continues to show potential. Here are some of the initial benefits of pine bark extract purported today.
May Reduce Inflammation
It appears that French maritime pine bark exerts much of its anti-inflammatory capabilities by influencing your body’s cellular pathways that regulate inflammation and your immune system (21, 23, 26, 27).
Researchers are still investigating how this could benefit conditions like chronic heart disease, diabetes, traumatic brain injuries, and more (28).
The apparent ability of pine bark to alleviate inflammation has also led to studies on its potential as a therapeutic treatment for chronic airway inflammation conditions, like asthma and chronic obstructive pulmonary disease (COPD) (26, 27, 29).
For example, animal and test-tube studies have shown positive results for Pyconogenol’s ability to improve inflammation in airway cells (26, 27, 30).
A few older studies including humans found similar effects of Pycnogenol’s ability to alleviate asthma symptoms — though these studies were too small to make definitive conclusions about pine bark’s effectiveness as an herbal supplement (31, 32, 33).
One study including 76 asthma patients found that taking 100 milligrams of Pycnogenol daily for 6 months, in combination with inhaled corticosteroid medications, significantly improved coughing and wheezing and decreased dependency on the corticosteroids (31).
Further, human and animal studies have found that procyanidin-rich pine bark extracts may ease short- and long-term bone and joint inflammation associated with arthritis. However, larger randomized controlled trials are needed to confirm these findings (34, 35, 36, 37).
May Support Heart Health
Because pine bark is both anti-inflammatory and antioxidant-like, it may support a healthy heart and cardiovascular system in a number of ways (38, 39, 40, 41).
These include limiting the buildup of fat, reducing oxidative stress and the likelihood of blood clots, and improving venous function (42, 43, 44, 45).
Plus, it’s possible that pine bark may offset certain negative side effects of chronic diseases like diabetes and metabolic syndrome (46, 47).
One small 2016 study including 24 adults with high blood pressure found that taking 150 milligrams Oligopin pine bark daily for 5 weeks improved HDL (good) cholesterol measures and lowered systolic blood pressure by an average of 6.36 mmHg (48).
Another small 2012 study including 23 adults with coronary heart disease associated taking 200 mg of Pycnogenol per day with improved blood flow through the arteries and lower levels of isoprostane — a measure of oxidative stress. No changes to blood pressure were noted (49).
Meta-analysis studies on Pycnogenol and blood pressure have found similar results (50, 51, 52).
Meanwhile, other studies have found pine bark extract to be less effective at reducing heart disease risk (53, 54).
Recent meta-analysis studies have determined that there’s not enough evidence to support a link between Pycnogenol and blood pressure (55).
So, although pine bark extract appears to support the mechanisms of heart health, it’s still unclear how safe and effective it is as a treatment for specific conditions.
Other Potential Uses
Pine bark extracts are also being investigated for a multitude of other uses in human, animal, and test-tube studies. These include:
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