While the polysaccharides are the largest single group of Aloe constituents possessing some remarkable actions and activities, they are not alone, but share pharmacological properties with a large number of Aloe constituents.

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As you may be aware, plants have been the mainstay source of medically important materials (medicines) for literally thousands of years. Among these plants, the Foxglove has a special place because it was the original source of the cardiac glycoside, digitalis.  Digitalis works by slowing a runaway heart rhythm as well as increasing the force of the  contraction of the heart muscle, especially in cases of congestive cardiomyopathy –  (cardio = heart; myo = muscle; pathy = disease) commonly referred to as congestive heart  failure. In failing hearts, digitalis offers three potential therapeutic actions:


Chronotropic (Heart Rate Effects)  

Through Chronotropic (Heart Rate) effects, the heart rate is slowed so the diastolic  period (the time between actual muscular contractions [the systolic period]) is longer. It is  during the diastolic period that the heart chambers are filled with blood, ready for the  next beat. But just as important, this is the time when the heart relaxes and receives its  own nourishment. If the heart rate is too fast, the diastolic cardiac nourishment period is  too short. This makes the heart less efficient in pumping and circulating blood.


Dromotropic (Speed of Conduction of the Electrical Impulses Through The Heart)  

Through the Dromotropic effect, the electrical impulses are slowed. The heart’s  electrical impulses permit the atria (top chambers) to beat first, which fills the ventricles  with blood, followed by contraction of the ventricles which distributes blood to the body,  (The right ventricle pumps blood to the lungs while the left ventricle pumps blood to the  rest of the body.) Digitalis somewhat slows the conduction velocity through the heart’s  electrical system, thus increasing its efficiency and allowing it to work better with less  effort.


Inotropic (Force Of Heart Contraction) 


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Through the Inotropic effect, the force of the heart contraction is increased. With increased strength in the heart’s contraction, the cardiac output (amount of blood ejected from the right and left ventricles during a single beat) is increased, thus giving the body a better supply of fresh blood…  Improving circulation and stamina.

You may be wondering at this point: Why are we talking about digitalis? Is there digitalis in Aloe juice or extract? The answer, of course, is No. However, the Aloe extract does contain a mineral called calcium isocitrate which is capable of mimicking the positive inotropic action of digitalis, as demonstrated in the isolated cardiac tissues of animals. Indeed, some Japanese researchers isolated this mineral from Aloe saponaria.  Recently, it has been shown that this mineral is also found in Aloe aborescens and Aloe  barbadensis Miller, but the amount varies among the species.

Initially, investigators made some rather crude preparations, which, when tested in isolated rabbit atria (top heart chambers, as explained above), showed a remarkable  increase in the force of the contraction (positive inotropic action). (The reason researchers use isolated portions of heart tissue in such studies is to avoid any effects of  the nervous system and/or circulating, hormones which, might act with the material being  tested and make the results invalid.)

With further study and refinement of the material, the researchers were able to identify the active material in their success in producing the inotropic action with Aloe components. The active material was shown to be the mineral salt, calcium isocitrate, which had increased the force of contractions in isolated atria tissue from guinea pigs.

To confirm their findings, the researchers synthesized the calcium isocitrate and tested its activity using the same types of isolated heart tissue.

The results, as the graph shows, duplicated those produced with the material extracted from Aloe juice. Interestingly, other salts from the Aloe juice also showed positive inotropic activity.

Studies have also shown that calcium citrate, a salt advocated for the treatment of osteoporosis (a condition found in older women which causes bones to lose calcium and become weak and brittle), is well absorbed by the human gastrointestinal tract. Some researchers believe that the human body absorbs the calcium isocitrates just as well as it does the calcium citrate. However, no data from studies in human subjects, are available to confirm this belief.


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The presence of this beneficial compound is no surprise to Aloe researchers. All of these  salts are insoluble in alcohol and thus, would be expected to be found in the  polysaccharide Aloe fractions precipitated with alcohol in the laboratory.


Aloe Juice Benefits on Heart

  1. Promotes heart health: Drinking aloe Vera juice could internally help you to improve blood circulation in the body. Aloe Vera is known to decrease total fat levels in patients with high cholesterol. This further helps in reducing fatty deposits and blood clots in the arteries of the heart. (1)
  2. Reduce Your Risk of Heart Attack and Stroke (2)

The preliminary research studies on aloe Vera juice are promising. But to achieve the best results for heart attack and stroke prevention, it is recommended you combine aloe vera juice with other health strategies such as diet and exercise. Some believe it’s beneficial to take vitamins and other supplements and even certain foods, such as chia.

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  1. https://www.indiatoday.in/lifestyle/wellness/story/aloe-vera-juice-5-amazing-benefits-of-guzzling-the-humble-health-drink-316590-2016-04-06
  2. https://universityhealthnews.com/daily/heart-health/6-health-benefits-of-aloe-vera-juice-for-your-heart/