Longan Extract (Long Yan Rou/Dimocarpus Longan): Benefits & Side Effects

In order to improve our health, our performance, and our condition, in general, is mandatory to have a good diet – and being active.

As a result, looking for the best foods and supplements will give your body that ‘kick’ it needs to get results, faster.

Longan extract is believed to improve your cognition. But there hasn’t been many studies to prove whether it works yet. So we’ll analyze whether Logan Extract is going to be a good addition to supplements in the future.

In this article, you’ll learn:

  • What Is Logan Extract?
  • Logan Extract Benefits
  • Side Effects
  • Better Alternatives
  • Conclusion

What Is Logan Extract?

Longan extract is what you get from boiling the seeds and the pulp of the Long Yan Rou fruit. There are several recipes and ways to prepare it in order to get more benefits.

Also known as Long Yan Rou & Dimocarpus Longan; it’s a “multivitamin fruit” originally from South Asia that has great benefits in the human body.

Not only that; it’s also commonly known as “dragon eye fruit” due to its appearance; Logan Extract’s greatest properties are found in the extract and not in the flesh.

Popular In Asia 

This fruit is also used to make some dishes in Asia for making breakfasts and even soups; the recommended extract dosage goes between 200mg to 400 mg per kg of body weight.

However, the most popular way to prepare it is by boiling the seeds and the pulp. This great tonic is used in the Chinese medicine primarily to improve heart condition, to help with insomnia, and to improve memory.

Not Enough Research = Unreliable 

Ultimately, there’s a reason why you probably haven’t heard of this ingredient yet – because it hasn’t been studied much.

It’s always better when nutrients are tried-and-tested in supplements; this allows you to see exactly how effective they are, and more importantly, whether they cause any side effects.
We’ll get to side effects after taking you through the potential benefits of Logan Extract below…


Longan Extract Benefits

Here’s why people think Longan extract is beneficial; it’s thought to contain different types of vitamins, minerals, and amino acids.

That’s the reason why a lot of people consider it a “multivitamin fruit” and even a “super food”. But just remember, Raspberry Ketones were once considered a ‘super nutrient’ too…

Here’s the potential benefits of Logan Extract:

  • Memory enhance and neuroprotector

In one study with mice, with the increase of the dosage (mg/kg) of Longan extract in different groups, it showed a good improvement in memory. It also has neuroprotector properties that battle memory loss, therefore, aging.

The neuroprotector property is also really good for people who exercise especially with weight training. While we are in a weight session, our bodies go through neurological and physical difficulties.

Some studies suggest that it might have also an impact on the learning process, however, it hasn’t been proved yet

  • Decreases fatigue and improves energy

By decreasing the lactic acid in our blood and, increasing the hepatic glycogen (the fuel to our muscles), the Longan extract is a great option to battle fatigue and increase energy. One of the most appreciated benefits of this extract.

  • Improves immune system

The several vitamins found in the fruit work together to make it a good immune system booster. However, the concentration of Vitamin C is not really high.

Again, another great benefit for people who exercises every day to protect them from several diseases. When we are training and exercising our immune system tends to go down.

  • Anti-inflammatory

One of the latest discoveries of the Longan extract is its anti-inflammatory properties. This is great for overall health and organs condition.

Side Effects

As we mentioned, Logan Extract hasn’t been researched much – so we can’t confirm whether it causes side effects regularly or not (but we’ll keep this page updated for you).

For now, there is no actual proof of any “overdose” for Longan extract or the fruit. But that doesn’t mean it’s the perfect nutrient.

Low In Antioxidants & Vitamin C

So, the “side effects” or “downsides” of the Longan extract are that is not rich in antioxidants rather than just a small concentration of Vitamin C.

Very High Sugar Content 

It is also really high in sugar which makes it a little bit dangerous for people with type 1 and 2 of diabetes. So this is definitely something to take into consideration.

Potentially Causes Asthma & Allergic Reactions

Another downside of the Longan extract is that it might cause asthma on people with flu or with respiratory issues in general. Last but not least, there is a really low chance that you could be allergic to the proteins of the fruit.

Ultimately, we never consume anything that hasn’t proven to be safe and effective in numerous studies. For now, we’ll be avoiding Logan Extract; but we’ll keep an eye out for future studies to see whether it passes the tests.


Better Alternatives

There are some alternatives that can offer you similar benefits, and, most importantly, are easier to find. Not only that, the alternatives we’ll recommend are tried-and-tested to be safe and effective.


This stimulant is the best nutrient for raising your energy levels, safely. But it offers much more benefits than simply helping to keep you awake…

Here’s the benefits of Caffeine: 

  • Elavated Energy
  • Improves Strength & Endurance
  • Reduced Fatigue
  • Enhanced Focus

Just to have an idea, an average cup of coffee has between 40 to 100 mg of caffeine. As a result, we recommend that you consume under 200mg per serving in pre-workout supplements, and under 100mg per capsule in fat burner supplements.


Tyrosine is a non-essential amino acid which means that the body can synthesize it (produce it). This particular amino acid has the anti-stress and memory benefits of the Longan extract.

However, L-Tyrosine has proven to work – and ultimately, Logan Extract still hasn’t been researched much.

How It Works & Benefits

It’s believed that Tyrosine promotes dopamine which is a neurotransmitter that promotes relaxation and happiness in the body.

However, the main reason L-Tyrosine is added to supplements is because it can improve your cognition (memory, focus and mental alertness).

For this reason, we believe it’s one of the best ingredients you can find in Nootropic supplements.


Longan extract is definitely a great option that you should give it a try. The fruit itself might be difficult to find but it’s believed to offer some useful advantages.

If you’re looking for a quick summary of what Logan Extract does; it’s believed to improve your cognition.

However, it’s not proven to be 100% safe or effective in many studies yet – making it unreliable. For this reason, we still consider Caffeine & L-Tyrosine to be the best ingredients to boost your focus in the gym.

L-Tyrosine & Caffeine are also two powerful nutrients that are both tried-and-tested to work. For now, we’ll stick to these ingredients, rather than take the risk with Logan Extract.

Bottom Line: Logan Extract is a relatively new addition to supplements, so it’s unreliable at the moment. We’ll be sticking with L-Tyrosine & Caffeine in the near future, but we’ll keep an eye on new studies of Logan Extract.

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