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Green Horn vs Green Riau: Comparing These Two Green Varieties

Today, we’ll be lining up two middle-popularity green varieties in our side-by-side comparison, Green Horn and Riau. Many fans of green kratom varieties wonder how these two stand apart, with Green Horn being more well-known and Riau less well-known.

Both being green-veined strains, they might share some commonalities. However, their subtle differences in potential effects and alkaloid profiles may differ slightly. Read on to understand the basics of each strain and what makes them different from one another so that you can make the most informed green-variety choice if looking to add either into your regimen,

What is Green Horn Kratom?

Green Horn is largely grown and commercially cultivated on farms in Indonesia, however it can also be found growing in the wild. The “Horn” in its name is a representation of its visually spike-shaped leaves that differ from a majority of other kratom strains with smooth edges. Horn kratom is thought to possibly be one of the strains used to breed Maeng Da (which used botanical grafting of two strains to create a new one), although this has not been confirmed or documented.

Horn kratom comes in 3 vein color varieties which are determined by when the leaves of the Horn kratom plant are harvested. Green-veined leaves are harvested in between Red and White Horn varieties, which each have subtle tints in their veins and stem colors. While the leaves are immature, they have white veins and stems and while they are super mature, they have red veins and stems. Green Horn is right in the middle, with green throughout. The vein and stem colors might be representative of slightly differing alkaloid profiles, of which there are believed to be 35 in the Horn kratom plant.


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image of green horn kratom

Green Horn is believed to contain diverse alkaloids, with the active primary ones being mitragynine and 7-hydroxymitragynine (present in all Mitragyna Speciosa strains). In addition to mitragynine and 7-hydroxymitragynine a number of other alkaloids may exist, such as speciogynine, corynantheidine and paynantheine that might help collaborate in the totality of effects (although not much is known about many of them).

Green Horn is celebrated for its potentially balanced properties, providing energy and relaxation due to it being in the middle of the road between White and Red Horn varieties. Users often report increased focus, productivity and mental sharpness, along with a strong aroma. Its mid-to-high alkaloid ratios make Green Horn potentially suitable for daytime uses, delivering a possible gentle lift without excessive stimulation or drowsiness seen in the other Horn color varieties.

What is Green Riau Kratom?

The Green Riau strain gets its name from the Riau region in Indonesia, where the strain was first believed to be discovered. The Riau region is located on the East Coast if the Sumatra Island and is known for its lush and vibrant climate, friendly to kratom tree growth and development.

Similarly to the Horn color varieties, Riau has three vein colors as well, with Green Riau leaves harvested in the middle of the growth cycle. It is believed that the potential effects of green vein, red vein and white vein Horn varieties differ from one another and also in terms of total alkaloid profile and development. In all three color varieties of Riau, the two main alkaloids mitragynine and 7-hydroxymitraynine exist, but possibly in differing ratios depending on the variety.

Over 2 dozen other alkaloids are believed to exist in Green Riau, however the mechanisms of each one in terms of their standalone contribution to the potential effects and interactions are not well understood. Some of the secondary alkaloids to mitragynine and 7-hydroxymitraynine might be paynantheine, speciociliatine and isopaynantheine.

As a green vein, Green Riau may share a nice balance between its Red and White cousins, leading to potential relaxation and energetic effects. Samplers of the Green variety often suggest that Green Riau offers stimulation with a blend of calming focus that is not as sedating as the Red variety of Riau. Therefore, Green Riau may be a great choice for morning, daytime and possibly evenings.

image of comparing benefits of green riau and horn

Comparing the Benefits of Green Riau and Horn

Potential Green Horn Effects

  • May provide a gentle energy boost
  • Might slightly enhance focus
  • May uplift mood and positivity
  • Might support mental clarity and alertness
  • May encourage motivation & productivity

Potential Green Riau Effects

  • May offer balanced energy and relaxation
  • Might promote mental calmness & tranquility
  • Might uplift mood temporarily
  • May reduce mental tension & unease
  • Might provide a subtle cognitive boost

What About the Adverse Effects of Green Riau and Horn?

There are a number of common adverse effects seen with all Mitragyna Speciosa strains, including Green Riau and Green Horn. Below are some of the most common adverse effects, however be advised that this list is just some of the most common ones experienced.

  • Nausea
  • Dizziness
  • Headaches
  • Wobbles (Also known as “kratom wobbles”)
  • Stomach / GI discomfort
  • Vertigo
  • Constipation
  • Changes in blood pressure
  • Sweating
  • Dry mouth
  • Irritability
  • Mood changes (irritability etc)
  • Vertigo & puking

In addition to considering the above common adverse effects, there are other severe and rare adverse effects to consider. While severe adverse effects seem to affect those mixing kratom with certain medications and drugs, one should always consider them regardless and consult with a knowledgeable doctor prior to using Green Horn, Riau, or any kratom product. Also, those with certain health conditions may be at a much higher risk of severe adverse effects, so a doctor should also be consulted about these, if any, prior to use.

Due to the risks of adverse effects linked to kratom, the Food and Drug Administration posted a public memo warning people not to consume kratom. This should be considered prior and discussed with your doctor, outlining all of the above risk factors. In addition to this, kratom strains like Green Horn and Riau may be habit-forming due to the primary (and possibly secondary alkaloids). Therefore, avoiding daily use and high dosages is highly advised, otherwise one might have difficulty stopping use and some unpleasant adverse effects upon doing do

image of comparing dosage of green riau and green horn

Comparing Dosages of Green Horn & Green Riau

Green Horn

Mild DoseModerate DoseNot Recommended
1 to 2 grams - Possibly subtle mood enhancement, a slight increase in overall well-being, and mild relaxation.2 to 4 grams - Potential increased sense of well-being, improved mood, and gentle calming sensations, along with a possible boost in focus and concentration.3 to 6 grams - May lead to increased risk of side effects such as nausea, dizziness, and stomach discomfort, with minimal additional benefits.

Green Riau

Mild DoseModerate DoseNot Recommended
1 to 2 grams - Possibly subtle mood elevation, a mild increase in overall well-being, and slight relaxation, with potential for improved focus and alertness.3 to 5 grams - Possible enhanced mood, increased sense of well-being, and moderate relaxation, accompanied by improved mental clarity6+ grams - May increase the likelihood of side effects such as nausea, dizziness, and headache, while offering minimal additional benefits in terms of mood enhancement and relaxation.

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