In this blog post, we will examine what some of those factors are and what role they play in the duration of kratom's effects. In the final section, we will talk a bit about dosage and give some estimates for how long you can expect kratom to continue affecting you.


Everyone's unique body characteristics affect how much effect will come from a given amount of kratom. Things such as weight, brain chemistry, mood, age, and previous exposure can all play a role reducing (or amplifying) the effects of kratom.

Many of these are beyond the control of a kratom user. Changing your brain chemistry or age is impossible, and changing your weight isn't something you can do on a whim. What you can do is reduce the amount of tolerance that builds up over time. Tolerance to kratom comes most quickly when the same strain is used repeatedly. Changing up the strain every once in a while, keeps the body exposed to a different set of alkaloids and prevents it from adjusting too much to any one kind of kratom.

Reducing the amount of tolerance that is built up will ensure that you continue to experience the maximum duration possible with your kratom experience, but switching up strains has another advantage that is discussed below.

Strain Used

Because of the differences in body chemistry mentioned above, everyone responds to different strains of kratom, like the Maeng Da Kratom versus the Red Vein Kratom, in different ways. A strain that provides an extended effect in one person may provide a shortened effect in another person. Trying different strains will not only allow you to see which ones provide you with the longest effects but will help you to reduce the amount of tolerance that is built up.

Since there are so many factors that might affect how you react to a given strain of kratom, you should never make up your mind about a strain based on one use. As you alternate between the different kinds of Kratom, pay attention to how long it lasts and what the effects are. Over time you will get a more accurate picture of how each of them affects you. 

Full or Empty Stomach

Kratom starts to work quicker, and lasts longer, when the stomach is empty than it does when the stomach is full. On an empty stomach, the effects of kratom will begin after about a half an hour. Full stomachs lengthen the wait to anywhere from an hour to an hour and a half. This difference in onset time means that empty stomachs will enjoy an extra 30-60 minutes of effects before they begin to wear off.

Dosage and Duration

Unsurprisingly, the dosage taken plays a big role in the duration of the experience. Small to medium doses of 0-6 grams will general fade away after 4 hours or so. Higher dosages can last up to 8 hours, but are generally not recommended, especially for new users.

Peak effects do not last for the entire duration. Depending on dosage, tolerance, and all of the other factors mentioned, peak effects will last between one hour to two and a half hours. From there, a gradual decrease in effects will begin until the total duration is up and the effects have worn off.

It is also worth mentioning that kratom does not have a crash effect. This can make it a little more difficult to tell exactly when the effects have ended. It also makes the end of a kratom session more pleasant than it might otherwise be.

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