The recommended dose of Kratom depends on age, sex, and health status. Apart from that, the method of ingestion and the strain, can also influence kratom’s effects.
In a 2018 study with 8,049 people who use kratom, most people reported that a dose of up to 5 grams of powder taken up to 3 times in a day was efficient to experience effects.
In general, you can experience the most potential benefits around 4-6 grams. More can potentially lead to some side effects. For this reason, taking 6 grams is enough to experience the effects as the highest dose.
1 to 3 grams is suggested for beginners.