Maeng Da is a popular strain of Thai kratom, which tends to be thought of as strongly energising.
Riau is an area in the south-west of Sumatra, but the kratom which takes its name from the area is very much distinct from the Sumatran strains.
Thai kratom is a very commonly-found strain. Although it effects can be hard to pin down, it is generally described as a euphoric and energising kratom strain.
The term 'Indo' is a very common label to come across when browsing different kratom varieties, because it's an umbrella term for many of the world's best kratom strains.
Bali kratom is the favourite of a great many connoisseurs, and is very much a staple of the aficionado's collection. If you buy just one relaxing strain of kratom, you probably can't go wrong with a Bali.
Kratom from the Malay peninsula is a gem! Very much with its own character, it is perhaps surprising that it's not better-known.
White Vein Sumatra is amongst the most energetic and euphoric of all kratom strains, whereas Red Vein Sumatra is a gentler, smoother and longer-lasting alternative.
Red Vein Borneo is a tried-and-tested, relaxing kratom strain, and it is many people's favourite.