A unique herb when taken in different doses which will give you different effects is called kratom. Kratom plant has active alkaloids that work both as stimulant and a sedative. Small doses is advised to begin with so that you will know how your body will react because it has different effects depending on the amount you have taken and the person taking it.

You will feel more alert with more physical energy, and for some people, more sexual energy if taking kratom in a low dose because of its stimulating effect. Thus, you feel more sociable, friendly and talkative, and hard, boring and physical activities will be easier for you. A lot of people will likely enjoy these effects but for some people they will feel edgy and uncomfortable.

The sedating effect from a high kratom dose will make you feel calm and have a general pleasurable feeling and you may also enter trance-like state, but normally you feel less sensitive to emotional and physical activities. Many people may feel they have entered the "walking dream" state which was popular during the 19th century, you may also find it pleasurable in this state that you wanted to lie down in a darkened room and listen to music. The higher the dose, the stronger the effects will be and usually it lasts about six hours.

The following recommended dosage does not apply on extract but rather apply to Kratom leaves. Different batches of kratom gives a variety of potency and people has different sensitivity, these are only rough guidelines and you should begin with a low dose whenever using a new batch. Even in small doses it may produce adverse effects like prolonged vomiting and some people find it very sensitive to kratom. Discontinue the use of this herb and find an alternative if this happens.

Between 2-6g is a recommended starting dose, this should produce mild, stimulant like effects.

You may feel either stimulant like kratom powder effects or sedative effects if taking it in 7-15g and it is dependent on the person and their tolerance level.  It is too much for people who are very sensitive to kratom because it produces strong sedative effects if taken in 16-25g.  Very strong sedating effects can be experienced if you take it 26-50g and it is too much for most people.

Falling asleep is the biggest risk so it should be mixed with any other drug or herb when taking it. Because of this after using kratom, you should never operate any machinery or drive. Even you feel stimulated, you should be aware that you may extremely sleepy quickly.

It is not addictive if it is used carefully, but there have been reports that some people became dependent to kratom. There is almost no risk of becoming dependent if using this occasionally. View http://en.wikipedia.org/wiki/Mitragyna_speciosa to learn more about the scientific facts of kratom.