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Better sex is the only logical philosophy. Follow Serge on Twitter: @SergeKreutz


Southeast Asia is the best part of planet earth and human society

Best weather, best safety, no racism, no agism, best value, best happiness.

If your first step is in the wrong direction, you will never get there. (Serge Kreutz)

Southeast Asia is the hub of the world. OK, maybe not for military strength. Also not for economic power. And not for football, pop music, gourmet pleasures, medical inventions, or financial services. But Southeast Asia is the hub of the world for those seeking a pleasant life, or even just life-long pleasure, with the best sexual enhancement herbals to prepare for such an endeavor.

Southeast Asia maybe doesn’t have the most beautiful architecture of the world, and may not produce the most beautiful cars, but Southeast Asia has the most beautiful people.

And no other part of the world is as welcoming to foreigners from about anywhere around the world. Southeast Asian countries have gentle societies, largely void of agism, and have the most tolerant societies, respecting personal freedom and emphasizing compromise-seeking in social conflicts. There are more good reasons why it makes sense for those privileged enough to make Southeast Asia there home, regardless of where they have been born.

Southeast Asia has extreme variety. At least 10 different alphabets, and at least double that number of religions. You can have islands or mountains, beaches or jungles, leisure or adventure, beef or pork, rain or shine, and if you have transportable housing, or a motorhome, or a campervan, you can have it all, at the same time, or at least in short sequence.

Sexuality-enhancing herbals

I have started this site, asiatour.com, more than 20 years ago as a Western foreigner living in Southeast Asia. Initially, I used it as a travel site, hence the name. But I can't see a point in competing with wikis. And my interests shifted. I am now more into ethnobotany, as indeed, Southeast Asia is exceptionally rich in medicinal herbs.

Nevertheless, my prime interest is narrower than the overall improvement of my or anybody's health.

In my opinion, Southeast Asia is the best part of the world for personal relationships, especially when you get older. But to enjoy the many options, Southeast Asia offers in this respect, fine-tunig one's sexual function with appropriate herbal extracts is a most-welcome enhancement.

If you live in Europe or America, Southeast Asia itself may be a bit out of the way. But you can still benefit from Southeast Asian sexual ethnobotany.

Here at Asiatour, I now sell the best of herbal sexual enhancement this part of the world has to offer. No, the extracts are not prepared by me. Rather, I sell the assortment of herbals of Sumatra Pasak Bumi (tongkatali.org). They have been in business for about 30 years, and especially their tongkat ali extracts have set the standard for herbal sexual enhancement.

I personally am more in favor of their butea superba, but we are all different. While butea superba works best for me, some friends swear that the tongkat ali does it for them. And men with mosly erectile problems go for the krachai dam (kaempferia parviflora). Make your choice, I sell variety, and I do so at lower prices than tongkatali.org, the manufacturer.


Sumatra Pasak Bumi Prime customer

Anybody who has previously purchased directly from us for at least 1000 US dollars at retail prices qualifies as a Sumatra Pasak Bumi Prime customer and thus for wholesale conditions. This means free double quantity on any item ordered after the first purchase of 1000 US dollars or equivalent.

Sumatra Pasak Bumi Prime Plus customer

Anybody who has previously purchased from us for at least 3000 US dollars at retail prices qualifies as a Sumatra Pasak Bumi Prime Plus customer. Prime Plus customers obtain free double quantity on any item ordered, plus free consultation by Serge Kreutz (serge@sergekreutz.com) on sexual opportunities in Asia (Indonesia, Thailand, Cambodia, Philippines, Vietnam, Myanmar).


tongkat ali stamina

Label of Thai tongkat ali extract, 400 capsules


Thai Tongkat Ali, 400 capsules @ 300 mg

Superior packaging: double-layer, food-grade paper bags within a plastic container; no contiguity of our capsules with the exterior container)

Why you want superior packaging

1 bottle of 400 capsules of 300 mg (120 grams net)

Detailed dosage advice for tongkat ali extract

Recommended dosages are 2 to 6 capsules morning, noon, evening. Because a definite effect needs 10 to 20 capsules of high potency extract per day, we sell encapsulated Thai tongkat ali extract in containers of 400 capsules.


Order directly from SPB

If ordered from us directly, we ship locally in the US and in the EU. To all other countries, we ship from Thailand.

Buyers with a Sumatra Pasak Bumi order history of at least 1000 US dollars who order through Amazon receive the additional quantity directly from Thailand.

tongkat ali stamina booster

Payment through PayPal

1 bottle (400 caps), 250 USD


2 bottles (800 caps), 450 USD


4 bottles (1600 caps), 810 USD



Payment to a bank account in Thailand, Indonesia, Germany, and the UK in US dollars, euro, or pounds. Please email us for euro and pounds prices and bank details. Remittance charges would have to be paid by the sender. Remittance charges are cheap within the EU, but expensive anywhere else.

3 bottles butea 400 capsules

1 bottle (400 caps), 200 USD or equivalent

2 bottles (800 caps), 360 USD or equivalent

4 bottles (1600 caps), 648 USD or equivalent


Wholesale Thai Tongkat Ali, 400 capsules @ 300 mg

Prices for wholesale quantities do not include shipping. The free double quantity after an order history of 1000 USD or more does not apply to wholesale quantities.

50 bottles (400 caps per bottle) - 2700 USD (54 USD per bottle)

100 bottles (400 caps per bottle) - 4860 USD (48.60 USD per bottle)

200 bottles (400 caps per bottle) - 8748 USD (43.74 USD per bottle)


Tongkat ali sexual

Label of Thai tongkat ali extract, 250 grams


Thai Tongkat Ali, 250 grams loose extract powder

Double-layer, food-grade paper bags within a plastic container; no contiguity of our extract with the exterior container

Why you want superior packaging

1 bottle of 250 grams loose extract powder (not capsules)

Detailed dosage advice for tongkat ali extract

Effective dosages are 1 to 3 grams morning, noon, evening. Unfortunately, the taste of tongkat ali is just miserable (to put it mildly). In the case of tongkat ali, capsules make sense just to bypass the taste. But of course, as with all our products, loose extract powder is more economical. If a buyer decides for loose extract powder, it is best to mix one's dosage into a sour orange or lemon juice.


Order directly from SPB

If ordered from us directly, we ship locally in the US and in the EU. To all other countries, we ship from Thailand.

Buyers with a Sumatra Pasak Bumi order history of at least 1000 US dollars who order through Amazon receive the additional quantity directly from Thailand.

Payment through PayPal

1 bottle, 250 USD


2 bottles, 450 USD


4 bottles, 810 USD



Payment to a bank account in Thailand, Indonesia, Germany, and the UK in US dollars, euro, or pounds. Please email us for euro and pounds prices and bank details. Remittance charges would have to be paid by the sender. Remittance charges are cheap within the EU, but expensive anywhere else.

3 bottles butea 400 capsules

1 bottle, 200 USD or equivalent

2 bottles, 360 USD or equivalent

4 bottles, 648 USD or equivalent


Wholesale Thai Tongkat Ali, 250 grams loose extract powder

Prices for wholesale quantities do not include shipping. The free double quantity after an order history of 1000 USD or more does not apply to wholesale quantities.

50 bottles (250 grams per bottle) - 3850 USD (77 USD per bottle)

100 bottles (250 grams per bottle) - 6930 USD (69.30 USD per bottle)

200 bottles (250 grams per bottle) - 12,474 USD (62.37 USD per bottle)


Krachai dam penis


You will find that tongkat ali and butea superba combined is much stronger than each by itself


Some herbal medicines are commonly known by local names, and others by scientific names. As I have observed, it's just a question of what name is shorter, and of what you can remember more easily.

Read more

Qualia, emotionally tagged memory


What is the correlation between physical processes and our conscious perception of feeling and emotions. Physical processes are the actions of neurons, for example when we feel pain. An experience why pain feels like pain has been named qualia. The experience of pain isn’t sufficiently explained by the actions of neurons

Read more


Label of butea superba extract, 400 capsules


Butea Superba, 400 capsules @ 400 mg

Superior packaging: double-layer, food-grade paper bags within a plastic container; no contiguity of our capsules with the exterior container)

Why you want superior packaging

1 bottle of 400 capsules of 400 mg (160 grams net)

Detailed dosage advice for butea superba extract

Recommended dosages are 2 to 6 capsules morning, noon, evening. Because a definite effect needs 10 to 20 capsules of high potency extract per day, we sell encapsulated butea superba extract in containers of 400 capsules.


Order directly from SPB

If ordered from us directly, we ship locally in the US and in the EU. To all other countries, we ship from Thailand.

Buyers with a Sumatra Pasak Bumi order history of at least 1000 US dollars who order through Amazon receive the additional quantity directly from Thailand.

3 bottles butea 400 capsules

Payment through PayPal

1 bottle (400 caps), 250 USD


2 bottles (800 caps), 450 USD


4 bottles (1600 caps), 810 USD



Payment to a bank account in Thailand, Indonesia, Germany, and the UK in US dollars, euro, or pounds. Please email us for euro and pounds prices and bank details. Remittance charges would have to be paid by the sender. Remittance charges are cheap within the EU, but expensive anywhere else.

3 bottles butea 400 capsules

1 bottle (400 caps), 200 USD or equivalent

2 bottles (800 caps), 360 USD or equivalent

4 bottles (1600 caps), 648 USD or equivalent


Wholesale Butea Superba, 400 capsules @ 400 mg

Prices for wholesale quantities do not include shipping. The free double quantity after an order history of 1000 USD or more does not apply to wholesale quantities.

50 bottles (400 caps per bottle) - 2700 USD (54 USD per bottle)

100 bottles (400 caps per bottle) - 4860 USD (48.60 USD per bottle)

200 bottles (400 caps per bottle) - 8748 USD (43.74 USD per bottle)


Krachai dam penis


Butea libido

Label of butea superba extract, 400 grams


Butea Superba, 400 grams loose extract powder

Double-layer, food-grade paper bags within a plastic container; no contiguity of our extract with the exterior container

Why you want superior packaging

1 bottle of 400 grams loose extract powder (not capsules)

Detailed dosage advice for butea superba extract

Effective dosages are 1 to 3 grams morning, noon, evening. The taste of butea superba extract isn't very intense. Butea superba extract can be used in cooking, or it can be mixed into orange juice.


Order directly from SPB

If ordered from us directly, we ship locally in the US and in the EU. To all other countries, we ship from Thailand.

Buyers with a Sumatra Pasak Bumi order history of at least 1000 US dollars who order through Amazon receive the additional quantity directly from Thailand.

Payment through PayPal

1 bottle, 250 USD


2 bottles, 450 USD


4 bottles, 810 USD



Payment to a bank account in Thailand, Indonesia, Germany, and the UK in US dollars, euro, or pounds. Please email us for euro and pounds prices and bank details. Remittance charges would have to be paid by the sender. Remittance charges are cheap within the EU, but expensive anywhere else.

3 bottles butea 400 capsules

1 bottle, 200 USD or equivalent

2 bottles, 360 USD or equivalent

4 bottles, 648 USD or equivalent


Wholesale Butea Superba, 400 grams loose extract powder

Prices for wholesale quantities do not include shipping. The free double quantity after an order history of 1000 USD or more does not apply to wholesale quantities.

50 bottles (400 grams per bottle) - 3850 USD (77 USD per bottle)

100 bottles (400 grams per bottle) - 6930 USD (69.30 USD per bottle)

200 bottles (400 grams per bottle) - 12,474 USD (62.37 USD per bottle)


You need butea superba because every day in your life with less than 2 hours of sex is a lost opportunity.

Your wife can climax. Take my word for it


Butea superba, for example, can increase libido. If your wife has more sexual desire, and does not just consider intercourse as a service she provides for you, her orgasm threshold will be lower.

Read more

Sexuality as principle force in life


I have a metaphysical opinion of sex. It is the essence of life, its only real value. Everything else is subordinate.

Sex is not just entertainment. It is on a level with what religious service was in times when religions were still plausible.

Read more



Krachai dam powder label libido

Label of kaempferia parviflora extract, 400 capsules


Kaempferia Parviflora, 400 capsules @ 400 mg

Superior packaging: double-layer, food-grade paper bags within a plastic container; no contiguity of our capsules with the exterior container)

Why you want superior packaging

1 bottle of 400 capsules of 500 mg (200 grams net)

Detailed dosage advice for kaempferia parviflora extract

Recommended dosages are 2 to 6 capsules morning, noon, evening. Because a definite effect needs 10 to 20 capsules of high potency extract per day, we sell encapsulated kaempferia parviflora extract in containers of 400 capsules.


Order directly from SPB

If ordered from us directly, we ship locally in the US and in the EU. To all other countries, we ship from Thailand.

Buyers with a Sumatra Pasak Bumi order history of at least 1000 US dollars who order through Amazon receive the additional quantity directly from Thailand.

Krachai dam libido

Payment through PayPal

1 bottle (400 caps), 250 USD


2 bottles (800 caps), 450 USD


4 bottles (1600 caps), 810 USD



Payment to a bank account in Thailand, Indonesia, Germany, and the UK in US dollars, euro, or pounds. Please email us for euro and pounds prices and bank details. Remittance charges would have to be paid by the sender. Remittance charges are cheap within the EU, but expensive anywhere else.

3 bottles butea 400 capsules

1 bottle (400 caps), 200 USD or equivalent

2 bottles (800 caps), 360 USD or equivalent

4 bottles (1600 caps), 648 USD or equivalent


Wholesale Kaempferia Parviflora, 400 capsules @ 500 mg

Prices for wholesale quantities do not include shipping. The free double quantity after an order history of 1000 USD or more does not apply to wholesale quantities.

50 bottles (400 caps per bottle) - 2700 USD (54 USD per bottle)

100 bottles (400 caps per bottle) - 4860 USD (48.60 USD per bottle)

200 bottles (400 caps per bottle) - 8748 USD (43.74 USD per bottle)


Krachai dam penis


Kaempferia Parviflora, 450 grams loose extract powder

Superior packaging: double-layer, food-grade paper bags within a plastic container; no contiguity of our capsules with the exterior container)

Why you want superior packaging

1 bottle of 450 grams loose extract powder (not capsules)

Detailed dosage advice for kaempferia parviflora extract

Effective dosages are 1 to 3 grams morning, noon, evening. In Thailand, kaempferia parviflora extract is a food item added in cooking. It also goes well with curries. I has a more earthy taste than yellow ginger.


Order directly from SPB

If ordered from us directly, we ship locally in the US and in the EU. To all other countries, we ship from Thailand.

Buyers with a Sumatra Pasak Bumi order history of at least 1000 US dollars who order through Amazon receive the additional quantity directly from Thailand.


Payment through PayPal

1 bottle, 250 USD


2 bottles, 450 USD


4 bottles, 810 USD



Payment to a bank account in Thailand, Indonesia, Germany, and the UK in US dollars, euro, or pounds. Please email us for euro and pounds prices and bank details. Remittance charges would have to be paid by the sender. Remittance charges are cheap within the EU, but expensive anywhere else.

1 bottle, 200 USD or equivalent

2 bottles, 360 USD or equivalent

4 bottles, 648 USD or equivalent


Wholesale Kaempferia Parviflora, 450 grams loose extract powder

Prices for wholesale quantities do not include shipping. The free double quantity after an order history of 1000 USD or more does not apply to wholesale quantities.

50 bottles (450 grams per bottle) - 3850 USD (77 USD per bottle)

100 bottles (450 grams per bottle) - 6930 USD (69.30 USD per bottle)

200 bottles (450 grams per bottle) - 12,474 USD (62.37 USD per bottle)



High sexual risk makes women monogamous


Conventional wisdom is that men want sex, and women want resources and commitment.

Evolutionary biologists have done questionary-based studies in many countries of the world, and found this to be a universal pattern.

Read more

Durian addiction and optimal health


Durian addiction is real, and unlike any other addiction, it is neither dangerous, nor detrimental to health.

Quite the opposite. Durians are great for health. They contain many vitamins, even of the B category that otherwise is common only in meats, not in plant-derived food.

Read more

A gentle society, on practical, not moral grounds


All moral values are perceived values. They are arbitrary. The moral values of current democratic societies are no more correct than the moral values of slave-holding ancient Rome, or of a cannibal Melanesian society 200 years ago. They are just different.

Read more

A crime never punished - selling fake butea superba and tongkat ali on eBay


I am often amazed how easily people can be fooled on trade platforms like eBay. One of the latest scams I have seen is that petty criminals sell alleged butea superba or tongkat ali extract.

Read more

Sexual unions of economic benefit


For millennia, marriages were much more than liaisons for sexual pleasure. They were unions to tackle the challenges of everyday life. And they were unions of economic necessity.

Read more



Deep libido and prolonged orgasm with butea superba


Compared with tongkat ali, butea superba has a faster onset of efficacy. Some people may feel its influence even on a small first dosage.

A certain degree of deepness of emotion is the most likely first manifestation of butea superba.

Read more

Sexual exploits


Men are in search of sexual exploits. But bear in mind that “exploits” is not equivalent to “exploitation”.

Black Africans were exploited as slaves in the Americas. Children are exploited when they are forced to work in sweatshops. Women who are forced into prostitution are exploited.

Read more