Jens

Author & content specialist

Magic truffles, Mushroom grow kits, Kratom, Mitragynine, Salvia divinorum, Ayahuasca, LSA seeds, Peyote, San Pedro cactus, CBD, Microdosing, Harm reduction

6 years

In the field

Areas of expertise

NL + EN

Languages

Jens writes for Dutch-Smart about smartshop products, cultivation techniques and harm reduction. He has been active in the field for six years and works factually and with sources, without hype or vague promises.

His articles cover topics such as growing mushrooms and truffles, kratom, salvia divinorum, ayahuasca, LSA seeds, peyote, San Pedro cactus, CBD and microdosing. Where a product is psychoactive, harm reduction is part of the deal as standard: dosage information, set and setting, and what to do if things go wrong.

Areas of expertise

Jens's articles span five main themes, each with its own focus on how things work, safety and practical use.

Growing magic truffles & mushrooms

From beginner guides for grow kits and truffle grow kits to in-depth explanations of sclerotia, spores and the right growing conditions.

Kratom

The green, red and white vein varieties, how mitragynine works, dosage guidelines and interactions with medication.

CBD & supplements

What research does and does not show about cannabidiol, how to recognise quality and why a THC content below 0.2% is a legal requirement.

Classic psychedelic plants

Salvia divinorum, ayahuasca, LSA seeds, peyote and San Pedro cactus, including their traditional use within ethnobotany and the risks of self-experimentation.

Microdosing

What peer-reviewed research shows so far, which questions are still open and how to approach dosing protocols sensibly.

Why factual smartshop information matters

Reliable information about psychedelics and smartshop products is scarce, and what exists varies widely in quality. Jens writes from the conviction that anyone considering these products is entitled to complete information: what the product does, how it works, what a safe dose is, which medication to be careful with and when it is better to wait.

How Jens works

In six years in the field, Jens has seen which misconceptions keep coming back and which questions customers really care about. Those real-world questions are the starting point for new articles, so every text fills a genuine information gap rather than rehashing existing pages.

Sources and substantiation

Sources used

Wherever possible, Jens draws on peer-reviewed research (PubMed, PMC, Cochrane reviews), official government sources such as the Dutch Opium Act and the NVWA, and established harm-reduction organisations. For articles about psychoactive products, the literature used is traceable. That transparency is not an afterthought but a requirement for content on these topics.

About Dutch-Smart

Dutch-Smart has been active as a smartshop and headshop since 2011 and now carries more than 1,500 products. Jens is part of the permanent team that maintains that quality standard in practice.

Since

Active since 2011

HACCP

Certified

NVWA

Supervised

VLOS

Member

Webwinkelkeur

9.2 / 10

Articles by Jens

7 Oct 2026

Growing blue lotus from seed: how to germinate Nymphaea caerulea

Blue lotus is not only a herb, it's also a beautiful water lily you can grow yourself. With some pati...

7 Oct 2026

5-HTP or L-tryptophan: what's the difference?

5-HTP and L-tryptophan are often mentioned together, because they belong in the same chain. Yet they...

7 Oct 2026

Galangal or ginger: what's the difference and can you substitute them?

Galangal and ginger look alike: both rhizomes from the same plant family, with a knobby shape. Yet t...

7 Oct 2026

What is galangal? The herb from the ginger family, explained

Galangal is a rhizome from the ginger family, traditionally used in Southeast Asian cooking. In shap...

7 Oct 2026

Guarana powder or extract: which form do you choose and how do you dose it?

You can buy guarana as a powder or as a concentrated extract. They do essentially the same thing, bu...

7 Oct 2026

Guarana vs coffee: caffeine, effect and which suits you better

Guarana and coffee both contain caffeine, but the way you notice it differs. Guarana releases its ca...

6 Oct 2026

How much caffeine is in yerba mate? And why it feels different from coffee

Yerba mate contains caffeine, but people often describe the effect as different from coffee: more aw...

6 Oct 2026

How to prepare yerba mate: with a gourd, French press or tea bag

How to prepare yerba mate: with a gourd, French press or tea bag You don't drink yerba mate like regu...

30 Sep 2026

Ololiuqui (Rivea corymbosa): the classic LSA plant

Ololiuqui (Rivea corymbosa), the classic LSA plant from Mexico Ololiuqui is the name for the seeds o...