At Vanan Herbal, your health is our priority. We’re proud to introduce Drs. Han Siem, a pharmacist with over 30 years of experience and a specialist in interactions between regular medicines, nutritional supplements, and herbs.

He runs the Huizerapotheek and de vitamineapotheek.nl, supplying top-quality supplements to over 40,000 patients in the Netherlands and Belgium. With a unique focus on medicine-supplement interactions, he collaborates with 300 therapists and has authored over 40 publications on the topic.

Now, you can verify your supplements’ safety through his expertise using this contact form to communicate with him directly.