About

World’s number 1 herbal bronchial formula*

Millions of patients worldwide have trusted our exclusive Ivy Leaf Extract EA 575® for over 75 years.

Prospan® is clinically researched to relieve chesty coughs by loosening mucus associated with colds or mild bronchitis.

Prospan® is produced with patented methods that contribute to the uniqueness of the extract and help to ensure the consistency of its composition and product quality.

Don’t just stop your cough. Help clear it with Prospan®

We are what we do for others

Caring, a spirit of discovery, and passion – all of this has been at the heart of our family business for generations.

For five generations now, we have been committed to responsible products and health – wholeheartedly.

As a family business, we know how important health is: for our patients, but also for ourselves, our employees, our families, and our children. Working to make a difference is our goal.

Health means the world to us. And that's what makes us unique.

Care with passion

The love for one's child is boundless – as are the worries that arise when they are not well. Dr. Karl Engelhard experienced this firsthand in the 1940s: His daughter Gloria contracted whooping cough, and none of the usual treatments provided relief. Fear for his child kept the pharmacist from finding peace, so he began to search for a solution himself – and his tireless commitment to his daughter's well-being was rewarded. After intensive research and many experiments, he discovered the special properties of ivy to help relieve cough symptoms and support respiratory comfort.

We work for health

The initial experiments were promising, so Dr. Karl Engelhard pooled all available resources in a specially assembled research team – and promising results followed. Together, they succeeded in producing a special extract in a drop form to help support Gloria’s recovery.

Thanks to this pioneering work, Prospan® was launched on the market in 1950. Through ongoing research in the field of phytotherapy, the formula has undergone continuous development over the years.

Today, millions of patients worldwide trust and rely on Prospan®.

What makes our products so exceptional

Our many years of experience

Pioneering work and spirit of research

Since the introduction of Prospan® in 1950, we have continuously researched and developed our products to meet the needs of our patients.

EA 575 extract

Our unique extract EA 575 is more potent than standard ivy.

The No. 1 worldwide

Prospan® is not only the world's
No. 1 herbal bronchial remedy, but
also the best-selling children's
syrup in Germany*.

Millions of patients trust
in the power of Prospan®.

Over 65,000 patient records

Efficacy and tolerability have
been demonstrated in
numerous clinical studies**.

SOURCES

*IQVIA Global OTC Insights, sales in LEU PUB, for the period Full Year 2025, based on pure-herbal attribute, expectorant market restricted to the CHC classes R5C, 01A3, 01A4 and 01A5, in *all geographical markets where IQVIA reports such sales, reflecting estimates of real-world activity.

** Lang et al., Planta Medica, 81(12/13), 968-974