Skip to main content Skip to search Skip to main navigation
Product Advisor

Horsetail and silica for dogs


Horsetail & silica for dogs

Field horsetail (Equisetum arvense) and silica have one thing in common: both are natural sources of silicic acid, and therefore of the trace element silicon.

Horsetail » a living fossil

Horsetails are among the oldest plants on Earth. More than 300 million years ago, their ancestors grew as forests the height of trees, from which part of our hard coal was formed. Today's field horsetail, by contrast, is only knee-high and grows along field edges and in damp meadows.

Its old German name Zinnkraut, "pewter herb", tells of its silicic acid content: it was once used to scour pewter tableware, because the silicic acid in the stems acts like fine sandpaper.

The green, sterile summer shoots are used. Reliable identification is important, because the related marsh horsetail looks similar but is poisonous. That is why horsetail is botanically checked before processing.

Silica » silicon from the earth

Silica refers to finely ground silicon dioxide. It is often obtained from diatomaceous earth, the deposits of the shells of tiny fossil diatoms. It is a white, taste-neutral powder.

What horsetail is valued for in your dog's diet

Horsetail and silica provide silicic acid.

What makes silicon special

After oxygen, silicon is the second most common element in the Earth's crust. In the body, it is a trace element and is found mainly in connective tissue, skin, hair and claws. Plants such as horsetail build silicic acid into their cell walls, giving themselves strength.

Origin and quality

We have worked with the same regular suppliers for many years. Their goods are tested for residues and are additionally examined by independent laboratories before they go into production.

Where we use horsetail and silica

Field horsetail and silica are ingredients of DOG FIT by PreThis® VITAL regeneration. Horsetail extract is also contained in DOG FIT by PreThis® VITAL shine plus.

Frequently asked questions about horsetail and silica

Our recommendation


DOG FIT by PreThis® VITAL regeneration
From €25.95
4.9 (13)

Collagen, L-lysine plus bioflavonoids for dogs with musculoskeletal issues, such as vertebrae, intervertebral discs, ligaments & fascia.

Content: 60 caps. » 0,021 kg (€1,235.71 / 1 kg)
DOG FIT by PreThis® VITAL shine plus
From €16.95
5.0 (19)

Visible care: With Omega-3 for a shiny coat and well-groomed skin, plus cell-strengthening nutrients for eyesight and normal heart function.

Content: 60 caps. » 0,024 kg (€914.58 / 1 kg)

Heart and paw


Veterinary Expertise at the Heart of Our Team

Dr. Sibylle Ott, MD, veterinarian, plays a central role in our team at DOG FIT by PreThis®. As an experienced veterinarian with naturopathic expertise, she contributes significantly to the development of our products. Her experience and deep understanding of dogs' needs flow into many of the formulas we create. She is a valuable asset to our team and to the well-being of many dogs.

Dr. med. vet. Ott

This content is for information only and does not replace advice from a vet. Our products are complementary feed for dogs. They do not replace a veterinary examination or treatment. If your dog has any health problems, please contact your vet.

🐾 Dogs love cookies too 🐾

Cookies aren't bad! Some make sure our website works. Others help us analyse the website, improve your experience with us and show you relevant ads, including through partners such as Google and Meta. Please give us your consent by clicking "Ok, let's go". 🐕 You can change your choice at any time under "Cookie settings" at the bottom of the page.

Cookie settings

Loading settings.