Urinary & kidney Dogs & Cats

Semintra for dogs and cats

Treats high blood pressure in cats and protein loss in the urine with kidney disease. [1]

Last reviewed: October 2026 · 2 sources · see sources

Quick answerSemintra (telmisartan) is a prescription medicine for dogs and cats. An angiotensin receptor blocker that relaxes blood vessels and protects the kidney filters. The most common side effects: vomiting, diarrhea, low appetite, low blood pressure and low energy.

Key facts

Generic nameTelmisartan
Common brand namesSemintra
Used inDogs & Cats
TypeUrinary & kidney
Prescription?Prescription
Typical US priceNot listed (no reliable public source)

What it's used for

Treats high blood pressure in cats and protein loss in the urine with kidney disease. [1]

How it works

An angiotensin receptor blocker that relaxes blood vessels and protects the kidney filters. [1]

Side effects and cautions

Common side effects: Vomiting, diarrhea, low appetite, low blood pressure and low energy. [1]

Use with care: Not for dehydrated or pregnant pets or pets with low blood pressure. [1]

Call your vet right away if your pet has trouble breathing, facial swelling, hives, collapse, or any side effect that is severe or getting worse.

About dosingDosing is your vet's call. We don't list doses because the right amount depends on your pet's weight, age, health and other medicines. Don't change a dose or stop a medicine without asking your vet, and never give a pet medicine meant for people unless your vet tells you to [2].

What it costs

We don't list a price for this one because we couldn't find a reliable public source. Ask your vet or pharmacy for a quote; prices depend on your pet's size, the dose and where you fill it.

Semintra FAQ

What is Semintra used for in dogs and cats?

Treats high blood pressure in cats and protein loss in the urine with kidney disease.

What are the side effects of Semintra?

Vomiting, diarrhea, low appetite, low blood pressure and low energy.

Does Semintra need a prescription?

Yes. It needs a prescription from a veterinarian.

How much Semintra should I give my pet?

Only your veterinarian can tell you. The right dose depends on your pet's weight, health and other medicines, so we don't list doses. Never give a pet a medicine prescribed for a person or another animal without asking your vet.

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This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.

Sources (2) — tap to show
  1. VCA Animal Hospitals – Telmisartan (veterinary drug handout)
  2. FDA – Frequently asked questions about animal drugs