Visine contains tetrahydrozoline hydrochloride, which is a vasoconstrictor that works by narrowing blood vessels. This can help to reduce redness and swelling in the eyes, but it can also have other side effects, including:
* Tachycardia (rapid heart rate)
* Hypertension (high blood pressure)
* Seizures
* Coma
In addition, visine is not effective at treating eye infections or other serious eye problems in dogs. If your dog is experiencing eye irritation or redness, it is important to take them to the veterinarian for diagnosis and treatment.
Here are some tips for preventing eye irritation in dogs:
* Keep your dog's eyes clean and free of debris.
* Avoid using harsh chemicals or cleaners near your dog's eyes.
* If your dog is exposed to smoke, dust, or other irritants, rinse their eyes with cool water.
* If your dog is experiencing eye pain or discomfort, take them to the veterinarian immediately.