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Generic name: tetrahydrozoline ophthalmic [TE-tra-hye-DROZ-oh-leen-off-THAL-mik]
The brand names are: Altazine, Optigene 3, Visine, Geneye Extra, Geneyes,…
Classification of drugs: ophthalmic antihistamines and decongestants

What is Altazine?

Tetrahydrozoline is a vasoconstrictor. It works by narrowing the swollen blood vessels in the eye to lessen the eye's redness.Altazine (for the eyes) is used to treat temporary discomfort from small eye redness, swelling, or drainage triggered by minor irritations.Altazine is also employed for other purposes that are not covered in this medication guide.

Side effects of Altazine

Contact a medical professional immediately. If you experience any of the following symptoms, they are warning signs of an allergic reaction: symptoms of hives: breathing difficulties and swelling of your lips, face, and tongue.

Altazine may cause serious side effects. Take a break from Altazine and contact your doctor immediately if you suffer from:

  • Chronic or worsening redness in the eyes;
  • Eye discomfort;
  • Changes in your vision
  • Chest pain, rapid or irregular heart rate,
  • A severe headache that causes a buzzing sensation in your ear, anxiety, or feeling tired

Common adverse effects of Altazine could include:

  • Slight burning or stinging in the eye;
  • Eyes that are blurred, eyes with watery lenses,
  • Pupils with dilation.

This isn't a complete list of possible side effects, and other side effects could be present. Consult your physician to seek medical advice on the effects. You can report adverse reactions to the FDA at 1-800-FDA-1088.


Altazine provides temporary relief for minor eye irritation or irritation caused by minor irritations.Stop taking Altazine and contact your doctor immediately if you experience ongoing or worsening redness of the eyes, eye pain, or vision changes.

Prior to use this drug

You shouldn't use Altazine if you are sensitive to it.

Consult a pharmacist or doctor about whether it is safe to take this medication in the event of any other medical conditions, including:

  • Glaucoma;
  • The heart condition, high blood pressure;
  • Diabetes;
  • A thyroid disorder;
  • An eye injury, or an infection.

It isn't known if Altazine could harm a newborn baby. Inform your physician if you are expecting or planning to become pregnant while taking this drug.It isn't clear if tetrahydrozoline ophthalmic is absorbed into breast milk or whether it can harm the nursing infant.See your physician if have a baby in your care.

How to take Altazine?

Follow the directions on the label or as recommended by your physician. Don't use in greater than smaller quantities or for a longer period than is recommended.If you take the medication excessively or frequently, it can aggravate your symptoms and result in damage to veins in the eyes.Wash your hands thoroughly prior to applying drop drops to your eyes.

To apply eye drops:

  • Adjust your head a bit and then pull the lower eyelid, creating a tiny pocket. Keep the dropper over the eye, with the tip downwards. Take a look towards the sky off the dropper and squeeze one drop.
  • Close your eyes by gently pressing your fingers into the inside of your eye for around one minute, in order to stop the tear from draining out of the tear drain.
  • Make sure to use only the number of drops that are recommended.

Don't touch the tip of the dropper for your eyes, or put it directly in your eye. Drops contaminated with bacteria could cause eye infections and severe vision issues.Avoid using the eye drops if they have changed colour or contain particles.Keep it at room temperature, far from heat and moisture. Don't freeze. Close the bottle when not being used.

What happens if I miss the dose?

Because Altazine is a medication that can be used in the event of need, it is possible that you are not following a regular dosing regimen. If you're following a regimen, take the dose you missed as quickly as you can remember. Avoid any missed doses if it's nearing the time for the next dose scheduled. Take no extra medications in order to replace the dose you missed.

What happens if I overdose?

The overdose of tetrahydrozoline, an ophthalmic medication, is not likely to pose a risk. Get medical attention immediately, or contact the poison help line at 1-800-222-1222 if you have accidentally taken the medication.Make sure to keep Altazine away from kids' reach. Certain eye medicines can cause serious medical issues in an infant who swallows or sucks up drops of eye medication.

What should be avoided?

Do not take this medicine when using contact lenses. Altazine can contain a preservative that could alter the colour of contact lenses. Make sure you wait at least 15 minutes after taking this medication before inserting contacts.

Interaction with other drugs

It's not likely that other drugs you consume by mouth or inject could affect the tetrahydrozoline in your eyes. However, many medications can interfere with each other. Inform your healthcare professionals about all medications you take, including medications that are prescribed and available over the counter, vitamins, and herbal remedies.