With the modern rhythm of life, full of various irritants and screen radiation, our eyes are especially affected. The feeling of fatigue, burning and dryness in them is familiar to very many. In such cases, an excellent assistant for relieving unpleasant symptoms can be a drug that is available in the form of eye drops - tetrizoline hydrochloride.
Description of the substance
It is a clear, colorless, odorless liquid. The substance is easily soluble in water and alcohol, has a pH of 5.0 - 6.5.
Issue form
Tetrizoline hydrochloride is available as:
- Eye drops.
- Nasal drops.
- Nasal spray.
Mechanism of action
The mechanism of action of tetrizoline hydrochloride on the eyes is that under its action alpha-adrenergic receptors are excited, resulting in a decrease in edema, elimination of burning and itching, and cessation of lacrimation.
Indications for use
Due to this mechanism of action, tetrizoline hydrochloride drops can be used forredness and swelling of the mucous eyes of any etiology. For example:
- Irritation of the conjunctiva of the eyes due to dust, smog, any strong chemical irritants (varnishes, paints, household chemicals, drugs).
- Indications should also include inflammation of the mucous membrane of the eyes of allergic origin.
- Tetrizoline hydrochloride can be used as an adjuvant for various infectious lesions of the sclera and conjunctiva.
- Among other things, the drug is able to effectively eliminate the burning sensation and sand in the eyes.
- In addition, tetrizoline hydrochloride relieves swelling and pain in the eyes.
Contraindications for use
Although the drug is applied topically, it still has a fairly pronounced effect on the human body. Therefore, there are a number of contraindications in which the use of these eye drops is prohibited. This includes:
- The patient has an allergic reaction to any of the components of the drug. This can be either a reaction to the main active ingredient or to auxiliary components.
- Since tetrizoline hydrochloride is an alpha2-agonist (it excites these receptors), when using the drug, its ability to narrow the vessels of the eye should be taken into account. Indeed, as a result of this, a slight increase in eye pressure may occur. And if for a he althy person this is not noticeable, then for a person suffering from glaucoma it is very noticeable and even dangerous. Therefore, the drugprohibited for use in eye diseases that are accompanied by an increase in eye pressure.
- Contraindications also include diseases such as keratoconjunctivitis and dystrophy of the outer shell of the eye.
- It is forbidden to use the drug for the treatment of children under three years of age.
Side effects
Like any other drug, tetrizoline hydrochloride eye drops can have a negative effect on the human body, causing a number of unwanted side reactions. Namely:
- pupil dilation,
- increased pressure inside the eyeball,
- redness of the mucosa,
- burning sensation and discomfort.
As you can see, all these reactions are local. They go away on their own after the drug is stopped.
However, some systemic side effects are also indicated in the instructions for use:
- headache,
- fatigue,
- fatigue,
- sleep disorder, insomnia,
- high blood pressure,
- nausea, vomiting,
- development of an allergic reaction in the form of a rash on the skin.
Use during pregnancy and lactation
The instructions contain information that, if necessary, the doctor may prescribe the drug to a pregnant woman, but the ratio of possible benefit to the mother and risk to the fetus should be taken into account.
The woman who feedsbreastfeeding, can use tetrizoline hydrochloride when prescribed by a doctor. However, it is worth taking into account the fact that there are currently no official studies that could prove the safety of the use of the drug by lactating women.
Dosing regimen
As a rule, the drug is instilled into the conjunctival sac of the diseased eye two to four times a day, one or two drops at a time.
If the patient wears contact lenses, they must be removed before using the drug and put on 15 minutes after instillation of the drug. The fact is that the product contains benzalkonium chloride, which can change the color of the lens.
The duration of the course depends on the diagnosis and can be prescribed by the doctor individually for each patient. As a rule, the course of treatment with tetrizoline hydrochloride is 7-10 days.
Analogues
On the modern pharmaceutical market, there are several analogues of tetrizoline hydrochloride. Let's take a look at some of them.
"Vizin"
A Russian-made drug is one of the most popular representatives of eye drops based on tetrizoline. It is characterized by a rapid onset of a therapeutic effect. The patient notices an improvement in well-being within a minute after applying the drops. As a rule, the effect lasts about 7 hours.
In addition to the dropper bottle, the drug has another form of release - disposable dropper tubes. It is very comfortable. First, it is keptsolution sterility. Secondly, you can take them with you.
"Montevisin"
Another drug based on tetrizoline hydrochloride for the eyes. An analogue of "Vizina", which is produced by a Serbian pharmaceutical company called Hemofarm A. D.
The main advantage is the lower price. One tube of "Vizin" containing 15 ml of solution costs 290-340 rubles, and 10 ml of "Montevisin" costs 140-190 rubles.
The list of indications, contraindications and unwanted side effects is similar for both drugs.
Reviews about the drug
If you study in detail the reviews of patients who have been treated for various ophthalmic diseases with tetrizoline hydrochloride, you can see that most of them are positive.
The main plus that people highlight is the rapid onset of a noticeable improvement and the long-term continuation of the therapeutic effect.
Second is the presence of several brands, so the patient always has a choice of which drug to buy.
The third advantage of using these drops is the almost complete absence of any side effects. A very small percentage of people have experienced burning and stinging around the eyeballs.
Terms of dispensing from pharmacies
Tetrizoline hydrochloride eye drops are prescription drugs. This means that in freecan't find them available. In order to purchase them, you should contact your doctor, who, if he deems it necessary, will write out a prescription of a strictly defined form (form number 107-1 / y).
Before dispensing a drug from a pharmacy organization, a pharmacist (or pharmacist) will definitely ask for a prescription and check it for correctness. After that, drops of tetrizoline hydrochloride will be sold to the buyer.
Terms and conditions of storage
Eye drops should be stored in a dry place, protected from direct sunlight, at an air temperature not exceeding 25 degrees.
Adults should ensure that medication is always kept out of reach of small children.
An unopened vial can be stored for three years from the date of manufacture.
An opened vial with drops must be used within 28 days, after which the drug loses its sterility and becomes unusable.
In the case of using the medicine "Vizin" in the form of disposable dropper tubes, the unused contents of each of them must be disposed of immediately.
Conclusion
The drug to which this article is dedicated can be a great helper for tired and sore eyes. Tetrizoline hydrochloride drops are a very effective drug for the treatment of many ophthalmic diseases.
The drug is presented on pharmacy shelves in the form of several trade names of different manufacturers and price categories. This allows the patientchoose a more suitable option for him.
