"Diphenhydramine": instructions for use, form of release, analogues

Today it is difficult to find a person who would not be familiar with allergies. Harmless at first glance, the phenomenon can lead to serious consequences. That only there is an anaphylactic shock, which can result in a fatal outcome. Therefore, it is very important to immediately provide medical care to the patient at the first symptoms of an allergy. A high-quality antihistamine will come to the rescue. It will stop the development of an allergic reaction and normalize the condition of the whole organism.

Among the specialists, the drug "Diphenhydramine" is very popular. The instruction for use describes the reception rules as well as the indications.

Pharmacological information

The drug has anti-allergic, antiemetic effect. Also has sedative, hypnotics and local anesthetics. It blocks histamine receptors. The drug lowers and clears histamine-induced muscle spasms, swelling of the tissues, redness, itching and rash. When the drug enters the body, there is a feeling of numbness in the mucous membranes in the mouth. With many diseases, a medical tool called Diphenhydramine can help. Instructions for use should be studied before starting treatment.

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diphenhydramine instructions for use

The main active ingredient blocks the cholinergic receptors of vegetative ganglia, thereby reducing pressure. If the medicine gets inside, hypotension may increase in patients with impaired blood volume. Therefore, you need to monitor the pressure indicators. In patients suffering from epileptic seizures, seizures may begin. The drug perfectly copes with bronchospasm, reduces cough reflex. The preparation "Diphenhydramine" very well shows itself at attacks of a bronchial asthma. Instructions for use will help you determine the correct dosage.

Action of the drug in the body

When ingested, the product dissolves and absorbed in a short time. The maximum active effect occurs an hour after administration. Almost 100% is combined with blood proteins. Most of the drug is split in the liver, the rest is excreted in the urine within 24 hours.

Diphenhydramine instructions for use ointment The duration of action of the drug reaches 6 hours. If a nursing mother takes this medicine, the child may develop a hypnotic and sedative effect. Therefore, during lactation, the medication can only be used after consultation with the pediatrician. Pregnant women should not use Diphenhydramine. Instructions for use, form of release, analogs - all this information should be studied before starting treatment.

Use of

There are many conditions in which it is advisable to take the drug "Definhydra".This urticaria, dermatosis, which causes severe itching, vasomotor rhinitis, allergic conjunctivitis, serum sickness, allergic reactions to the administration of the drug.

Diphenhydramine instruction on the use of analogues A medication is prescribed for anaphylactic shock during transfusion of erythrocyte mass and blood substitutes. In the complex treatment of radiation sickness, medicament can also be used.

The medicine "Define Hydra" is used as a local anesthetic, during flights and sea trips - as an antiemetic.

Must be examined before using Diphenhydramine. Instruction for use. Ointment is also used widely enough. The drug in this form helps to ease pain with sunburn, while biting insects. Ointment quickly eliminates the rash, which is manifested due to an allergic reaction.


If it is strongly susceptible to components of the drug, it can not be used. During feeding, it is not recommended to take this medication, it will cause drowsiness in the baby. No medication is given to newborns.

diphenhydramine instructions for use Synonyms The drug is contraindicated in glaucoma, prostatic hypertrophy, in the acute period of peptic ulcer and gastritis, with stenosis of the neck of the bladder. With great care is assigned to under-age patients.

The drug is contraindicated in chronic kidney and liver processes. Before the start of therapy, it is necessary to thoroughly study all contraindications to the drug "Diphenhydramine".Instructions for use all describe in detail.

Side effects of

From the side of the nervous system, such phenomena as weakness, drowsiness, decreased attention, fatigue, dizziness, headache, impaired coordination of movement, anxiety, increased excitability can be observed.

Diphenhydramine instructions for use in ampoules From the cardiovascular system: lowering of pressure, palpitations, tachycardia, thrombocytopenia, hemolytic anemia. From the gastrointestinal tract there is dry mouth, numbness of the mucous membrane, nausea, vomiting, diarrhea, constipation, weight loss.

On the part of the kidneys, there may be a delay in urination, frequent urination in the toilet or complete absence of urine. Also, dryness of the nose and throat, nasal congestion, viscosity of the sputum from the bronchi may occur. Another can develop increased sweating, a fear of light. Very often allergic reactions occur in the form of rash, hyperemia and itching. There are many side effects of the drug "Diphenhydramine".Instructions for use, analogs, possible side reactions - all this should be studied before starting therapy.

Drug overdose

If the medicine is taken incorrectly, excitation or, vice versa, depression of the nervous system, redness of the skin, loss of consciousness, dryness of the mucous membranes, it becomes difficult to breathe. When an overdose of the drug is carried out detoxification therapy. The patient is rinsed stomach, put enemas, give an absorbent. In addition, sterile preparations of glucose and saline are used in the form of droppers.

diphenhydramine instructions for use form of release It is necessary to measure the pulse and pressure. The condition, which is caused by an overdose of the drug, requires constant monitoring of the doctor and junior medical personnel. Therefore, such patients are treated in the intensive care unit before the normalization of the condition. Dosage regimens should be strictly followed using Diphenhydramine. Instructions for use, synonyms, contraindications - all this will tell the doctor.

Dosage of the drug "Diphenhydramine"

The drug has several uses. These are intramuscular and intravenous injections, a rectal method. There is a medicine in the form of drops and ointments. Orally, adults are prescribed 30-50 mg of the drug three times a day. From motion sickness it is necessary to drink medicine one hour before the forthcoming trip. To eliminate insomnia before bedtime, you need to use 50 mg of the drug. In a day, you can take no more than 150 mg of medication, otherwise symptoms of overdose may appear. The permissible dose per dose is 50 mg. Intravenously, the drug is administered in physiological saline at a dose of up to 50 mg. The course of medical treatment should not exceed 10 days.

Widely used eye drops "Diphenhydramine".In this form, the medication is used up to five times a day. Ointment or gel with the drug "Diphenhydramine" is applied a thin layer on the skin four times a day.

The dose is determined by the physician individually. Do not take Diphenhydramine yourself. Instructions for use in ampoules include calculation of dosage and methods of drug administration.

How to replace the drug "Diphenhydramine"

Many patients are happy with the treatment with this particular drug. In a short time, it helps to get rid of many allergic symptoms. Well tolerated by the body. Only in very rare cases may there be side effects.

Diphenhydramine instruction on the use of the tablet What if I could not find the drug "Diphenhydramine" in the pharmacy? Instructions for use( tablets, drops, ointment) contains information on the composition. Based on this information, a specialist will easily select a quality analog. There is a huge list of drugs that have a similar effect on the body. Such means as Betadrin, Polinadim, Psychalzam, Cophanol, Valemidin, Pentaflucin and many others are popular.