Hydroxyzine dihydrochloride, also known as Antale, has the chemical formula C21H29Cl3N2O2, CAS 2192-20-3, The chemical name is 2- [2- [4- (4-chlorophenyl) phenylmethyl-1-piperazinyl] ethoxy] - ethanol dihydrochloride, which is an organic compound with multiple medical uses. It is a white crystalline powder, odorless, bitter in taste, easily soluble in water and ethanol, but insoluble in ether. Hydroxyzine hydrochloride exerts its sedative effect by inhibiting the activity of neurotransmitters such as dopamine and serotonin in the central nervous system. This drug can reduce cortical excitability, alleviate symptoms of emotional excitement and hyperactivity, such as irritability and restlessness, and block histamine receptors to combat allergic reactions caused by histamine. It has a relieving effect on skin itching, redness, and swelling symptoms such as urticaria and contact dermatitis. Due to its ability to affect the balance of neurotransmitters in the brain and increase the activity of gamma aminobutyric acid type A receptors, hydroxyzine hydrochloride can promote sleep. This substance is a laboratory product and is strictly prohibited from being used for other purposes.
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Chemical Formula |
C21H27ClN2O2 |
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Exact Mass |
374.18 |
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Molecular Weight |
374.91 |
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m/z |
374.18 (100.0%), 376.17 (32.0%), 375.18 (22.7%), 377.18 (7.3%), 376.18 (2.5%) |
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Elemental Analysis |
C, 67.28; H, 7.26; Cl, 9.46; N, 7.47; O, 8.53 |
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Hydroxyzine dihydrochloride, also known as Antale or Hydroxyzine, is a non benzodiazepine anti anxiety drug with multiple medical uses.
It is an effective anti anxiety medication that can be used to treat symptoms such as anxiety, tension, and agitation in neurosis, as well as anxiety and tension symptoms in physical diseases. It produces a sedative effect by inhibiting central nervous system excitability, reducing overactive nerve transmission. This drug can regulate the balance of neurotransmitters serotonin and norepinephrine in the brain, reducing anxiety caused by abnormal increases in these neurotransmitters. For patients with mild anxiety, it can significantly improve their anxiety symptoms and enhance their quality of life.
In anti anxiety therapy, the dosage is usually adjusted according to the specific situation of the patient. It is generally recommended to start with a low dosage and gradually increase it based on efficacy and tolerability. During use, it is necessary to closely monitor the patient's condition changes and possible side effects such as drowsiness, weakness, headache, etc. If the symptoms persist or worsen, it is necessary to consult a doctor in a timely manner and adjust the treatment plan.
It also has antihistamine effects, which can block histamine receptors and reduce histamine stimulation on mast cells and smooth muscle cells, thereby exerting anti allergic effects. This characteristic makes it widely used in the treatment of allergic diseases, such as urticaria, contact dermatitis and other skin itching, redness and swelling symptoms.
When treating allergic diseases, it is usually used in combination with other anti allergic drugs to enhance efficacy. At the same time, attention should be paid to the patient's allergy history and allergens to avoid further exposure to allergens that may worsen symptoms. During use, it is necessary to observe changes in the patient's condition and whether there are worsening allergic reactions or other adverse reactions.
3. Sedative effect
It has a central sedative effect, which can reduce the excitability of the cerebral cortex, alleviate symptoms of emotional excitement and hyperactivity, such as irritability and restlessness. This characteristic makes it potentially valuable in the treatment of sleep disorders such as insomnia and neurasthenia.
When treating insomnia, it can shorten the time to fall asleep, increase the total sleep time, and improve sleep quality. However, it should be noted that long-term use may lead to drug resistance and dependence, so it should be used reasonably under the guidance of a doctor to avoid abuse and misuse.
It also has a hypnotic effect, which can increase the frequency of chloride ion channel opening mediated by gamma aminobutyric acid type A receptors, leading to postsynaptic membrane hyperpolarization, thereby reducing neuronal activity and inducing sleep. This characteristic makes it significantly effective in treating sleep disorders such as insomnia and anxiety.
However, it should be noted that its hypnotic effect may be accompanied by some side effects, such as drowsiness, dizziness, etc. Therefore, it is necessary to closely monitor the patient's condition changes and whether there are any adverse reactions during use. At the same time, it is necessary to avoid using it in situations that require high concentration of attention, such as driving or operating machinery, in order to prevent accidents.
5. Muscle relaxation effect
It also has a certain muscle relaxation effect, which can relieve muscle tension and pain. This characteristic makes it potentially valuable in the treatment of diseases such as muscle spasms and muscle tone disorders.
When treating muscle spasms, it can relax tense muscles, relieve pain and discomfort. However, it should be noted that its muscle relaxation effect may be accompanied by some side effects, such as fatigue, dizziness, etc. Therefore, it is necessary to closely monitor the patient's condition changes and whether there are any adverse reactions during use. At the same time, it is necessary to avoid using other drugs that have muscle relaxant effects at the same time, in order to prevent the occurrence of overlapping effects and the aggravation of adverse reactions.
Interactions with other drugs
When used in combination with other drugs, there may be interactions that affect efficacy and safety. Here are some common drugs that interact with hydroxyzine hydrochloride:
Barbital: When used in combination with barbiturates, it can enhance the central inhibitory effect of barbiturates, leading to increased sedative and hypnotic effects. Therefore, it is necessary to closely monitor the patient's condition changes and whether there are adverse reactions such as excessive sedation and hypnosis during use.
Antiepileptic drugs: When used in combination with antiepileptic drugs, the efficacy of antiepileptic drugs may be reduced, leading to exacerbation of epileptic seizures. Therefore, it is necessary to closely monitor the patient's condition changes and whether there is an aggravation of epileptic seizures during use.
Anticholinergic drugs: When used in combination with anticholinergic drugs, they may enhance the anticholinergic effect, leading to worsening adverse reactions such as dry mouth and constipation. Therefore, it is necessary to closely monitor the patient's condition changes and whether adverse reactions worsen during use.
Sedative hypnotic drugs: When used in combination with sedative hypnotic drugs, it may increase sedative and hypnotic effects, leading to worsening adverse reactions such as drowsiness and dizziness. Therefore, it is necessary to avoid using other drugs with sedative and hypnotic effects at the same time during use, in order to prevent the occurrence of overlapping effects and the aggravation of adverse reactions.
Opioids: When used in combination with opioid drugs, they can enhance the analgesic effect of opioid drugs, but may also increase addiction and dependence. Therefore, it is necessary to strictly control the dosage and treatment course during use to avoid abuse and misuse.
Hydroxyzine dihydrochloride is a medication with multiple medical uses, including anti anxiety, antihistamine, sedative, hypnotic, and muscle relaxant effects. However, attention should be paid to possible side effects and drug interactions during use, as well as medication contraindications and precautions for special populations. When using hydroxyzine hydrochloride, it is necessary to strictly follow the doctor's guidance, control the dosage and treatment course reasonably, and avoid abuse and misuse that may worsen adverse reactions. At the same time, it is necessary to closely monitor the changes in the patient's condition and whether there are worsening adverse reactions, and adjust the treatment plan in a timely manner to ensure efficacy and safety.
Hydroxyzine hydrochloride, also known as Antale or Hydroxyzine, is an organic compound with various medical uses in clinical practice, such as anti anxiety, antihistamine, sedation, and muscle relaxation. The following is a detailed explanation of the pharmacological properties of hydroxyzine hydrochloride:
Hydroxyzine hydrochloride can block histamine receptors, thereby reducing symptoms caused by allergic reactions. Histone is an inflammatory mediator in the body that plays a crucial role in allergic reactions. When allergens enter the body, they stimulate mast cells to release histamine, leading to a series of allergic reactions such as skin itching, redness, sneezing, runny nose, etc. Hydroxyzine hydrochloride inhibits the biological effects of histamine by blocking its receptors, thereby alleviating allergic reaction symptoms.
Hydroxyzine hydrochloride has central sedative and anti anxiety effects, which can reduce the excitability of the cerebral cortex, decrease the firing frequency of neurons, and thus produce sedative and anti anxiety effects. This mechanism of action may be related to its impact on the balance of neurotransmitters in the brain, such as serotonin and norepinephrine. By regulating the levels of these neurotransmitters, hydroxyzine hydrochloride can alleviate negative emotions such as anxiety and tension, and help improve sleep quality.
Hydroxyzine hydrochloride also has a certain muscle relaxation effect, which can relieve muscle tension and pain. This effect may be related to its impact on the transmission process at the neuromuscular junction, by inhibiting the release of acetylcholine or blocking its receptors, thereby reducing muscle contraction and tension.
The metabolism and excretion process of hydroxyzine hydrochloride in the body is relatively complex. After oral or intramuscular administration, the drug can be quickly absorbed and enter the bloodstream. Its clearance half-life varies among individuals, but is typically 710 hours in adults and 67 hours in children, while it may be longer in the elderly and those with renal insufficiency.
Hydroxyzine hydrochloride is mainly metabolized by the liver, and some metabolites still have pharmacological activity. These metabolites may be excreted from the body through urine or feces. Therefore, when using hydroxyzine hydrochloride, attention should be paid to the patient's liver and kidney function to avoid drug accumulation and adverse reactions.
Hydroxyzine hydrochloride may interact with other drugs when used in combination, affecting efficacy and safety. Here are some common types of drugs that interact with hydroxyzine hydrochloride:
(1) Central nervous system depressants:
When used in combination with barbiturates, opioids, or other central nervous system depressants, hydroxyzine hydrochloride can enhance the central inhibitory effects of these drugs, leading to exacerbation of adverse reactions such as sedation, hypnosis, and respiratory depression. Therefore, caution should be exercised when using these medications, and patients' condition changes should be closely monitored.
(2) Anticholinergic drugs:
When used in combination with anticholinergic drugs, hydroxyzine hydrochloride may enhance the anticholinergic effect, leading to worsening adverse reactions such as dry mouth, constipation, and blurred vision. Therefore, when using these medications, it is necessary to pay attention to changes in the patient's symptoms and adjust the treatment plan in a timely manner.
(3) Sedative hypnotic drugs:
When used in combination with sedative hypnotic drugs, hydroxyzine hydrochloride may increase sedative and hypnotic effects, leading to aggravated adverse reactions such as drowsiness and dizziness. Therefore, when using these drugs, it is necessary to avoid using other drugs with sedative and hypnotic effects at the same time, in order to prevent the occurrence of overlapping effects and the aggravation of adverse reactions.
(4) Antiepileptic drugs:
When used in combination with antiepileptic drugs, hydroxyzine hydrochloride may reduce the efficacy of antiepileptic drugs, leading to exacerbation of epileptic seizures. Therefore, it is necessary to closely monitor the patient's condition changes and adjust the treatment plan as needed when using these drugs.
Hydroxyzine dihydrochloride may cause some adverse reactions during use, such as drowsiness, weakness, headache, dizziness, etc. In addition, long-term use may also lead to dependency. Therefore, when using hydroxyzine hydrochloride, it is necessary to strictly control the dosage and duration of treatment to avoid abuse and misuse that may worsen adverse reactions.
Here are some contraindications for the use of hydroxyzine hydrochloride:
It is contraindicated for patients allergic to hydroxyzine hydrochloride or other piperazine derivatives.
It is contraindicated for those with leukopenia, as hydroxyzine hydrochloride may cause bone marrow suppression.
Epilepsy patients should avoid using hydroxyzine hydrochloride as it may reduce the efficacy of antiepileptic drugs and worsen epileptic seizures.
Pregnant and lactating women should avoid using hydroxyzine hydrochloride as it may have adverse effects on the fetus or infant.
People with liver and kidney dysfunction should use caution because their metabolism and excretion abilities are weak, which can lead to drug accumulation and worsening of adverse reactions.
faq
What is hydroxyzine dihydrochloride used for?
Hydroxyzine is used to relieve itching caused by allergic skin reactions. It is also used to relieve anxiety and tension. Hydroxyzine is also used as a sedative before and after general anesthesia for surgery. Hydroxyzine is in a class of medications called antihistamines.
Is hydroxyzine a sleeping pill?
Because of its sedating effects, hydroxyzine is also used for anxiety, tension and as a mild sleeping aid.
Does hydroxyzine make you sleepy?
Hydroxyzine (Vistaril) is an antihistamine that's used to treat anxiety and itchiness. Adults and kids can both take it. As with other antihistamines, hydroxyzine can cause drowsiness. This may be helpful for people struggling with insomnia, but it may interfere with various activities, such as driving.
Is hydroxyzine a strong anxiety medicine?
A review of five studies about hydroxyzine pamoate's effect on generalized anxiety disorder demonstrated that it is more effective at treating anxiety symptoms than a placebo was. However Vistaril's effectiveness has been shown to decrease over time, as patients build up a tolerance to it.
What is hydroxyzine medication good for?
Medicines are chemicals or compounds used to cure, halt, or prevent disease; ease symptoms; or help in the diagnosis of illnesses. Advances in medicines have enabled doctors to cure many diseases and save lives.
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