Hydroxyzine is an antihistamine medication used to manage conditions such as anxiety, itching from allergic skin reactions, and nausea. It also induces relaxation before surgery. It is available only by prescription, emphasizing the need for professional medical guidance.
Understanding Prescribed Dosage
A healthcare provider carefully determines hydroxyzine dosage for each individual. This personalized approach considers the condition treated, patient’s age, body weight, and response to medication. A prescribed dose is calculated to maximize therapeutic benefits while minimizing potential risks. For anxiety, adults might be prescribed 50 to 100 milligrams (mg) four times daily, with a maximum daily dose typically not exceeding 400 mg. For itching, a common adult dosage is 25 mg three or four times per day.
Adhering to prescribed instructions is important for safety and effectiveness. Taking more than prescribed, even a small increase, can lead to unintended effects due to the drug’s dose-dependent response. For instance, taking two 25 mg tablets when only a single 25 mg dose is prescribed would exceed the calculated amount. However, two 25 mg tablets might be appropriate if a 50 mg dose is prescribed. Any dosage adjustment, including taking more tablets than instructed, should only occur under a healthcare professional’s supervision.
Consequences of Exceeding Dosage
Exceeding the prescribed hydroxyzine dosage can intensify its effects and lead to adverse reactions. Common side effects like drowsiness, dizziness, dry mouth, and headache can become more pronounced. Higher doses may also result in increased confusion, particularly in older adults, and can cause constipation.
More serious consequences can arise. These include severe sedation, such as profound sleepiness, decreased awareness, or stupor. Neurological effects like tremors, involuntary muscle movements, or seizures are also possible. Cardiac issues like a prolonged QT interval, leading to irregular heartbeat, palpitations, or low blood pressure, have also been reported.
When combined with other central nervous system depressants like alcohol, exceeding the dose can lead to respiratory depression, characterized by slowed or shallow breathing. Other severe effects may include agitation, disorientation, delirium, or hallucinations. The specific effects can vary widely among individuals based on their unique physiology and the amount of medication taken.
Guidance for Concerns
If you have questions about your hydroxyzine dosage or feel your prescription isn’t managing symptoms, communicate with your healthcare provider or pharmacist. They can assess your condition and determine if a dosage adjustment or an alternative treatment is appropriate. Self-adjusting your dosage is not advised, as it can lead to adverse effects.
If you mistakenly take too much hydroxyzine or experience concerning side effects, seek immediate medical attention. Contact a poison control center (1-800-222-1222) or emergency services (911) right away. Be prepared to provide information about the amount taken and symptoms. While there is no specific antidote for hydroxyzine overdose, medical professionals can provide supportive care to manage symptoms and ensure your safety.