Antihistamines are a group of compounds that have been used for centuries in the treatment of allergic conditions. Various substances and products have made their appearance on the global market and promise to help people fight off the irritating symptoms associated with allergies.
4H2 pill is a well-known and widely used white pill used to treat various allergic reactions. It is supplied by Perrigo Company and it contains a compound, named cetirizine.
So, what exactly is the 4H2 pill, and what are its main uses? Let us have a closer look at its specific properties, as well as possible side effects that may appear during its consumption.
What Is 4H2 Pill
4H2 pill is a white and oval-shaped medication that belongs to a particular group of drugs, named antihistamines.
The main ingredient of this tablet is cetirizine hydrochloride and the company behind the product’s release is well-known in the United States with the name of Perrigo Pharmaceutical Company. 4H2 white pill is mainly used in allergic conditions, including rhinitis and urticaria.
Although 4H2 is considered a second-generation drug, and therefore it is more tolerant and safe for human use, there are still some mild side effects patients may experience after they start to receive this drug.
Active Ingredient of the 4H2 Pill
As mentioned above, the main active ingredient 4H2 contains is called cetirizine hydrochloride. 10 mg of this substance is contained in each tablet.
Cetirizine is a well-known antihistamine compound that can effectively block a specific natural substance, called histamine that’s produced in large quantities by our body during an allergic reaction. Blocking of this substance can help our body fight off the existing allergy and relieve common symptoms, including itching eyes and sneezing.
Since cetirizine works by reducing the natural compound named histamine in the human body, it does not affect other body functions and for this reason, it is considered a safe enough medication.
What is the 4H2 White Pill Used For
Apart from allergic reactions, 4H2 can also, help users deal with some other unfortunate health conditions. It can effectively treat the symptoms of Urticaria, including itchy and reddish rashes, as well as raised pumps on the skin. Seasonal rhinorrhea, postnasal discharge, and nasal pruritus can also, be dealt with effectively with cetirizine.
4H2 Pill Effects
4H2 can effectively help users deal with allergic symptoms that appear during an allergic reaction. When our immune system overreacts to specific substances, like dust, animal dander, certain types of food or insect bites, our immune cells start to produce and secrete large quantities of a substance, named histamine. That specific compound causes our blood vessels to expand. This is when the first symptoms of the allergic reaction make their appearance.
The most common symptoms an allergic person will most probably develop are the following: runny nose, watery eyes, itching, sneezing, and hives. Most of those symptoms are developed due to the secretion of histamine and therefore, cetirizine can effectively help us deal with them. However, this compound cannot prevent hives or treat a serious allergic reaction, named anaphylaxis. Another drug, known as epinephrine is the usual treating option for this type of serious reaction.
4H2 Pill Side Effects
Apart from the good 4H2 pill effects in case of allergic reactions, there are some common side effects that accompany this drug. To start with, we should be aware of the fact that some patients may be allergic to cetirizine and if that’s the case it is vital that you stop receiving the drug immediately.
Other common side effects are the following: sleepiness, diarrhea, nausea, vomiting, blurred mouth and headaches. Difficulty in urinating and feeling the mouth dry are two other quite common side effects of this drug.
Although cetirizine is not typically responsible for drowsiness, some people may respond differently when they take it on a daily basis for a period of time and therefore, driving or using heavy machinery should better be avoided.
Cetirizine hydrochloride is a second-generation antihistamine drug. That practically means that it is much safer than older drugs and it cannot easily be the cause of serious side effects, including dangerous drowsiness or overheating. However, if you find yourself suffering from sudden hyperactivity, confusion, or you experience some fast or uneven heartbeat, it is vital that you stop taking the drug immediately.
Another important thing we should make clear is the fact that cetirizine is known to be safe in terms of drug abuse. Therefore, you should not worry that you may suffer from 4H2 pill abuse in case you need to receive the drug regularly. Generally speaking, cetirizine is considered a well-tolerated drug for short-term use.
Proposed Dosage of the 4H2 White Pill
The proposed dosage of 4H2 is not something fixed for every patient. In fact, although for common allergic symptoms it is best to keep the dosage between 5-10 mg with a maximum dosage of 10 mg per day.
The dosage will be determined by your doctor based on a series of factors. Apart from your health status at the moment of the administration, other medical issues or medicines you are receiving at that time will be considered. Personal characteristics, including your weight, gender, and age are also, really important factors.
Consuming a dose of cetirizine exceeding 10 mg per day may cause some serious liver damage. Alcohol may also, interact with the drug and for this reason, you should better stay away from it as long as you take 4H2. Excess uptake of this drug can cause various mild side effects, including diarrhea, dizziness, restlessness and even tremor.
Cetirizine can be taken at any time during the day. After all, most people find it non-sedating and they prefer to take it in the morning. However, if you find yourself feeling a bit drowsy after you receive 4H2, you should prefer to take it in the evening.
You can take the drug with or without food. If you miss a dosage, take it as soon as you remember it. However, if the time for the next dose is too close, prefer to miss it. Taking two pills close together may increase the danger of experiencing one or more side effects.
Does 4H2 Pill Interact With Other Drugs?
Drug interactions should always be taken into serious account when we start to receive a new drug.
Interactions can not only change the way the drug works and how effective it is but increase the risk of side effects, as well. Drugs that cause drowsiness, including pain relievers like codeine, sleep medication, like lorazepam and muscle relaxants such as cyclobenzaprine should be avoided, as well. Other antihistamines applied to the skin should also, be avoided because you run the danger of developing some serious side effects.
Compounds similar to cetirizine, like levocetirizine or hydroxyzine have a similar way of action and therefore, they cannot further improve your health status. On the contrary, you run the risk of suffering from more severe side effects if you take two similar products together.
4H2 Pill For Dogs
It is true that cetirizine is a compound that has been used in humans and there is actually no veterinarian-approved equivalent. For this reason, using a 4H2 pill or any other equivalent that contains cetirizine on our dog or cat is considered an extra-label drug. However, since it is commonly prescribed by vets, and no serious side effects have been observed, we can assume that 4H2 can be used on dogs in case of need.
In most cases, 4H2 is used when a dog suffers from itching or similar symptoms of an allergic reaction. However, studies have revealed that only 30% of dogs that are given some type of antihistamine will experience an improvement to their overall health issue.
Unlike humans, in dogs, those reactions are usually related to atopic dermatitis. The symptoms of such a reaction in dogs may vary a lot, but in most cases, the following are observed: skin irritations, frequent biting, shaking of their head, scratching and swelling.
However, some precautions should be taken into account to avoid harming your dog. If your dog suffers from renal or liver problems or if it has hypersensitivity to antihistamines, then the dosage should be regulated accordingly or the drug should be overall avoided. Generally, the dosage for using a 4H2 pill for dogs is based on their overall weight. Normally, the ratio is 1 mg of 4H2 per kilogram.
It is true that 4H2 has been used widely nowadays, thanks to its efficacy and minority of side effects, compared to similar drugs. In case of an allergic reaction that’s not too serious, receiving cetirizine hydrochloride daily for as long as you need it may be the key to soothing your body and fighting off the irritating symptoms that accompany the disease.
However, sticking to the proposed dosage and following the advice of your personal doctor is vital in order to avoid experiencing some side effects that accompany this drug. After all, every newly acquired drug you need to take should be considered with caution.
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