Common side effects include headache, dizziness, hallucinations, difficulty sleeping, fatigue, drowsiness, rapid heartbeat, dry mouth, nausea, loss of appetite, nervousness, restlessness, excitability, fear of anxiety and tremor.
Antihistamines
Antihistamines are known to cause extreme drowsiness; however, in certain people, they can cause insomnia, excitability, anxiety, restlessness, and a rapid heart rate.
Many of the adverse events occurring in the fexofenadine hydrochloride/pseudoephedrine hydrochloride combination group were adverse events also reported predominately in the pseudoephedrine hydrochloride group, such as insomnia, headache, nausea, dry mouth, dizziness, agitation, nervousness, anxiety, and palpitation.
On the other hand, allergy medications can also affect mood in some people. Medications like Sudafed (pseudoephedrine) cause some people to feel anxious and jittery, and others to feel lethargic. Many antihistamines cause drowsiness.
As an antihistamine, hydroxyzine blocks the effects of histamine in your body, which makes you sleepy. (Think about how you feel after taking Benadryl or Nyquil.) Serotonin is a chemical that affects your mood. Hydroxyzine's unique effect on serotonin is likely why it's the only antihistamine used for anxiety.
Fexofenadine is classed as a non-drowsy antihistamine, but some people still find it makes them feel quite sleepy. Common side effects include headaches, feeling sleepy, dry mouth, feeling sick and dizziness.
Atarax (hydroxyzine hydrochloride) and Allegra (fexofenadine hydrochloride) are types of antihistamines used to treat itching caused by allergies. Atarax is also used for symptomatic relief of anxiety and tension associated with psychoneurosis and as an adjunct in organic disease states in which anxiety is manifested.
One study also suggests cetirizine and hydroxyzine have a greater chance of causing anxiety and mood changes than other antihistamines. Hydroxyzine can also be used to treat anxiety conditions.
One study of 92 people with chronic itchiness saw that patients who took the antihistamines cetirizine and hydroxyzine reported an increase in depression and anxiety.
They're usually divided into 2 main groups: antihistamines that make you feel sleepy – such as chlorphenamine (Piriton), cinnarizine, diphenhydramine, hydroxyzine and promethazine. non-drowsy antihistamines that are less likely to make you feel sleepy – such as acrivastine, cetirizine, fexofenadine and loratadine.
Many people using this medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: difficulty urinating, fast/irregular/pounding heartbeat, shaking (tremor), mental/mood changes (such as anxiety, confusion, nervousness, restlessness), weakness.
Antihistamines are usually prescribed to treat allergic reactions. However, some are also used to treat anxiety on a short-term basis. Antihistamines work by having a calming effect on the brain, helping you to feel less anxious.
Like Benadryl, hydroxyzine is an antihistamine. It has sedative properties and is frequently used off-label for many conditions. These include insomnia, nausea, vomiting, itching, and skin rashes. Unlike Benadryl, hydroxyzine has been approved by the FDA for the treatment of anxiety.
Benzodiazepines most commonly used to treat anxiety disorders are clonazepam (Rivotril)*, alprazolam (Xanax) and lorazepam (Ativan). Also used are bromazepam (Lectopam), oxazepam (Serax), chlordiazepoxide (once marketed as Librium), clorazepate (Tranxene) and diazepam (Valium).
While Fexofenadine can be taken daily when your allergies are most prevalent (like during spring), you should not overuse this medication. Overuse may lead to common side effects, like sedation, nausea, headache, and dry mouth. Use this drug per your physician's recommendation to avoid its unwanted side effects.
Telfast 180 mg is used in adults and adolescents of 12 years and older to relieve the symptoms that occur with long term allergic skin reactions (chronic idiopathic urticaria) such as itching, swelling and rashes. Talk to your doctor or pharmacist before taking Telfast if: you have problems with your liver or kidneys.
Nervousness, excitability, restlessness, dizziness, weakness, or insomnia may occur. Headache, drowsiness, tachycardia, palpitation, pressor activity, cardiac arrhythmias and ischemic colitis have been reported.
The adverse effects of fexofenadine include headache, nausea, drowsiness and fatigue.
What Is Pharmacophobia? In short, pharmacophobia is the fear of medication and any sort of pharmacological treatment. People with pharmacophobia may feel nervous or upset seeing or hearing about medication in a variety of settings, from a television show to seeing a pill container in someone's bathroom.
Various factors can cause anxiety to worsen. The triggers vary between individuals but include ongoing stress, a bereavement, financial problems, and key events, such as a job interview. Anxiety can lead to feelings of nervousness, apprehension, and worry.