Components:
Medically reviewed by Militian Inessa Mesropovna, PharmD. Last updated on 26.06.2023

Attention! Information on this page is intended only for medical professionals! Information is collected in open sources and may contain significant errors! Be careful and double-check all the information on this page!
Top 20 medicines with the same components:
this medicine is indicated for symptomatic control of all allergic conditions responsive to antihistamines, including hay fever, vasomotor rhinitis, urticaria, angioneurotic oedema, food Allergex 2, drug and serum reactions, insect bites.
Also indicated for the symptomatic relief of itch associated with chickenpox
Allergex 2 is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.
Allergex 2 is used to treat runny nose, sneezing, itching, and watery eyes caused by allergies, the common cold, or the flu.
Allergex 2 may also be used for purposes not listed in this medication guide.
Dosage Forms
Excipient information presented when available (limited, particularly for generics); consult specific product labeling. [DSC] = Discontinued product
Liquid,
Oral, as maleate:
Ed ChlorPed: 2 mg/mL (60 mL [DSC]) [contains fd&c red #40, propylene glycol, saccharin sodium, sodium benzoate; cotton candy flavor]
Syrup,
Oral, as maleate:
Allergex 2: 2 mg/5 mL (120 mL [DSC]) [contains alcohol, usp, fd&c yellow #6 (sunset yellow), menthol, methylparaben, propylene glycol, propylparaben]
Allergex 2: 2 mg/5 mL (120 mL) [contains alcohol, usp]
Ed Chlorped Jr: 2 mg/5 mL (118 mL [DSC], 473 mL) [alcohol free, sugar free; contains fd&c red #40, methylparaben, propylene glycol, propylparaben; cherry flavor]
Tablet,
Oral, as maleate:
Allergex 2: 4 mg [scored; contains fd&c yellow #10 aluminum lake]
Allergex 2: 4 mg [scored; contains corn starch, fd&c yellow #10 aluminum lake]
Allergex 2 Relief: 4 mg [contains fd&c yellow #10 aluminum lake]
Allergex 2-Time: 4 mg [contains fd&c yellow #10 aluminum lake]
Allergex 2: 4 mg [scored]
Ed-Chlortan: 4 mg [DSC] [scored; contains fd&c yellow #10 aluminum lake]
Pharbechlor: 4 mg
Generic: 4 mg
Tablet Extended Release,
Oral, as maleate:
Allergex 2 Allergex 2: 12 mg [contains fd&c blue #2 aluminum lake, fd&c yellow #10 aluminum lake, fd&c yellow #6 aluminum lake]
Allergex 2 Allergex 2: 12 mg [contains fd&c yellow #6 (sunset yellow), fd&c yellow #6 aluminum lake]
Generic: 12 mg
Dosing: Adult
Allergic symptoms, allergic rhinitis, urticaria, pruritus:
Oral:
Allergex 2:Immediate release: 4 mg every 4 to 6 hours; do not exceed 24 mg/24 hours
Extended release: 12 mg every 12 hours; do not exceed 24 mg/24 hours
Motion sickness (off-label use): Immediate release: 4 to 12 mg administered 3 hours prior to initiating stimulus for motion sickness (Buckey 2004). Note: Avoid use if it is unsafe for patient to be sedated.
Dosing: Geriatric
Avoid use (Beers Criteria [AGS 2019]).
Dosing: Pediatric
Note: Safety and efficacy for the use of cough and cold products in infants and young children is limited; the AAP warns against the use of these products for respiratory illnesses in infants and young children; the FDA does not recommend OTC use in infants and children <2 years of age due to the risk of serious and life-threatening adverse effects (including death) and recommends to use with caution in pediatric patients ≥2 years of age (AAP 2018; FDA 2017).
Allergic symptoms:
Oral:
Immediate release:
Oral liquid (2 mg/5 mL):
Children 2 to <6 years: 1 mg every 4 to 6 hours; maximum daily dose: 6 mg/day.
Children 6 to <12 years: 2 mg every 4 to 6 hours; maximum daily dose: 12 mg/day.
Children ≥12 years and Adolescents: 4 mg every 4 to 6 hours; maximum daily dose: 24 mg/day.
Tablets:
Children 6 to <12 years: 2 mg every 4 to 6 hours; maximum daily dose: 12 mg/day.
Children ≥12 years and Adolescents: 4 mg every 4 to 6 hours; maximum daily dose: 24 mg/day.
Extended-release tablet: Children ≥12 years and Adolescents: 12 mg every 12 hours; maximum dose: 24 mg in 24 hours.
See also:
What is the most important information I should know about Allergex 2?
Hypersensitivity to Allergex 2 or any component of the formulation; narrow-angle glaucoma; bladder neck obstruction; symptomatic prostate hypertrophy; during acute asthmatic attacks; stenosing peptic ulcer; pyloroduodenal obstruction. Avoid use in premature and term newborns due to possible association with SIDS.
OTC labeling: When used for self-medication, do not use to make a child sleep
Use Allergex 2 suspension drops as directed by your doctor. Check the label on the medicine for exact dosing instructions.
- Allergex 2 suspension drops may be taken with or without food.
- Shake well before using.
- Use the dropper that comes with Allergex 2 suspension drops to measure your dose. Ask your pharmacist for help if you are unsure of how to measure your dose.
- If you miss a dose of Allergex 2 suspension drops, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
Ask your health care provider any questions you may have about how to use Allergex 2 suspension drops.
There are specific as well as general uses of a drug or medicine. A medicine can be used to prevent a disease, treat a disease over a period or cure a disease. It can also be used to treat the particular symptom of the disease. The drug use depends on the form the patient takes it. It may be more useful in injection form or sometimes in tablet form. The drug can be used for a single troubling symptom or a life-threatening condition. While some medications can be stopped after few days, some drugs need to be continued for prolonged period to get the benefit from it.Use: Labeled Indications
Allergic symptoms, allergic rhinitis, urticaria, pruritus: Perennial and seasonal allergic rhinitis and other allergic symptoms including urticaria, pruritus
Off Label Uses
Motion sickness
Data from a limited number of patients studied suggests that Allergex 2 may be beneficial in the treatment of motion sickness. Additional data may be necessary to further define its role in this condition.
See also:
What other drugs will affect Allergex 2?
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Some products that may interact with this drug include: antihistamines applied to the skin (such as diphenhydramine cream, ointment, spray), antispasmodics (e.g., atropine, belladonna alkaloids), drugs for Parkinson's disease (e.g., anticholinergics such as benztropine, trihexyphenidyl), scopolamine, tricyclic antidepressants (e.g., amitriptyline).
Tell your doctor or pharmacist if you also take drugs that cause drowsiness such as: certain antihistamines (e.g., diphenhydramine), anti-seizure drugs (e.g., carbamazepine), medicine for sleep or anxiety (e.g., alprazolam, diazepam, zolpidem), muscle relaxants, narcotic pain relievers (e.g., codeine), psychiatric medicines (e.g., chlorpromazine, risperidone, amitriptyline, trazodone). Check the labels on all your medicines (e.g., cough-and-cold products) because they may contain drowsiness-causing ingredients. Ask your pharmacist about the safe use of those products.
Allergex 2 is very similar to dexchlorpheniramine. Do not use medications containing dexchlorpheniramine while using Allergex 2.
This medication may interfere with certain laboratory tests (including Allergex 2 skin testing), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.
See also:
What are the possible side effects of Allergex 2?
Applies to Allergex 2: capsules, controlled-release capsules, suspension drops, sustained-release capsules, syrup, tablets
Other dosage forms:
- suspension
Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Constipation; diarrhea; dizziness; drowsiness; dry mouth, nose, or throat; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.
Seek medical attention right away if any of these SEVERE side effects occur while taking Allergex 2 (the active ingredient contained in Allergex 2)
Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; tremor; trouble sleeping; vision changes.
An alpha- and beta-adrenergic agonist that may also enhance release of norepinephrine. It has been used in the treatment of several disorders including asthma, heart failure, rhinitis, and urinary incontinence, and for its central nervous system stimulatory effects in the treatment of narcolepsy and depression. It has become less extensively used with the advent of more selective agonists.