antihistamine
Hay fever relief
An antihistamine is a drug that counteracts histamine, a compound the body releases during allergic reactions.
Antihistamines relieve symptoms like sneezing, itching, and hives: I took an antihistamine for my hay fever.
Common over-the-counter brands include Benadryl and Claritin.
Some cause drowsiness; others are marketed as non-drowsy.
Sedating antihistamine compound
- loratadineAntihistamine compound for allergies
- cetirizineSecond-generation antihistamine drug
- chlorpheniramineAntihistamine for allergy symptoms
- hydroxyzineSedating antihistamine for allergies
promethazine · Benadryl · Claritin · Zyrtec · Allegra · prescription · over-the-counter · tablet
Immune reaction triggers
- pollenFloral reproductive grains
- danderMicroscopic shed skin
- moldForm-giving container
- hay feverAllergic rhinitis from pollen
allergic rhinitis · hives · sneezing · itchiness · watery eyes · runny nose · swelling · inflammation
State of near-sleep
- sedationDrug-induced calm state
- non-drowsyNot sedating
- dry mouthInsufficient saliva production
- side effectsUnintended treatment consequences
relief · fast-acting · 24-hour · second-generation · first-generation · sedative · alertness · impairment
How illness manifests
- sinus congestionBlocked nasal airways
- runny noseNasal discharge symptom
- itchy eyesIrritated, scratchy vision organs
- skin rashIrritated skin condition
hives · insect bites · bee stings · food allergies · motion sickness · nausea · insomnia · anxiety
Signal-receiving molecule
- H2Water molecule symbol
- antagonistOne who opposes another
- blockerSomething that obstructs
- bindingLegally or morally required
competitive · selective · inhibition · affinity · immune response
diphenhydramine
Sedating antihistamine compound
- loratadineAntihistamine compound for allergies
- cetirizineSecond-generation antihistamine drug
- chlorpheniramineAntihistamine for allergy symptoms
hydroxyzine · promethazine · Benadryl · Claritin · Zyrtec · Allegra · prescription · over-the-counter · tablet · capsule
allergens
Immune reaction triggers
hay fever · allergic rhinitis · hives · sneezing · itchiness · watery eyes · runny nose · swelling · inflammation · immune response
drowsiness
State of near-sleep
- sedationDrug-induced calm state
- non-drowsyNot sedating
- dry mouthInsufficient saliva production
side effects · relief · fast-acting · 24-hour · second-generation · first-generation · sedative · alertness · impairment · drug interactions
flu symptoms
How illness manifests
- sinus congestionBlocked nasal airways
- runny noseNasal discharge symptom
- itchy eyesIrritated, scratchy vision organs
skin rash · hives · insect bites · bee stings · food allergies · motion sickness · nausea · insomnia · anxiety · itching
receptor
Signal-receiving molecule
- H2Water molecule symbol
- antagonistOne who opposes another
- blockerSomething that obstructs
binding · competitive · selective · inhibition · affinity · immune response
- antihistaminesdiphenhydramine, cetirizine, loratadine, chlorpheniramine, hydroxyzine
- receptor drugsantagonists, agonists, beta blockers, naloxone, naltrexone
- allergiesallergy, allergies, allergen, allergens, allergist
- Cold Remediescold medicine, cough syrup, cough drops, throat lozenges, lozenges
- health suppliesbandage, pharmacy, bandages, drugstore, gauze
- itchinessscratch, scratching, pruritus, itchy skin, scalp itch
antihistaminehistamine
Allergy-response compound
allergen · irritant · pollen · dust mites · pet dander
- antihistamine creamMedication blocking allergic skin reactions
- antihistamine sprayMedication mist blocking allergic reactions