diphenhydramine

/ˌdaɪfənˈhaɪdrəmiːn/ /ˌdɪfənˈhaɪdrəmiːn/

Meanings

noun

An antihistamine and anticholinergic drug that blocks the effect of histamine at H1 receptor sites, relieving allergy symptoms. Diphenhydramine also reduces smooth muscle contraction, increases heart rate, and sedates the user by blocking muscarinic acetylcholine receptors (mAChRs).

Examples :

"Example Sentence: "I took diphenhydramine last night to help with my allergies, but I felt very drowsy this morning." "

Related Words

acetylcholine noun

/ˌæsəˈtiːlˈkoʊliːn/ /ˌæsɪˈtiːlˈkoʊliːn/

A neurotransmitter in humans and other animals. It is an ester of acetic acid and choline with chemical formula CH3COOCH2CH2N+(CH3)3.

"Example Sentence: "Acetylcholine is released by nerve cells to help muscles contract, allowing you to lift a book." "

symptoms noun

/ˈsɪmptəmz/

A perceived change in some function, sensation or appearance of a person that indicates a disease or disorder, such as fever, headache or rash.

""Her symptoms, including a sore throat and runny nose, suggested she might have a cold." "

relieving verb

/ɹɪˈliːvɪŋ/

To ease (a person, person's thoughts etc.) from mental distress; to stop (someone) feeling anxious or worried, to alleviate the distress of.

"Hearing that the surgery was successful was relieving to the whole family. "

anticholinergic noun

/ˌæntiˌkoʊlɪnˈɜːrdʒɪk/ /ˌæntaɪˌkoʊlɪnˈɜːrdʒɪk/

Any of a class of drugs, typically used to treat various disorders and some forms of poisoning, which inhibit the physiological action of acetylcholine at a receptor site

"The doctor prescribed an anticholinergic to help calm his son's overactive bladder. "

receptor noun

/ɹɪˈsɛp.tə/ /ɹʷɪˈsɛp.tɚ/

A protein on a cell wall that binds with specific molecules so that they can be absorbed into the cell in order to control certain functions.

"The hormone insulin binds to a receptor on the cell's surface, signaling the cell to absorb sugar from the blood. "

allergies noun

[ˈæl.ə.dʒiz] [ˈæl.ɚ.dʒiz]

A disorder of the immune system causing adverse reactions to substances (allergens) not harmful to most and marked by the body's production of histamines and associated with atopy, anaphylaxis, and asthma.

"My son has severe allergies to peanuts, so we always check the ingredients in his school lunch. "

receptors noun

/rɪˈsɛptərz/

A protein on a cell wall that binds with specific molecules so that they can be absorbed into the cell in order to control certain functions.

"Example Sentence: "Insulin in the blood attaches to receptors on cells, allowing sugar to enter and provide energy for our bodies." "

increases noun

/ɪnˈkriːsɪz/ /ˈɪŋkriːsɪz/

An amount by which a quantity is increased.

"The increases in the price of milk were a surprise to the grocery shoppers. "

contraction noun

/kɒnˈtɹæk.ʃən/ /kənˈtɹæk.ʃən/

A reversible reduction in size.

"The muscle contraction during exercise resulted in a temporary reduction in the size of the arm. "

antihistamine noun

/ˌæn.taɪˈhɪs.tə.miːn/

A drug or substance that counteracts the effects of a histamine. Commonly used to alleviate the symptoms of hay fever and other allergies.

"My sister took an antihistamine to relieve her itchy eyes and runny nose from the pollen in the air. "

histamine noun

/ˈhɪstəmiːn/

An amine, C5H9N3, formed by decarboxylation of histidine, that causes dilatation of capillaries, contraction of smooth muscle, and stimulation of gastric acid secretion; it is released during allergic reactions.

"The itchy rash was caused by the release of histamine in response to the bug bite. "

muscarinic adjective

/ˌmʌskəˈrɪnɪk/ /ˌmʌskəˈrɛnɪk/

Of or pertaining to muscarine

"Certain nerve gases exert their effects by disrupting muscarinic receptors in the body, leading to muscle spasms. "