anti histamines 1st gen

Question 1

What are the common indications for first-generation antihistamines?
A:
First-generation antihistamines are used to treat allergic conditions, such as hay fever, urticaria (hives), and allergic rhinitis. They can also be used to treat symptoms of the common cold, including sneezing, runny nose, and itching.

Question 2

What is the recommended dose of chlorphenamine for adults?
A:
The recommended dose of chlorphenamine (Piriton) for adults is 4 mg every 4-6 hours, up to a maximum of 24 mg in 24 hours.

Question 3

What is the recommended dose of promethazine for adults?
A:
The recommended dose of promethazine (phenergan) for adults is 25 mg taken orally or rectally every 4-6 hours, up to a maximum of 100 mg in 24 hours.

Question 4

What is the recommended dose of diphenhydramine for adults?
A:
The recommended dose of diphenhydramine (NYTOL) for adults is 25-50 mg every 4-6 hours, up to a maximum of 300 mg in 24 hours.

Question 5

Which first-generation antihistamine is preferred for use in pregnancy?
A:
Chlorphenamine is the first-generation antihistamine of choice for use in pregnancy, as it has been studied more extensively than other antihistamines and has a long safety record.

Question 6

Which first-generation antihistamine is preferred for use in breastfeeding?
A:
Chlorphenamine is also preferred for use in breastfeeding, as it has a low risk of side effects in breastfed infants.

Question 7

Which first-generation antihistamine is preferred for use in children?
A:
Chlorphenamine is generally considered safe for use in children over 1 year of age, but doses should be adjusted based on age and weight. Diphenhydramine can also be used in children, but it may cause more side effects compared to chlorphenamine.

Question 8

Which first-generation antihistamine can cause drowsiness and should be avoided in certain situations?
A:
All first-generation antihistamines can cause drowsiness, but diphenhydramine is particularly known for its sedative effects and should be avoided in situations where alertness is important, such as driving or operating machinery.

Question 9

Can first-generation antihistamines be used to treat insomnia?
A:
Yes, first-generation antihistamines can be used to treat insomnia, but they should be used only under the guidance of a healthcare provider, as they can cause drowsiness and other side effects.

Question 10

Can first-generation antihistamines be used to treat anxiety?
A:
First-generation antihistamines have some anxiolytic (anti-anxiety) effects, but they are not typically used as first-line treatments for anxiety. Other medications, such as benzodiazepines and selective serotonin reuptake inhibitors (SSRIs), are more commonly used to treat anxiety disorders.