Routes of Administration Flashcards
Advantages of Oral Administration
- Convenient for patient
2. Large surface area for absorption
Advantages of Topical Administration
- Convenient for patient
2. Low risk of overdosing
Advantages of Transdermal Administration
Long Acting
Advantages of Rectal Administration
- Local effect
2. Beneficial for patients who are vomiting or cannot swallow
Advantages of Inhalation Administration
- Rapid Response due to large absorption surface area
2. Local/ Systemic effect
Advantages of Parenteral Routes
- Rapid Action
- Bypass Stomach and Liver
- Lower Dose Required
- Can be controlled by patients
Disadvantages of Oral Administration
- Not suitable for all patients
- Absorption of drug can vary
- Absorption of drug can be interrupted by stomach contents
- Degrades in stomach
Disadvantages of Topical Administration
- Adverse skin effects
e. g skin thinning by hydrocortisone
Disadvantages of Transdermal Administration
- Adverse skin effects
2. Drug needs to be really potent an lipid soluble
Disadvantages of Rectal Administration
- Need to be trained to administer
Disadvantages of Inhalation Administration
- Difficult to ensure drugs reaches target cells
2. Patient need to be trained to use it
Disadvantages of Parenteral Routes
- High risk of overdosing
- Requires training for administration
- Painful
What is intravenous injection?
Injection to veins
e.g heparin, thiopental
What is intramuscular injection?
Injection to muscle
e.g pre-meds
What is intradermal administration?
Injection to skin
e.g Local Aesthetic
