Drugs administration varies in different ways, including:

Oral Route (PO) – Taken by mouth (e.g., tablets, capsules)

Nasal Route – Taken through the nose (e.g., Nasal Drop)

Intravenous Route (IV) – Directly into the bloodstream for fast action

Intramuscular Route (IM) – Injected into a muscle (e.g., vaccines)

Subcutaneous Route (SC) – Injected under the skin (e.g., insulin)

Topical Route– Applied to the skin (e.g., creams, patches)

Inhalation Route or Pulmonary Route 

– Through the lungs (e.g., asthma inhalers)

Rectal Route – Through the rectum (e.g., Suppository)

Sublingual– Placed and retained beneath the tongue (e.g., tablets)

Buccal Route – Placed and retained the buccal region that is, between the oral mucosa and the mandibular arch (e.g., tablets)