Sublingual refers to a method of taking medication or substances by placing them under the tongue. This area has a rich supply of blood vessels, allowing the medicine to be absorbed quickly into the bloodstream.

Key points about sublingual administration:

• It allows for faster absorption compared to swallowing pills.
• It bypasses the digestive system and liver metabolism, which can sometimes reduce the effectiveness of a drug.
• Commonly used for medications like nitroglycerin (for chest pain) and certain vitamins or supplements.

If you have any specific medication or context in mind, I can provide more detailed information about sublingual use for that case. For personalized advice, please consult a doctor or pharmacist.