Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Tonic
Introduction
Tonic may refer to:
- Tonic (physiology), a muscle which is predominantly toned
- Tonic water, a carbonated beverage flavored with quinine
- Tonic, regional name for a soft drink, common in New England
Tonic may also be:
- A usually liquid drug given to improve health
- A patent medicine that claims to have tonic properties