Not really. Quinine (the substance responsible for the bitter flavor of tonic water) doesn't help Diabetes, so there's no significant difference between tonic water and regular soda water or seltzer. Also, some tonic water is sweetened, making it just like any other carbonated sweetened beverage.
To give it the distinctive bitter taste.
Opal, (Lady Nr the Hotel) Likes Tea No 11. (Gives puzzle 11). 11 Cinder Flower Contains: Dream Fluff Mild -- Tonic Flower Bitter -- Cinder Horse Smoky Dream Fluff Mild = Relaxing -- Tonic Flower Bitter = Boosts Immunity -- Cinder Horse Smoky = Energising.
Chill tonic was a tonic containing quinine and other ingredients to battle the symptoms (often chills) of malaria. The most famous (and perhaps the first?) chill tonic was "Grove's Tasteless Chill Tonic," in which the flavor of quinine supposedly could not be tasted.
Tea 6 Bitter Fruit Contains: 6. Bitter Fruit: Contains: Brisk Berry, Citronia Seed and Tonic Flower Bitter
Joseph Likes Tea No 6 Bitter Fruit Contains: Brisk Berry Sweet - Citriona Seed Sour-Tonic Flower Bitter. Brisk Berry Sweet = Revitalising - Citriona Seed =Good for the Skin - Tonic Flower Bitter = Boosts Immunity
Duke, (Boy at the gate) Likes Tea No 6. 6 Bitter Fruit Contains: Brisk Berry Sweet - Citriona Seed Sour-Tonic Flower Bitter. Brisk Berry Sweet = Revitalising - Citriona Seed =Good for the Skin - Tonic Flower Bitter = Boosts Immunity
Marina like's Tea Blend 04 Root Remedy using 1 Oasis Leaf, 5 Joy Root Clover, and 6 Tonic Flower. Refined in flavor, this tea warms the body and improves circulation. Drink it at the start of a cold.
Duke, (Boy at the gate) Likes Tea No 6. 6 Bitter Fruit Contains: Brisk Berry Sweet - Citriona Seed Sour-Tonic Flower Bitter. Brisk Berry Sweet = Revitalising - Citriona Seed =Good for the Skin - Tonic Flower Bitter = Boosts Immunity
Joseph, (Photo Shop) Likes Tea No 6. 6 Bitter Fruit Contains: Brisk Berry Sweet - Citriona Seed Sour-Tonic Flower Bitter. Brisk Berry Sweet = Revitalising Citriona Seed =Good for the Skin Tonic Flower Bitter = Boosts Immunity
Joseph, (Photo Shop) Likes Tea No 6. 6 Bitter Fruit Contains: Brisk Berry Sweet - Citriona Seed Sour-Tonic Flower Bitter. Brisk Berry Sweet = Revitalising - Citriona Seed =Good for the Skin - Tonic Flower Bitter = Boosts Immunity
Joseph, (Photo Shop) Likes Tea No 6. 6 Bitter Fruit Contains: Brisk Berry Sweet - Citriona Seed Sour-Tonic Flower Bitter. Brisk Berry Sweet = Revitalising - Citriona Seed =Good for the Skin - Tonic Flower Bitter = Boosts Immunity