NEKTON-TONIC 120 grams (4.25 oz) 3 high-grade tonics individually attuned to the needs of fruit, insect and seed-eating birds. NEKTON-TONIC-F for fruit-eating birds NEKTON-TONIC-K for seed-eating birds NEKTON-TONIC-I for insect-eating birds The variety and combination of the more than 60 nutritive and effective substances in these supplements make the NEKTON-TONIC series to valuable tonics for strengthening and building up an animal's organism. Heading the list of nutritive and effective substances are the amino acids and vitamins as well as the macro and trace elements. The effectiveness of the NEKTON-TONIC products lies in their species-specific formulas which ensure full availability, immediate utilisation and correct physiological functioning and interaction of the components.