Is This a Good Post Workout Drink?

Nutritional Information (Average)
Serving Size – 250ml
Colours are used in the Strawberry and Iced Coffee flavours. Cocoa is used in the Choc Ice flavour.

Per Serve (250ml) Per 100ml
Energy (kJ) 850 340
(Cal) 203 81
Protein: (g) 9.0 3.6
Fat, total: (g) 3.8 1.5
- Saturated fat (g) 0.5 0.2
- Trans fat (g) 0.0 0.0
- Polynsaturated fat (g) 2.3 0.9
- Monounsaturated fat (g) 1.0 0.4
Carbohydrate:
- Total: (g) 30.8 12.3
- Sugars: (g) 18.5 7.4
Dietary Fibre: (g) 3.8 1.5
Sodium (mg) 188 75
Potassium (mg) 463 185
Vitamin A (mg) 127 (17%) 51
Thiamin (mg) 0.28 (25%)* 0.11
Riboflavin (mg) 0.43 (25%)* 0.17
Niacin (mg) 2.5 (25%)* 1.0
Vitamin B12 (µg) 0.9 (45%)* 0.36
Vitamin C (mg) 10 (25%)* 4
Folate (µg) 100 (50%)* 40
Vitamin B6 (mg) 0.40 (25%)* 100
Calcium (mg) 400 (50%) 160
Phosphorus (mg) 250 (25%) 100
*Percentage of Recommended Dietary Intake (RDI)

9g protein and 31g carbs? in 250 ml? good or no?