4 PACK Siege Pre-Workout With Zero Sugar – 240 Servings – Fruit Punch flavor – for only $19.49. That’s just $4.87 each and SHIPS FREE. Siege Pre Workout features a 4-stage pump matrix, combining Arginine Nitrate, Arginine HCl, Citrulline, and Norvaline to ensure users get the most from their pre-workout.