Are there any side-effects of endura mass

i used endura mass .......i used it for two months because i am a gymnast.....i was not having any sideeffect from endura mass......but the thing is i was not having any weight gain thats why i left to take endura mass in my diet......but i think weight gain depends on everyone......the effect wil be different for everyone....i will sugegst you to take endura mass for 6 months continuously....then you will have a weight gain...... happy mylotting