Hi im planing to take weider mega mass 4000 to...

Dear Customer
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Can you use mega mass 4000 to increase weight ?
yes you can , but it should be accompanied training and working out , besides you have to follow some tips to avoid its side effects which can be harmful 
for how long should you work out before start taking protiens ?
its depends on many factors such as your current weight/ height status , how is your training , and what is the goal of using protients , but usually its recommanded to avoid taking suppliments before 2 months of steady workout 
Does protiens powder have side effects ?
of course , they have side effects and possible risks if were taking without doctor or trainer consultation and supervising such as :
1. liver issues 
2. kidney isseus 
3. upset stomach and uncomfortable gastric tract
General advices :
1. you dont need portients shakes if you have any liver or kidney chronic disease 
2. its better to consult your doctor before start taking any supplimnets 
3. drink plenty of water while you are on protiens 
4. protiens cant be used instead of meals and cant be ignored 
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Kind Regards