Ms. Jheng, all of the suggestions above are correct in my opinion., but please bear in mind that we are different, we have different intestinal tissues, cells, the way we eat, the way we drink. For the record, Constipation usually happens because the colon absorbs too much water from the food. If the food moves through the gastro-intestinal tract too slowly, the colon may absorb too much water, resulting in feces that are dry and hard.

It is a good thing to analyze your friend's situation first, some of the causes of constipation are dietary, hormonal or side effects of medication, you may follow what they suggest above but the best way is to undergo your friend on a general check up. I hope it helps

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