Kirkland signature/ Costco multivitamins

Hi all
I visited USA for the first time and went to Costco along withy friend. She told me she bought Kirkland multivitamins fie her parents and asked me to but too. So I bought one mature multivitamin and one normal multivitamin and one vitamin c box for my parents.
Suddenly I got worried that since I am going to be giving to my parents I should check reviews. Has anyone ever had these mvt.are they good ? Are there any side effects of this brand
. I am back in India. I can't return those back but I would not want to risk my parents health if its not good. I am ok wasting that money rather than giving them without finding out.
Can anyone please tell me if you have used or anyone you know have used it.

 

Thank you so much emerald. I saw in amazon some reviews saying they cause heaviness in chest so got a bit worried.thanks for the feedback.