Can i take centrum silver 50 my age is 29 and my heart is beating fast from 1 week ?

You may take the vitamin/mineral supplement. However, for a male it is better to not take a supplement with iron. Fast heart rate needs to be evaluated, depending on how fast. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/.