Which tablets have folic acid and biotin both ? and should it help me to growing my beard faster ?

No: Neither folic acid, nor biotin, nor any other stuff is going to make your beard grow faster. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Drink enough water daily so that your urine is mostly colorless. Practice safe sex.