Letters that make proprietary drug
a, o, d, e, g, p, r, t, i, u, y are letters that make 'proprietary drug'
Words within proprietary drug
rug, IE, PR, ETA, drug, eta, ar, tar, Ro, RI, proprietary, pro, ie, prop, AR, Ar, Pr, Ru, Ta are words within 'proprietary drug'