Is Susten 300 Effective For Irregular Periods?

Helooo My question to u is dat I hve a problem of irregular periods n my doc recommended me susten300 bt I hve seen on net dat its for pragnenet womens. bt I m just 23 n dis problm of irregulr periods is from the tme I had my periods for d 1 st tme.so plz tel me is dis capsules susten 300 are good for me or nt