Five thousand international units in one vial is the size most gonadotropin listings settle on, and this is Bharat Serums and Vaccines' standard presentation at exactly that strength.
The hormone is a two-chain glycoprotein whose beta subunit gives it luteinising-hormone-like activity in men; clinically it sits in fertility work, not in anabolic use. It is supplied as a white freeze-dried cake with a solvent ampoule alongside, to be dissolved and injected. Set against the 2,000 IU vial from the same manufacturer the chemistry is identical — what changes is how much hormone ends up in one sealed container once it has been mixed.