What is the ruling on taking free lactation vitamins from the husband's workplace, which allows all medications except cosmetics?

Lactation vitamins do not seem to fall under cosmetic drugs, and this can be confirmed by asking specialists. The condition of the employer regarding dispensing medication must be adhered to, because the Prophet, peace and blessings be upon him, said: “Muslims are bound by their conditions,” and Al-Qasim ibn Muhammad said: “I have only found people to be bound by their conditions regarding their wealth and what they have given.”