At Merck, they believe that no one should go without the medicines or vaccines they need. That is why the Company provides its medicines and adult vaccines for free or at discounts to people who do not have prescription drug or health insurance coverage and who, without our assistance, cannot afford their Merck medicine and vaccines. This is consistent with Merck's long-held values and traditions of putting patients first.
You can apply to see if you qualify at their website.

Merck Programs to Help Those in Need