Once youâre eligible for Medicare, youâll have an initial enrollment period to sign up for Medicare. For most people, the initial enrollment period starts 3 months before their 65th birthday and ends 3 months after their 65th birthday.
Excipient. An excipient is generally a pharmacologically inactive substance formulated with the active ingredient of a medication. Excipients are commonly used to bulk up formulations that contain potent active ingredients, to allow convenient and accurate dispensation of a drug substance when producing a dosage form.
These are products such as aluminium salts that help to improve the immune response to vaccines, or products that act as preservatives and stabilisers (for example, gelatine or human serum albumin). These are listed on vaccine information leaflets as âexcipientsâ (inactive ingredients). Like vaccines, most of the medicines we use also contain excipients. Most vaccines do not now contain the preservative thiomersal (also called thimerosal).