Otherwise, ask your pharmacist or call the manufacturer's customer hotline. Some medications that are too small or unwieldy to split can be crushed and divided into equal parts. Again, ask your pharmacist before doing this. Tiny mortar and pestle sets can be found at health-food or cooking shops. Obviously, it's difficult to get precise doses with crushed pills.
Some medications come in patch form.
Tempting though it may be, don't try cutting these patches to get a smaller dose or to move up to a larger dose gradually. Doing so will keep the medication from being absorbed properly. These pharmacies are especially helpful to individuals with allergy problems. Many pills and syrups contain common allergens, including eggs, soy, corn, and dyes. If a hypoallergenic version isn't available from the manufacturer, seek out a compounding pharmacy.