After searching for your prescription, you'll see a list of pharmacies and prices. You should also see some drop-down options with blue text just above those listings where you can select brand name or generic, form (e.g. tablet or cream), dosage (e.g. 100 mg) and quantity.
Click on each available drop-down option to change the drug from generic to brand name, or select your correct form, strength and quantity. The prices will reload to show you coupons matching your prescription at pharmacies in your area.
(i.e. changing from tube of gel to capsule)
Click on the tab that shows the listed form and a drop-down menu will appear with all of the available forms to choose from. Select the form that matches your prescription.
(ex. Changing from 300mg to 150mg)
Click on the tab that shows the listed strength, and a drop-down menu will appear with all of the available strengths for your selected form. Select the strength that matches your prescription.
(ex. Changing from 40 capsules to 100 capsules)
Click on the tab in the Prescription Settings header that shows the listed quantity, and a drop-down menu will appear with a few options to choose from. If you don't see your quantity in the options listed, locate the "Enter a custom quantity" box at the very bottom of this drop-down. Enter your custom quantity into this box and select the blue "SET" button.