-If you want to make your purchase with cash payment, choose the red button (complete purchase), enter your shipping information and you will be provided with an account number for payment at Guadalajara pharmacies, Saving pharmacies, Seven Eleven or Chedrahui. this is only form Mexico -If you want to buy with a credit or debit card, choose the yellow PayPal button, the system will confirm that it is a secure purchase, choose your card type, and that's it.