Every so often, I don't know their schedule, this health truck parks near the Guadalajara pharmacy. You can get a mammogram, or an osteoporosis test for 420 pesos each or a free eye exam. They sell glasses and also some meds. I got an osteoporosis test today. Not good news. Now I know why it is taking my ankle so long to heal and why my back hurts so much. Getting old is for the birds.