I'm posting this info of the crossing I just took as there is almost no info on the internet about it. Take a taxi from the Reynosa airport to downtown for $25US. Or for 8 pesos... From the Reynosa airport, walk 10 minutes to the main road (see Googlemaps). This is a very busy road with half a dozen lanes on each side. However, 30 seconds east of the airport road is a crossing WITH American-style crosswalk. Press the button, wait until the traffic light turns red and cross on your green!
One oral, one IV: Both are actually the same medicine, but Amoxicillin is the oral form of the medication and Ampicillin is the IV form of the medicine. I have actually also seen a few times oral Ampicillin listed as being available, but usually the oral form that is most stable and palatable is the amoxicillin.
Answer Wiki. Both Amoxicillin and penicillin are antibiotics, the only subtle difference between them is that penicillin is synthetically produced. However, amoxicillin is a semi-synthetic penicillin medicine. Amoxicillin can be called as an improved version of penicillin.