Visit your Doctor a month before you leave
Tell your Dr you are going to Africa for 2 weeks or 1 month....whatever your trip length is
Have your Doctor write scripts to cover several possibilities
Sleep aid....airplane sleep issue or jet lag trouble after you arive
Motion sickness....jet taxi and stormy weather
Diarrhea.....this happens for several reasons be prepared
Nausea.....same
Antibiotics....broad spectrum to fight off an ear infection or sore throat ect ect
In 2014 my wife made such a bag of meds
She also included Ibuprofen Tylenol Pepto tablets and a couple other things I can't remember
Of the 8 people in our group there wasn't anyone that didn't benefit from this medication assortment
PH's and staff included
I would add to this ( if your Doctor is open to it...) some high octane pain killers if you are going to hunt Dangerous Game.
I did and I thought we were going to need them during a wounded leopard follow up. Turns out we didn't, but my PH needed them for a killer toothache 1000 miles from a dentist he could trust....