This was absolutely brilliant
Something you might consider, altough perhaps you consider it out of your scope - Ancient folk remedies that don't quite qualify as magic. There's a particularily great chapter in "De Agricultura", a text on running the perfect roman farm, that has such fantastic and easy-to-do cures as....
"To prevent chafing: When you set out on a journey, keep a small branch of Pontic wormwood under the anus."
Or perhaps you feel like vomiting profusely?
"Recipe for a purgative, if you wish to purge thoroughly: Take a pot and pour into it p153six sextarii of water and add the hock of a ham, or, if you have no hock, a half-pound of ham-scraps with as little fat as possible. Just as it comes to a boil, add two cabbage leaves, two beet plants with the roots, a shoot of fern, a bit of the mercury-plant,119 two pounds of mussels, a capito120 fish and one scorpion, six snails, and a handful of lentils. 2 Boil all together down to three sextarii of liquid, without adding oil. Take one sextarius of this while warm, add one cyathus of Coan wine, drink, and rest. Take a second and a third dose in the same way, and you will be well purged. You may drink diluted Coan wine in addition, if you wish. Any one of the many ingredients mentioned above is sufficient to move the bowels; but there are so many ingredients in this concoction that it is an excellent purgative, and, besides, it is agreeable."
And did you know this about cabbages?!
"Of the medicinal value of the cabbage: It is the cabbage which surpasses all other vegetables. It may be eaten either cooked or raw; if you eat it raw, dip it into vinegar. It promotes digestion marvellously and is an excellent laxative, and the urine is wholesome for everything.114 If you wish to drink deep at a banquet and to enjoy your dinner, eat as much raw cabbage as you wish, seasoned with vinegar, before dinner, and likewise after dinner eat some half a dozen leaves; it will make you feel as if you had not dined, and you can drink as much as you please."