Hello
@PlantsHeal and welcome to CivilWarTalk - the best place on the internet for Civil War discussion.
Unfortunately, many doctors back in the 1860's had similarly awkward handwriting as modern doctors.

They used a lot of Latin words and abbreviations. I've tried to post them as I run across them in the Medical Terms index here at CWT, but since there was no exact standard for formatting abbreviations, doctors used a variety of abbreviations to indicate the same word. They likely adopted the abbreviations used by the doctor(s) they trained under. I have no source or data to confirm - it's purely speculation on my part.
Recipes or formulas for medicines used some unusual symbols for measurement based on the British Apothecary system. You might run across these in the treatment notes or in "recipes" and be unable to identify them as regular letters. Here are three of the most common ones - ounce, dram, and scruple.
View attachment 348757 OunceView attachment 348762Drachm View attachment 348763Scruple
I remember the first time I saw the symbol for ounce - I thought I had developed double vision because it looks like a 3 with the top half of another 3 above it. Here's a chart that should be very helpful when you run across a symbol that you don't recognize as a regular letter.
It's important to note that "prescriptions" were not written for a specific individual. Many towns did not have an actual apothecary so many doctors did their own compounding. They had their favorite "recipes" that were prescribed for whatever ailed you. Here's one for Paregoric.
Best opium
View attachment 348764 [1/2 dram] dissolved in about 2 tablespoons of boiling water.
Then add benzoic acid
View attachment 348765 [1/2 dram]; oil of anise 1/2 fluid
View attachment 348756; clarified honey 1
View attachment 348758 , camphor gum 1
View attachment 348759; alcohol, 76 per cent, 11 fl.
View attachment 348760 ; distilled water 4 1/2 fluid
View attachment 348761; macerate [steep]; keep warm for two weeks.
Dose: For children, 5 to 20 drops, adults, 1 to 2 teaspoons.
Perhaps if you could post a snip or screenshot of a page you are working on, we could be of assistance. Let me know if you have other specific questions. I'm happy to help.
View attachment 348751
dram
View attachment 348754 drachm
View attachment 348755 [same thing]