2o6 
Glycerin  as  an  Excipient. 
Am.  Jour.  Pharm. 
May,  1876. 
those  made  with  glycerin  never  become  perfectly  hard,  although  they 
are  firm  and  retain  their  shape,  and,  when  held  between  the  fingers  for 
a  while,  and  worked,  they  become  very  pliable.  The  amount  of  syrup 
of  acacia  necessary  is  invariably  larger  than  that  of  glycerin,  as  will  be 
seen  by  the  following  formulas  ;  though  trifling  in  some,  the  difference 
is  sufficient  to  show  that  more  syrup  is  required  : 
R 
Acid,  tannici, 
LJ  Glycerinae, 
(or  syrup,  acaciae, 
M.  ft.  pil.,  No.  viii. 
B 
Pulv.  opii, 
Pulv.  camphorae, 
Acid,  tannici, 
Glycerinae, 
(or  syrup,  acacias, 
M.  ft.  pil.,  No.  x. 
gr.  xvi 
gtt.  iii 
gtt.  iv) 
gr.  v 
gr.  x 
gr.  xxv 
gtt.  v 
gtt.  x) 
R 
Acid  tannici, 
Pulv.  opii, 
Glycerinae, 
(or  syrupi  acacias, 
M.  ft.  pil.,  No.  v. 
R 
Pulv.  opii, 
Pulv.  plumbi  acet., 
Glycerinae, 
(or  syrup,  acaciae, 
M.  ft.  pil.,  No.  xvi. 
gr.  xv 
gr.  iii 
gtt.  ii 
gtt.  v) 
gr.  vin 
gr.  xl 
gtt.  i 
gtt.  ii) 
R 
Aloes  socot., 
Ferri  sulph.  exsic,  aa  gr.  xii 
Glycerinae  (containing  10 
per  cent,  of  alcohol)  gtt.  ii 
(or  syrup,  acaciae,  gtt.  vi 
If  glycerin  alone  is  used  with  these  substances,  the  mass  will  be  ap- 
parently adhesive,  but  upon  rolling,  it  will  crumble,  and  cannot  be 
formed  into  pills  j  this  difficulty  is  overcome  by  the  small  quantity  of 
alcohol. 
R 
Quiniae  sulph. 
Ext.  colocynth.  co., 
Pulv.  capsici, 
Glycerinae, 
M.  ft.  pil.,  No.  xxiv. 
.    gr.  xxiv 
gr.  xviii 
.      gr.  xii 
gtt.  v  (or  syr.  acac,  gtt  xii) 
The  quantity  of  glycerin  in  this  formula  seems  insufficient,  but  upon 
working  with  considerable  pressure,  it  will  be  found  to  be  just  enough 
to  form  a  very  good  mass. 
R 
Quiniae  sulph.,  .  .  ,  •       gr.  xxiv 
Pulv.  capsici,  gr.  xviii 
Glycerinae,  .  .    gtt.  xii  (or  syr.  acac,  gtt.  xii) 
