Tutorial 1 by Melbha Starlin https://padlet.com/melbha/6iwg9oora1w0 Made with ♥ en-us 2018-02-27 07:58:11 UTC 2025-11-08 07:07:27 UTC hello@padlet.com Calculate the percentage of anhydrous dextrose required to render a 1% solution of ephedrine hydrochloride iso-osmotic with body fluidsGiven E value of 1% ephedrine hydrochloride is 0.30E value of 1% dextrose is 0.18 melbha https://padlet.com/melbha/6iwg9oora1w0/wish/235756418 %w/v of NaCl required = 0.9-(0.30*1)
0.6%w/v /0.18 =3.33%w/v of dextrose]]> 2018-02-27 08:08:31 UTC https://padlet.com/melbha/6iwg9oora1w0/wish/235756418 Find the quantity of NaCl to be used in this prescriptionRxEpinephrine HCl 1%Scopolamine HBr 0.5%NaCl q.sPurified water 60 mLMake isotonic eye solution.E value of epinephrine HCl and scopolamine HBr is 0.29 and 0.12 respectively. melbha https://padlet.com/melbha/6iwg9oora1w0/wish/235756884
%w/v of NaCl required = 0.9-(1*0.29 + 0.5*0.12)
0.55%w/v of NaCl
0.33 g NaCl for 60 mL]]> 2018-02-27 08:10:37 UTC https://padlet.com/melbha/6iwg9oora1w0/wish/235756884 How many grams of dextrose should be used in compounding the prescription? Ephedrine HCl 0.5 g Chlorobutanol 0.25 g Dextrose q.s Rose water 50 mL Make isotonic nasal solution.Sodium chloride equivalents are as follows: Ephedrine HCl = 0.30 Chlorobutanol = 0.18 Dextrose = 0.16 melbha https://padlet.com/melbha/6iwg9oora1w0/wish/235758315 %w/v of NaCl required = 0.9-(0.5/50*100*0.3 + 0.25/50*100.*0.18)
0.51%w/v of NaCl/0.16 
3.18%w/v dextrose
1.59 g of dextrose]]> 2018-02-27 08:17:59 UTC https://padlet.com/melbha/6iwg9oora1w0/wish/235758315 Find the quantity of boric acid in grams to be used in compounding the following prescription melbha https://padlet.com/melbha/6iwg9oora1w0/wish/235759084 Rx
API1        0.1 g
ZnSo4    0.05 g
boric acid q.s.
Water       30 mL
Make isotone ophthalmic
E values as below
API1= 0.18
ZnSo4= 0.05
Boric acid= 0.52
%w/v of NaCl required = 0.9-(0.1/30*100*0.18 + 0.05/30*100.*0.15)
= 0.9- 0.085
=1.57% for 100 mL
for 30 mL need 0.47 g]]> 2018-02-27 08:21:52 UTC https://padlet.com/melbha/6iwg9oora1w0/wish/235759084 Find the quantity of NaCl required in compounding the following prescription E value of cocaine HCl is 0.16 melbha https://padlet.com/melbha/6iwg9oora1w0/wish/235759786 Rx
Cocain HCl   0.2 g
NaCl              q.s
Water            30 mL
Make isotonic solution 
Sig. One drop in each eye

%w/v of NaCl required = 0.9-(0.2/30*100*0.16) 
=0.9- 0.106
=0.794%
0.794g for 100 mL
so for 30 mL need 0.24 g]]> 2018-02-27 08:24:14 UTC https://padlet.com/melbha/6iwg9oora1w0/wish/235759786 https://padlet.com/melbha/6iwg9oora1w0/wish/235779129 Hello 😊]]> 2018-02-27 09:40:58 UTC https://padlet.com/melbha/6iwg9oora1w0/wish/235779129