Reducing and Enlarging Formulas

This video shows how to reduce or enlarge a formulas for pharmaceutical preparations and provides key examples.

[@msslily12]

Thank you so much for this information! As someone who's always struggled with math, you made this so easy to understand and visualize! :) Great job!

[@beautifulminded8672]

I'm a pharmacy technician student attending school for 7 months now and you are the first to explain calculations where it's understood. The steps are great tools I will be utilizing. WOW!! Your teaching has given me more confidence in my ability to learn. Thank you!!

[@beezyburna]

great instructor!

[@PharmaceuticalCalculationsEasy]

Thank you, @beezyburna for watching and for the kind comment.

[@sorryurbroke24]

Good job my friend

[@nebetnebet7507]

Tnx,you make it easy

[@PharmaceuticalCalculationsEasy]

Thank you Nebet Nebet for watching and for the kind comment.

[@henijoka]

10q boss you make things easy for me

[@PharmaceuticalCalculationsEasy]

Thank you Hena for watching and for the comment.

[@muftahf.s7535]

شكرا لك ❤

[@NatashaImany-wv7cl]

I love it may God bless u

[@PharmaceuticalCalculationsEasy]

Thank you, @NatashaImany-wv7cl for watching and for the comment.

[@ReimitsuKonhara]

How did you get the 100g in % w/w?

[@mawddahll1911]

Thank you so much !!!!!!!

[@PharmaceuticalCalculationsEasy]

You're welcome! Thank you Mawddah for watching and for the comment.

[@olivaia]

In example number 2, where did I get the 1 in the factor isn't it supposed to be 3.5?

[@theprince1775]

Thanks a lot

[@anaisbuendia8914]

For number 3, Why did you multiply 3.5g * 2000? How do you know the weight of one ointment is 3.5g?

[@PharmaceuticalCalculationsEasy]

Thanks Anais for watching and for the question. The formula in Example 2 is for one ophthalmic ointment tube and each tube is 3.5 grams. The way we know that is to look at the very last line of the formula where it says add sufficient quantity (qs ad) of white petrolatum to make 3.5 grams. We multiply the 3.5 g by 2000 because we want to make 2000 ointment tubes and need to know how much of each component is needed for the larger quantity that we want to compound. Hope this helps.

[@samsonridge4526]

@@PharmaceuticalCalculationsEasy thanks.I also had the same quetion

[@catherinesmith3637]

Why didn't you jus convert them to grams first then times by 50 jus wanna know🤔 7:22

[@ksprobin9290]

I did not understand why you Subtraction at this step 12:05

[@PharmaceuticalCalculationsEasy]

Thank you ROBIN for watching and for the question. From the formula, you need to add sufficient quantity of the white petrolatum to get the 3.5g. When we enlarge the formula to make 7000 g of ointment we need to subtract the amounts (in grams) of all the other ingredients calculated to get the amount of the white petrolatum base needed for the preparation. Hope this helps.

[@mmmm-bi1jz]

Thank you

[@PharmaceuticalCalculationsEasy]

Thank you for watching and for the comment.

[@theprince1775]

But I want you to help me to give me a lot of solutions of some chapters

[@andreanicole3969]

in example no. 2 where did you get 100 g?

[@PharmaceuticalCalculationsEasy]

The 100 g comes from the definition of percentage strength based on weight by weight (kzbin.info/www/bejne/qIXLm4uInZyEqsk). For example 10% w/w means 10 g in 100 g preparation. I hope this explanation helps.

[@hassanjasem3740]

Pharmaceutical Calculations Please translate to Arabic

[@shrooq5436]

I WANT to tranzalated to arabic language

[@hassanjasem3740]

Please translate to Arabic❤️❤️

[@PharmaceuticalCalculationsEasy]

Thanks for the comment and for watching. We are looking into translating our videos to Arabic.