Reducing and Enlarging Formulas

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

[@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.

[@NatashaImany-wv7cl]

I love it may God bless u

[@PharmaceuticalCalculationsEasy]

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

[@sorryurbroke24]

Good job my friend

[@muftahf.s7535]

شكرا لك ❤

[@nebetnebet7507]

Tnx,you make it easy

[@PharmaceuticalCalculationsEasy]

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

[@olivaia]

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

[@henijoka]

10q boss you make things easy for me

[@PharmaceuticalCalculationsEasy]

Thank you Hena for watching and for the comment.

[@theprince1775]

Thanks a lot

[@HopeFulWiseMan]

Dr. I really have problem with determining the quantity of the formula desire and the quantity of formula given!!
Like i do not know which one is formula giving or formula desire !
It is just because of my English?
im arabic though
Will you please tell me how can i know which one is formula desire or formula giving?

[@mawddahll1911]

Thank you so much !!!!!!!

[@PharmaceuticalCalculationsEasy]

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

[@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

[@mmmm-bi1jz]

Thank you

[@PharmaceuticalCalculationsEasy]

Thank you for watching and for the comment.

[@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.

[@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 (ua-cam.com/video/rThjXRh7Qtg/v-deo.html). For example 10% w/w means 10 g in 100 g preparation. I hope this explanation helps.

[@hassanjasem3740]

Pharmaceutical Calculations
Please translate to Arabic

[@catherinesmith3637]

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

[@theprince1775]

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

[@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.