PDDS LAB MIDTERM

Introduction to Ointments and Types00:00:01

The video begins with an introduction to the midterm laboratory discussion focusing on semi-solid preparations such as ointments and suppositories. It defines ointments into medicated types containing active pharmaceutical ingredients and non-medicated types used as emollients or moisturizers.

White Ointment and Preparation Methods00:03:56

The lecture discusses white ointment as a non-medicated example made from white wax and petrolatum. It details the two methods of preparation: the levigation or incorporation method (no heat) and the fusion method (requires heat), explaining that white ointment uses the fusion method.

Ointment Bases and Labeling00:14:11

This section covers the four classes of ointment bases: hydrocarbon, absorption, removable, and water-soluble. It explains proper labeling techniques, emphasizing that ingredients should be listed by weight in descending order and that auxiliary labels like 'External use only' are required.

Sulfur Ointment and Zinc Oxide Paste00:25:29

The discussion moves to sulfur ointment as a medicated type used for ringworm and scabies, prepared via the levigation method due to heat-sensitive ingredients. It then covers zinc oxide paste, a stiffer semi-solid preparation used as a skin protectant, also using the incorporation method.

Creams00:34:01

Creams are introduced as semi-solid preparations that are easier to spread than ointments. The two types are explained: oil-in-water (easier to wash) and water-in-oil (more occlusive and difficult to wash).

Glycerine Suppositories00:38:19

The final preparation discussed is glycerine suppositories. It defines them as solid dosage forms inserted into body orifices that melt at body temperature. It covers the three main types (rectal, vaginal, urethral) with their respective shapes and weights, along with the three base types: fatty/henus, water-soluble/miscible, and miscellaneous.

Preparation and Uses of Suppositories00:52:46

This part explains the molding and fusion method used for glycerine suppositories. It lists ingredients such as glycerine (laxative), sodium carbonate, and stearic acid (solidifying agents). It notes that glycerine suppositories are bullet-shaped and wrapped in aluminum foil after cooling.

Encouragement and Closing Remarks00:57:27

The instructor concludes with personal encouragement for students facing midterm pressure. She shares a personal testimony about finding purpose beyond academic achievements and advises students to seek wisdom through prayer and not to define their worth by grades or exam results.