RH Herbal Preparations & Dosage Forms 3

Question 1

When filling capsules with dried herb powder, the most important practical consideration is:

Accepted Answer

The density and fill weight of the powder relative to the capsule's volume capacity

Answer

The color of the powder, which indicates potency

Answer

Using only size 00 capsules regardless of herb or dose

Answer

The solubility of the herb powder in gastric acid

Question 2

The Dried Herb Equivalent (DHE) value on a concentrated extract label is used to:

Accepted Answer

Compare the potency of a concentrated extract to a standard amount of dried herb

Answer

Calculate the moisture content remaining after drying the plant

Answer

Determine the fresh-to-dried weight conversion ratio during processing

Answer

Measure total polyphenol content in the finished extract

Question 3

Which extraction method is most appropriate for preserving the mucilaginous polysaccharides in marshmallow root (Althaea officinalis)?

Accepted Answer

Cold water infusion or overnight maceration in cold water

Answer

Vigorous hot water decoction for 30 minutes

Answer

High-alcohol tincture at 70% ethanol

Answer

Supercritical CO2 extraction

Question 4

What is the primary role of glycerin when added to a water-based herbal preparation?

Accepted Answer

To act as a humectant and mild preservative while improving palatability

Answer

To increase the effective alcohol content and improve extraction yield

Answer

To enhance bitter taste for improved digestive stimulation

Answer

To accelerate the extraction of tannins from plant cell walls

Question 5

Amber glass is the preferred storage container for herbal tinctures and liquid extracts because it:

Accepted Answer

Filters ultraviolet light to protect photosensitive phytochemicals from degradation

Answer

Allows the practitioner to visually monitor any color changes over time

Answer

Prevents alcohol evaporation more effectively than clear glass

Answer

Is mandated by federal regulation for all commercially sold herbal products

Question 6

A topical liniment differs from a fixed-oil herbal infusion primarily in that it:

Accepted Answer

Uses a volatile solvent such as rubbing alcohol that evaporates on the skin surface

Answer

Contains essential oils blended at higher therapeutic concentrations

Answer

Is prepared exclusively by cold infusion rather than warm infusion methods

Answer

Must contain a minimum of 10% arnica extract per regulatory standards

Question 7

If the therapeutic dose of an herb as dried powder is 4 grams, what is the equivalent dose of a 4:1 concentrated extract?

Accepted Answer

1 gram

Answer

4 grams

Answer

16 grams

Answer

2 grams