I'm familiar with each of the individual herbs in the complex.
Ashwagandha (aka Wythinia) is a nightshade, and acts as a soporific. It will help with relaxation and sleep, and can act as a nervine and anti-spasmodic with proper dosing. It's very, very effective for stress damage, and for managing sleeplessness and anxiety -- especially "busy head syndrome". Cautions include that it is a goitrogen, and in consistent doses may affect the thyroid, and that in high or prolonged doses may affect the liver. Alternatives include Valerian Root (which also has some risk to the liver) and Lemon Balm (Melissa Oficionalis), which also act as soporifics and nervines.
Licorice is considered to be a support for the endocrine system, and in particular for the pancreas. It is a legume, but the portion used for herbal remedies is typically an extract from the roots. Traditional healing has used licorice to support cardiovascular health, and to regulate blood sugar, as well as to relieve persistent cough (especially dry cough). Cautions are that prolonged or excessive doses may cause liver damage or cardiovascular damage.
Skullcap is an axiolytic (anti-anxiety). It is sometimes used as a tonic in low doses, and in combination with other herbs like valerian, assists in relaxation and restful sleep. It is important that the type of skullcap being used is s. baicalensis/s. macrantha and not s. lateriflora, as the latter, though less expensive, is much higher in potential toxins.
Korean Ginseng is typically used as a general tonic, anti-inflammatory, support for the endocrine system, and in management of blood sugar levels. It is usually well tolerated, but it is important to make sure that you're getting Panax ginseng, and not a cheaper substitute. Also, it can cause some individuals to feel energetic to the point of distraction -- this is actually a 'side effect' and if it happens, it is recommended that the dosage be reduced until the over-energetic/fidgety sensation diminishes.
The remainder of this is my personal opinion, so take it with a grain of salt.
In general, I'm not really big on using "combination" herbs/remedies. It's too easy to have someone have a poor reaction to one of the ingredients, and have it become difficult to determine which of the items was at fault -- in addition, if you're using a pre-combined therapeutic, dosages of individual herbs cannot be adjusted for personal need. I would ask your naturopath whether she can recommend dosages of the individual herbs for you, and assist you with regulating the doses to your own personal body chemistry and health needs. If she is unable to do so, I would suggest that perhaps you seek out a different professional who is able to develop targeted individual treatments, rather than "one-size-fits-all" herbal combinations. Just my two cents.