http://www.cannabis-med.org/data/pdf/2001-03-04-7.pdfJohn M. McPartland
Ethan B. Russo
SUMMARY. A central tenet underlying the use of botanical remedies is
that herbs contain many active ingredients. Primary active ingredients
may be enhanced by secondary compounds, which act in beneficial synergy. Other herbal constituents may mitigate the side effects of dominant
active ingredients. We reviewed the literature concerning medical cannabis and its primary active ingredient, ∆9-tetrahydrocannabinol (THC).
Good evidence shows that secondary compounds in cannabis may enhance the beneficial effects of THC. Other cannabinoid and non-cannabinoid compounds in herbal cannabis or its extracts may reduce THC-induced anxiety, cholinergic deficits, and immunosuppression. Cannabis terpenoids
and flavonoids may also increase cerebral blood flow, enhance cortical activity, kill respiratory pathogens, and provide anti-inflammatory activity
This is a bit of a massive read but it worth it. I will try dissolve some of the information into more bite size chunks but all credit to the people doing the actual research