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May slow clotting; contraindicated for people with bleeding disorders and before and after surgery. May induce uterine contractions; contraindicated when pregnant or nursing. [21] Pyrrolizidine alkaloids (contained in comfrey, borage, senecio, coltsfoot, and others) Liver damage [5] Reserpine: Rauvolfia serpentina
[37] [38] Oil isolated from catnip by steam distillation is a repellent against insects, in particular mosquitoes, cockroaches, and termites. [39] [40] Research suggests that, while a more effective spatial repellant than DEET, [41] it is not as effective of a repellent when used on the skin of humans as SS220 or DEET. [42]
The reaction to silver vine is similar to the response to catnip, but appears to be more intense. [12] Silver vine is an alternative to catnip, and many cats that do not react to catnip will respond positively to silver vine powder made from dried fruit galls. [12] Typical behaviors include rolling, chin and cheek rubbing, drooling, and licking.
The term "herbal" tea is often used to distinguish these beverages from "true" teas (e.g., black, green, white, yellow, oolong), which are prepared from the cured leaves of the tea plant, Camellia sinensis. Unlike true teas, most tisanes do not naturally contain caffeine (though tea can be decaffeinated, i.e., processed to remove caffeine). [4] [5]
Catnip can be used in veterinary clinics, shelters, and foster homes in addition to a cat's own home to help lower stress levels. Catnip is non-toxic to cats. Although rare, overindulgence can ...
1912 advertisement for tea in the Sydney Morning Herald, describing its supposed health benefits. The health effects of tea have been studied throughout human history. In clinical research conducted over the early 21st century, tea has been studied extensively for its potential to lower the risk of human diseases, but there is no good scientific evidence to support any therapeutic uses other ...
The berries and leaves of several species are mildly toxic to humans, dogs, cats, livestock, rabbits, and tortoises, containing terpenoid glycosides which can cause extreme irritation to the hands and mouth upon contact and digestive distress if ingested; children and small animals are particularly susceptible. [151]
Methamphetamine use can be neurotoxic, which means it damages dopamine neurons. [71] As a result of this brain damage, chronic use can lead to post acute withdrawal syndrome. [72] Caffeine: Often found in coffee, black tea, energy drinks, some soft drinks (e.g., Coca-Cola, Pepsi, and Mountain Dew, among others), and chocolate. It is the world's ...