I have a few boxes of the Essiac tea, although I havent been drinking it religiously.
The only tiring thing about it, is preperation time as it does take a bit of a song & dance to make it ... but you might like to get some balloons in, invite some friends round & make a day of it.
It isn't normal chuck-a-tea-bag in the cup kind. Oh no. The directions on mine ....
You first bring about 1.5 litres of water to the boil, stir in 15g of the dried tea & leave it to boil for 10 minutes. ( I will miss out the type of pan & water to shorten it

)
Then you remove it from the heat, stir it & allow to cool overnight.
Then the next morning, you reheat it to steaming point (not boiling point) - then after the herbs have settled, you strain it. Then you pour into empty bottles & stand them in tepid water to cool
Store in the fridge. The dosage is 30ml per day in some hot water before bed.
Food shouldn't be eaten within one hour of drinking the tea.
It is a very mild flavour, you do expect it to taste disgusting after all the hoo-ha - it just tastes a tiny bit woody but its fine.
I got mine from an organic herb company, not sure they have a website.
It was sold as Organic Caisse Tea (Rene Caisses Formulation).
This will be the same as the Highernature one.
The story behind Essiac is quite amazing ...
Rene Caisse, received the herbal recipe from an elderly female patient, who was in an Ontario hospital where Rene was the head nurse. The recipe was originally given to the patient by an Ojibwa medicine man, who recovered from her breast cancer by using this tea, and saw no return during the span of the next 30 years.
In 1922, she gave Rene her essiac formula ("essiac" being the name "Caisse" spelled backwards) as Rene thought that it may possibly help others. Which it did. And for the next fifty years she treated thousands of cancer patients, most of them written off by doctors as terminally ill, with her own secret formula.
Her patients swore by her. Men and women who believed she cured them of cancer, told their friends and families, wrote letters to politicians, swore affidavits, testified before the Canadian Parliament and pleaded with Rene to supply them with more Essiac.
The controversy around Essiac ie) little plants saving you ...has raged in Canada since the 1920's, involving the highest medical, legal and political circles in Canada.
For legal reasons, Essiac was banned & you can't buy tea which is called Essiac anymore. Hence the variations of sheep sorrel complex & caisse tea.
Also it is against the law to give any information on the boxes regarding the tea & its benefits to healing people, so if you want to know about its powers, you have to look it up yourself. Why it is banned is for a different forum ...

I think Essiac originally was 8 herbs, Rene added a few things like red clover, kelp & blessed thistle to enhance the formula - but the four herbs in this tea provide the foundation.
Burdock is an old friend of mine & I have found it really helpful for my skin, so I would really recommend it anyway as it helps liver function & is a blood purifier. It also reduces the pain and swelling of arthritis & was part of the Essiac formula because of its reputation for tumor regression.
Rhubarb, works in removing debris and cleansing for the bowels, as well as liver toxicity & Sheep Sorrel, one of the key components of the tea - is a treatment for blood disorders, including assisting with skin problems.
Anyway, I would give it a stamp of approval to try - it helps all the right things that need to be helped if you have psoriasis!