Sweet Annie tea is made by steeping about 5 grams of dried leaves and stems in 1 liter of boiling water, then letting it cool slightly before drinking. That 5 grams is roughly one small handful of dried plant material. The process is simple, but a few details around temperature, steeping time, and plant quality make a real difference in what ends up in your cup.
Basic Recipe and Ratios
The standard preparation calls for 5 grams of dried Sweet Annie (Artemisia annua) leaves and stems per liter of water. You don’t need a precise scale for this. Five grams of the dried herb is about one small, loose handful. If you’re making a smaller batch, use roughly 2.5 grams (a large pinch) per 500 milliliters of water.
Effective preparations have been documented across a range of 3 to 12 grams per liter, so there’s some flexibility. Starting at 5 grams per liter gives you a middle-ground concentration that balances flavor and potency. The tea has a distinctly herbaceous, slightly bitter taste. Some people add honey or lemon to make it more palatable.
Water Temperature and Steeping
Most traditional preparations use freshly boiled water (100°C), poured directly over the dried herb. However, laboratory research on the plant’s key compound, artemisinin, suggests that extraction is most efficient around 80°C before thermal breakdown starts to become a factor. In practical terms, this means bringing your water to a full boil, then letting it sit for two to three minutes before pouring it over the herb.
Let the tea steep for 10 to 15 minutes with a lid or cover on the cup or pot. Covering the vessel matters because some of the plant’s volatile compounds can escape with the steam. After steeping, strain the plant material out. You can drink the tea warm or let it cool to room temperature. If you’ve prepared a full liter, it can be consumed throughout the day.
What Ends Up in the Tea
A plain water infusion extracts only a small fraction of the artemisinin in the leaves, roughly 0.18% of the dry weight. That’s far less than what pharmaceutical extraction methods pull out. A study with 14 healthy volunteers who drank one liter of tea made from 9 grams of the leaves found that artemisinin did reach the bloodstream, with peak plasma levels averaging 240 nanograms per milliliter. Interestingly, artemisinin was absorbed faster from the tea than from solid oral capsules, though overall bioavailability was comparable.
But artemisinin isn’t the only thing in your cup. Sweet Annie leaves contain a range of flavonoids, tannins, phenolic acids, and coumarins. These plant compounds have antioxidant and anti-inflammatory properties on their own, and research suggests they may enhance the activity of artemisinin by slowing how quickly the body metabolizes it. So the tea delivers a broader chemical profile than isolated artemisinin, even though the artemisinin concentration itself is low.
Choosing and Storing the Herb
The potency of your tea depends heavily on when the plant was harvested. Artemisinin levels in Sweet Annie peak at the end of the vegetative stage, just before flowering begins. In temperate climates like the eastern United States, this window falls in late August to early September, when day length drops below about 13.2 hours and average temperatures hover around 21°C. Leaves harvested during this window contain significantly more artemisinin than those picked earlier in the season or after flowering.
If you’re growing your own, harvest the leafy upper portions of the plant during this pre-bloom period. Drying method doesn’t appear to make much difference. Research comparing oven, sun, and shade drying found that artemisinin levels remained stable across all three approaches. Store dried leaves in an airtight container away from light and moisture. If you’re buying dried Sweet Annie, look for sources that specify harvest timing or at least confirm the leaves were collected before the plant flowered.
Safety Considerations
Sweet Annie tea is generally well tolerated in short-term use, but it’s not without risk. The most serious concern is liver toxicity. New Zealand’s medicines safety authority documented 25 cases of liver harm associated with Artemisia annua extract products, including hepatitis, jaundice, and elevated liver enzymes. One case of liver cirrhosis was also reported. The estimated rate was roughly 0.5 to 6.3 cases per 10,000 consumers.
These reports involved concentrated extract products rather than traditional tea, so the risk from a simple water infusion is likely lower. Still, it’s worth being aware of warning signs: nausea, stomach pain, unusually pale stools, dark urine, itching, or yellowing of the skin or eyes. If any of these develop, stop drinking the tea.
Pregnant women should avoid Sweet Annie entirely, as artemisinin compounds have shown embryotoxic effects in animal studies. People with existing liver conditions or those taking medications processed by the liver should also exercise caution.
What Sweet Annie Tea Won’t Do
Sweet Annie has a long history in traditional Chinese medicine (where the plant is known as Qing Hao), and its artemisinin content inspired the development of modern antimalarial drugs. That history has led to marketing claims about the tea as a treatment for malaria, cancer, and other serious diseases. The reality is more limited.
The World Health Organization reviewed the evidence in 2019 and explicitly stated it does not support the use of Artemisia plant material in any form for preventing or treating malaria. The reasoning is straightforward: the artemisinin content in herbal preparations varies too much from batch to batch, concentrations are often too low to clear a malaria infection completely, and incomplete treatment could accelerate drug resistance. Proven, affordable antimalarial treatments already exist.
None of this means the tea is useless. Many people drink it for general wellness, its antioxidant content, or its traditional uses for digestive and inflammatory complaints. But treating it as a substitute for medical treatment of serious infections or diseases would be a mistake. The compounds in the tea are real, and they do reach your bloodstream, just not at the concentrations needed to replace standardized medications.