Several herbal teas have measurable effects on hormone levels, with spearmint tea holding the strongest clinical evidence for lowering excess testosterone and chasteberry tea showing promise for balancing prolactin and progesterone. Other teas, including green tea, ashwagandha, and dandelion root, influence hormones through different pathways like improving insulin signaling, reducing cortisol, or supporting how your liver clears excess estrogen.
No single tea fixes every hormonal issue. The right one depends on which hormone is out of balance. Here’s what the research actually shows for each.
Spearmint Tea for High Testosterone
Spearmint is the most studied tea for hormonal regulation, particularly for women with polycystic ovary syndrome (PCOS) or elevated androgen levels. In a randomized controlled trial, women with PCOS who drank spearmint tea twice daily for 30 days had significantly lower free and total testosterone levels compared to a placebo group. Their levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), two hormones that help regulate ovulation, also increased. A separate study found improvements in hormonal markers after just five days of daily use.
Cleveland Clinic notes that most studies used about 5 grams of dried spearmint per day, roughly equivalent to three or four standard tea bags. Two cups daily is the most common dosing in the research. The effect is anti-androgenic, meaning spearmint specifically targets the hormones responsible for symptoms like excess facial hair, acne, and oily skin. It won’t broadly suppress all hormones, just the androgens that tend to run high in conditions like PCOS.
Chasteberry Tea for Prolactin and Progesterone
Chasteberry (from the Vitex agnus-castus plant) works on hormones through your pituitary gland, the small structure at the base of your brain that controls much of your hormonal output. Compounds in chasteberry activate dopamine receptors in the pituitary, which suppresses the release of prolactin. When prolactin is too high, it can disrupt your menstrual cycle, cause breast tenderness, and interfere with ovulation.
The effects appear to be dose-dependent. At higher doses, chasteberry lowers prolactin without changing LH or FSH levels. At lower doses, it may actually shift the balance between estrogen and progesterone, lowering estrogen while raising progesterone. This makes chasteberry particularly relevant for women with irregular cycles, PMS symptoms tied to low progesterone, or mild cases of elevated prolactin. The dose matters, though. Drinking a mild tea and taking a concentrated supplement are not the same thing, and much of the clinical research uses standardized extracts rather than loose-leaf infusions.
Ashwagandha Tea for Cortisol
Cortisol is your primary stress hormone, and chronically elevated levels can cascade into other hormonal disruptions, suppressing thyroid function, raising blood sugar, and interfering with reproductive hormones. Ashwagandha root has been shown to reduce morning cortisol by 23% compared to a placebo group that saw a slight increase of 0.5%. That’s a meaningful shift, observed over about 60 days of consistent use.
Ashwagandha also lowered DHEA-S, another adrenal hormone that serves as a building block for testosterone and estrogen. For people whose hormonal imbalance is driven primarily by chronic stress, ashwagandha addresses the upstream problem rather than targeting individual sex hormones. Because it’s a root, preparing it as a tea requires simmering (a decoction) rather than simple steeping. Twenty to 45 minutes of gentle simmering extracts far more of the active compounds than dropping a tea bag in hot water for a few minutes.
Green Tea for Insulin and Estrogen Balance
Green tea’s hormonal effects are indirect but significant. Its primary active compound improves how your cells respond to insulin by helping glucose transporters move to the surface of your cells, where they can pull sugar out of your bloodstream more efficiently. This matters for hormones because insulin resistance is one of the main drivers of excess androgen production in PCOS and can lower sex hormone-binding globulin (SHBG), a protein that keeps estrogen and testosterone in check.
By improving insulin sensitivity, green tea can help restore the downstream hormonal balance that insulin disrupts. It’s not a direct hormone-lowering tea like spearmint, but for anyone whose hormonal symptoms are tied to blood sugar issues, weight gain around the midsection, or a PCOS diagnosis, green tea targets a root cause. Two to three cups daily is the amount most commonly associated with metabolic benefits in research.
Dandelion Root Tea for Estrogen Clearance
Your liver is responsible for breaking down and clearing used hormones, especially estrogen, from your body. When this process is sluggish, estrogen can recirculate and accumulate, contributing to symptoms like heavy periods, breast tenderness, bloating, and mood swings. Dandelion root supports two key liver pathways involved in this clearance process.
Animal studies show that dandelion enhances the activity of UGT enzymes, which attach a molecule to used estrogen so your body can excrete it through bile and urine. This process, called glucuronidation, is one of the main routes your liver uses to eliminate excess estrogen. Dandelion also influences the enzymes that determine which type of estrogen metabolite your body produces, some of which are more harmful than others. While much of this evidence comes from animal models rather than large human trials, the liver-supporting mechanism is well understood and dandelion has a long safety record as a daily tea. Because it’s a root, simmer it for 20 to 30 minutes for proper extraction.
Red Raspberry Leaf for Uterine Tone
Red raspberry leaf doesn’t regulate hormones directly, but it’s commonly grouped with hormonal teas because of its effect on the uterus. It contains a compound called fragarine that acts on uterine smooth muscle. Early research found that raspberry leaf had a relaxation effect on the uterus with no impact on blood pressure, which is why it has been traditionally used for menstrual cramps and in the later stages of pregnancy to tone pelvic muscles.
If your hormonal symptoms primarily involve painful or heavy periods, raspberry leaf may help with the muscular component of that discomfort, even though it isn’t changing your estrogen or progesterone levels. It’s a leaf tea, so standard steeping works, but steeping for 20 to 30 minutes rather than the typical 3 to 5 minutes pulls out significantly more of the active compounds.
How to Steep for Maximum Benefit
The way you prepare herbal tea dramatically affects how much of the active compounds end up in your cup. Leaf and flower teas (spearmint, green tea, raspberry leaf) should be steeped in just-boiled water for 20 to 30 minutes for medicinal strength, far longer than the 3 to 5 minutes on most tea bag instructions. For mineral-rich herbs like nettle, steeping 4 to 8 hours or overnight extracts the most calcium, magnesium, and iron.
Root teas (ashwagandha, dandelion, licorice) need a decoction: bring the root material to a boil, then reduce to a gentle simmer for 20 to 45 minutes. Simply pouring hot water over roots and letting them sit won’t break through the tough plant fibers enough to release the therapeutic compounds. Denser roots benefit from the full 45 minutes.
Safety Considerations
Herbal teas that affect hormones can also interact with hormonal medications. Chamomile, for example, may reduce the effectiveness of oral contraceptives based on preliminary research. St. John’s wort, sometimes blended into herbal tea mixes, has well-documented interactions with birth control pills, blood thinners, and several other medications.
Licorice root deserves special caution. It blocks the enzyme that converts active cortisol into its inactive form, effectively amplifying cortisol’s effects in your body. In small amounts this can support people with low cortisol, but regular use can raise blood pressure and disrupt potassium levels. Pregnancy is another consideration: several commonly used herbal teas, including ginseng and ginkgo, have raised safety concerns in animal studies for use during pregnancy. If you’re on thyroid medication, hormone replacement, or birth control, check for interactions before adding hormonal teas to your daily routine.
Consistency matters more than quantity with most of these teas. The clinical trials showing results with spearmint used daily intake over 30 days, and ashwagandha’s cortisol reduction was measured after 60 days. A single cup here and there is unlikely to produce hormonal shifts. One to two cups daily, prepared properly and maintained over several weeks, is the pattern most likely to produce noticeable changes.