Understanding the Effects of Hibiscus Tea
Hibiscus tea is a vibrant, crimson-colored beverage brewed from the dried calyces of the hibiscus flower, Hibiscus sabdariffa. Historically consumed in various cultures for its refreshing taste and medicinal properties, modern research has confirmed many of its benefits, such as its antioxidant content and potential to lower blood pressure. However, these powerful properties can also trigger unexpected reactions in some people.
Blood Pressure and Dizziness
One of the most well-documented effects of hibiscus tea is its ability to lower blood pressure. The tea acts as a natural diuretic and contains compounds that behave similarly to ACE inhibitors, a class of prescription drugs for hypertension. For individuals with high blood pressure, this can be a beneficial effect. However, if you already have low blood pressure (hypotension) or are taking medication to lower it, this effect can be compounded, leading to symptoms like dizziness, lightheadedness, or fatigue. The "weird" feeling you experience might be a drop in blood pressure that your body isn't accustomed to.
Digestive Discomfort
Another common cause of an unusual feeling after consumption is gastrointestinal distress. Hibiscus tea is known for its tart, cranberry-like flavor, which is due to its high acidity. For people with sensitive stomachs, excessive consumption can lead to an upset stomach, gas, bloating, or even mild nausea. Starting with a small amount can help determine your personal tolerance level for this acidic beverage.
Allergic Reactions
Although rare, an allergic reaction to hibiscus is a possibility. Hibiscus is a member of the Malvaceae family, which also includes plants like cotton and okra. If you have a known allergy to other plants in this family, you may also be sensitive to hibiscus. Symptoms can range from mild skin irritations like hives to more severe reactions such as difficulty breathing or swelling of the face, throat, or tongue. It's crucial to seek medical attention immediately if you suspect a serious allergic reaction.
Medication Interactions
One of the most important considerations is how hibiscus tea can interact with certain medications. The potent compounds in the tea can alter the effectiveness of various prescription drugs. This is especially true for blood pressure and diabetes medications, as the tea can lower both blood pressure and blood sugar levels, potentially causing them to drop too low when combined with medication. Additionally, hibiscus can affect the metabolism and absorption of other drugs, such as acetaminophen (Tylenol), chloroquine (an anti-malaria drug), and some cholesterol medications like simvastatin (Zocor). If you take any of these medications, consulting a healthcare provider before consuming hibiscus tea is essential.
Phytoestrogens and Hormonal Effects
Hibiscus tea contains phytoestrogens, naturally occurring plant compounds that mimic estrogen in the body. While research on this topic is ongoing, some individuals, particularly women, may be sensitive to these hormonal effects, leading to menstrual irregularities or other hormonal changes. This is also why hibiscus is contraindicated for pregnant women, as it could potentially increase blood flow to the uterus and affect hormone levels.
Comparison of Hibiscus Tea's Potential Side Effects
| Side Effect | Cause | Symptoms | Who is at risk? |
|---|---|---|---|
| Dizziness | Lowered blood pressure | Lightheadedness, fatigue, fainting | Those with pre-existing low blood pressure or on blood pressure medication |
| Upset Stomach | High acidity | Bloating, gas, nausea | Individuals with sensitive stomachs or acid reflux |
| Allergic Reaction | Sensitivity to hibiscus | Hives, swelling, difficulty breathing | People with allergies to other Malvaceae family plants |
| Drug Interaction | Altered drug metabolism | Hypoglycemia (low blood sugar), reduced drug efficacy | Those taking medications for blood pressure, diabetes, cholesterol, or chloroquine |
| Hormonal Effects | Phytoestrogens | Menstrual irregularities, hormonal changes | Women, especially pregnant or breastfeeding individuals |
Moderation and Proper Preparation
The amount of hibiscus tea you consume can significantly impact whether you experience side effects. Excessive intake is more likely to trigger issues. The concentration of the brew also matters; steeping for too long can release bitter tannins and intensify the tea's effects. Many sources recommend no more than a quart a day for adults, and it's best to start with a smaller quantity to see how your body reacts. Proper preparation involves steeping for about 5-10 minutes and avoiding over-steeping to prevent bitterness.
Conclusion
Feeling "weird" after drinking hibiscus tea is not uncommon and can be attributed to several factors. The tea's potent effects on blood pressure and blood sugar, its acidic nature, and potential interactions with medications are all possible culprits. For most healthy individuals, moderate consumption is likely safe and beneficial. However, if you have a pre-existing medical condition, are pregnant, or take certain medications, it is crucial to speak with a healthcare professional before making hibiscus tea a regular part of your routine. Always listen to your body, start with small amounts, and discontinue use if adverse symptoms persist. Learn more about the various health properties of hibiscus from Verywell Health.
