Begin with what is actually in the blend

The same familiar name can hide very different formulas. A lemongrass infusion may contain only stalks, while a flower blend may use caffeinated green tea as its base. Concentrated ginger supplements are different again from ginger steeped in water.

Read beyond the ingredient pictured on the front of the packet. A blue blend may contain both butterfly-pea flowers and caffeinated green tea, while a product named after one herb may contain several others. The full list gives you a much clearer picture of the drink.

The amount matters too. A pinch of spice in a drink is very different from a concentrated extract. If your tea and your supplements contain the same herb, mention both when asking a pharmacist whether they are suitable for you.

Digestive effects: ginger, peppermint and senna

Ginger can cause heartburn, abdominal discomfort or diarrhoea in some people, particularly with stronger oral preparations. NCCIH’s ginger information describes these effects. If a spicy infusion irritates your stomach, a milder cup or a different ingredient may suit you better.

Peppermint can aggravate reflux, so it may be a poor choice when the main symptom is heartburn. Peppermint oil also differs from a leaf infusion in both concentration and use.

Senna stimulates the bowel and can cause cramps or diarrhoea. NHS guidance treats it as a short-term constipation medicine. Follow the preparation and daily-use instructions for the particular product, even when it is packaged as tea, and seek advice if you repeatedly need it.

Check slimming or “cleansing” blends for senna and other laxative ingredients. Frequent loose stools can cause problems and are not evidence of losing body fat. If that happens, stop using the product and seek advice if the symptoms persist or are more than mild.

Caffeine can be easy to overlook

Black and green tea contain caffeine, including when combined with herbs or flowers. Pure butterfly-pea, pandan or lemongrass infusions do not contain tea leaf, but a named commercial blend may. “Herbal flavour” is not the same as caffeine-free.

Too much caffeine can disturb sleep or cause jitters, palpitations and stomach upset. The FDA’s caffeine guidance notes that sensitivity varies. Count all the caffeine you have during the day, including coffee, energy drinks and supplements. One cup may seem modest until it is added to everything else.

If evening tea affects your sleep, move the caffeinated drink earlier or choose a pure caffeine-free infusion. A smaller serving can also reduce intake. Adding milk changes taste and texture but does not remove caffeine already present in the tea base.

Licorice and medicine interactions

Licorice contains glycyrrhizin, a compound that can affect blood pressure and potassium levels. NCCIH’s licorice information describes greater concern with prolonged use and for people with high blood pressure or certain heart or kidney conditions.

If you have one of those conditions, check before choosing a licorice-containing blend. The amount and how often you drink it matter, but a low-looking percentage on a multi-herb label is not enough to decide suitability. A pharmacist can consider it alongside your medicines.

Take a photo of the complete ingredient panel when asking a pharmacist about interactions. Include the name and strength of your regular medicines and any supplements. That gives them something specific to assess, especially when the product contains several herbs with unfamiliar names.

Tapee Tea’s published blend includes licorice. Our ingredient guide lists the full formula. There is also a separate Tapee safety guide, which explains the FDA warning about undeclared medicines and the available Sirilife laboratory reports.

Allergies, pregnancy and concentrated extracts

Avoid any blend containing an ingredient you know you are allergic to. With multi-herb products, read the complete list rather than relying on the main ingredient named on the front.

Take extra care with medicinal herbs and concentrated supplements during pregnancy or breastfeeding. Safety information is limited for many products, and some ingredients should be avoided. Using a herb in cooking does not prove that a concentrated dose of the same plant is suitable.

Some concentrated turmeric supplements, including products designed for increased absorption, have been linked to liver injury. LiverTox describes these cases. They concern supplement preparations, not simply turmeric used as a kitchen spice. Check which preparation you are considering before applying the advice to your drink.

If you have a health condition or take regular medicines, use the complete ingredient panel and serving directions when asking whether a particular blend suits you.

If a drink does not agree with you

Stop the drink if it causes a new troublesome reaction. For mild, short-lived stomach discomfort, avoid repeating the same preparation while you assess what happened. Seek advice if symptoms persist, recur or are more than mild.

Trouble breathing, swelling of the lips or tongue, faintness or a rapidly developing severe reaction requires urgent help. Yellowing skin or eyes, dark urine or severe persistent abdominal symptoms also warrant medical assessment, especially after starting a supplement.

For ordinary tea shopping, choose a blend whose ingredients and caffeine content suit you. Our Thai tea collection offers different styles of drink; the most enjoyable choice is one that fits both your flavour preferences and your relevant needs.