Herbal Teas and Tinctures: Using Them Sensibly

HEALTH · GLOBAL

Herbal Teas and Tinctures: Using Them Sensibly

What herbs do, interactions, pregnancy and quality

Herbal preparations are pharmacologically active, which is both why they can help and why they are not automatically gentle.

Herbs are drugs at low doses

Many medicines originate in plants, and the compounds do not become harmless because they arrive in a tea. That is the correct starting point for using them well.

Effects vary with the species, the part of the plant, how it was extracted and how much you take. Tinctures are considerably more concentrated than infusions.

Where there is reasonable evidence

Peppermint oil for IBS symptoms, ginger for nausea, and chamomile and valerian for sleep with modest support. Most other traditional uses have limited human trial evidence rather than none.

Interactions are real

St John's wort affects a long list of medicines including contraceptives, antidepressants and anticoagulants, and can make them fail. Liquorice affects blood pressure and potassium. Many herbs affect clotting.

Tell your doctor and pharmacist everything you take, including anything described as natural or as a tea.

Pregnancy and breastfeeding

Many herbs are unsuitable, and safety data is largely absent because these are not trialled in pregnancy. Follow midwife or pharmacist advice rather than general guidance, and treat raspberry leaf and similar traditional preparations as requiring advice.

Children and pets

Doses are formulated for adults. Keep concentrated tinctures and essential oils well away from children and pets, since several are toxic to cats in particular.

Quality and labelling

Look for the Latin species name, the plant part used, the extract strength and a batch number. In the UK, traditional herbal registration marks products assessed for quality and safety.

Brewing and dosing

Cover an infusion while it steeps, since the volatile oils that carry much of the effect escape in the steam. Follow the stated steeping time rather than leaving it indefinitely.

Tinctures are measured in drops or millilitres for a reason. More is not better with concentrated preparations.

Storage

Keep dried herbs airtight, cool and dark, and expect them to lose potency within a year. Tinctures keep far longer.

Choosing a practitioner

Medical herbalists in the UK belong to voluntary registers with training requirements. Check the register, and expect any competent practitioner to ask about your medication and to work alongside your doctor rather than instead.

Be cautious of anyone advising you to stop prescribed treatment.

Sleep and stress

A consistent wake time, morning daylight, a cool dark bedroom, and caffeine stopped by early afternoon all have far stronger evidence than any herbal preparation.

Keep a note of what you take and for how long, which helps a doctor if anything changes.

Not a substitute

Delaying medical assessment for a symptom is where real harm happens. Use these alongside medical care rather than instead of it.

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