The back-garden pharmacy

Feverfew (Tanacetum parthenium)

What is it? A perennial bushy plant with aromatic flowers.

How does it help? As a general tonic, and for relief from migraines and neuralgia.

How do I use it? Infuse 25g of herbs in half a litre of boiling water, cool and take frequently in doses of half a teacup. Don't use if pregnant.

Other benefits? It's a mild sedative and is thought to regulate menstrual flow.

What's the evidence? ‘This herb has been shown to reduce the symptoms of migraine in clinical trials,' says Dr Walker. ‘In France it has been used to alleviate painful periods. No doubt its strong anti-inflammatory properties contribute to these effects.'

Quick fix? Try MedicHerb's MigraHerb (£7.99, 30 tablets), the only feverfew medicine in the UK licensed by the Medicines and Healthcare products Regulatory Agency (MHRA). Available from www.medicherb.co.uk and larger Boots.