
Bachelor’s button, featherfew, Santa Maria, wild chamomile, wild quinine
Derived from the leaves of the plant, feverfew is used primarily to treat migraine headaches. Feverfew extracts possess antiprotozoal properties (2). Although much of its activity is attributed to a compound parthenolide, a parthenolide-free extract of feverfew demonstrated free radical-scavenging properties, affording protection against UV-induced sun damage (3).
In clinical trials a feverfew extract reduced the frequency of migraine attacks (1) and a feverfew/ginger formulation prevented mild headache before the onset of moderate to severe headache in patients with migraine (16).
Feverfew also exhibited anticancer effects in vitro (4) (5) (6) (17) (18). A Phase I clinical study involving cancer patients showed that up to 4 mg of parthenolide was well tolerated; however, parthenolide could not be detected in the plasma (7).
More studies are warranted.
The sesquiterpene lactones, particularly parthenolide, are the active ingredients and are responsible for feverfew's beneficial effects; parthenolide attenuates activation of the NF-kappa B complex to block transcription of inflammatory proteins (12). In glioblastoma cells, parthenolide induces caspase 3/7-mediated apoptosis independent of NF-kappa B suppression (13). It is believed that all the feverfew constituents have a synergistic effect in preventing migraines. Some researchers believe that the flavonol content also has anti-inflammatory effects (8) (9).
Parthenolide sensitizes the tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) leading to apoptosis via activation of both caspases 8 and 3 in hepatocellular carcinoma cells (18).
Individuals allergic to ragweed, chrysanthemums, marigolds, or other members of the Compositae family may have cross-sensitivity to feverfew.
Common: Minor gastrointestinal distress. Oral ulcerations may result from chewing fresh feverfew leaves. Cases of airborne contact dermatitis have also been reported (10).
Withdrawal symptoms: Muscle stiffness, anxiety, and moderate pain usually occur following cessation of long-term feverfew use (post-feverfew syndrome). (8)
Cytochrome P450 3A4 substrates: Feverfew inhibits CYP1A2/2C8/2C9/2C19/2D6 and 3A4, and can affect the intracellular concentration of drugs metabolized by these enzymes (15).
Diener HC, et al. Efficacy and safety of 6.25 mg t.i.d. feverfew CO2-extract (MIG-99) in migraine prevention - a randomized, double-blind, multicentre, placebo-controlled study. Cephalalgia 2005; 25:1031-1041.
One hundred and seventy patients with migraine were randomized to receive 6.25 mg feverfew CO2-extract or placebo three times a day for 16 weeks following a baseline period of 4 weeks. Results showed that the frequency of migraines decreased by 1.9 attacks in the treatment group and by 1.3 attacks in those on placebo from 4.79 attacks per month. This difference was found to be statistically significant. The feverfew extract was well tolerated with nonspecific adverse effects that were seen in the placebo group as well. Researchers conclude that feverfew is effective in reducing the frequency of migraine attacks in patients.
Bottom Line: Feverfew may benefit patients with migraine headaches.
One or more compounds found in feverfew are thought to prevent migraines. One such compound, parthenolide, was found to block the formation of inflammatory proteins in a recent laboratory study. A feverfew extract was shown to reduce the number of migraine attacks and also decrease the mild headache that occurs before a migraine attack.
Feverfew also showed anticancer effects in lab studies. Human studies are needed.
Migraine Prevention:
One hundred and seventy patients with migraine were randomized to receive 6.25 mg feverfew CO2-extract or placebo three times a day for 16 weeks following a baseline period of 4 weeks. Results showed that the frequency of migraines decreased by 1.9 attacks in the treatment group and by 1.3 attacks in those on placebo from 4.79 attacks per month. This difference was found to be statistically significant. The feverfew extract was well tolerated with nonspecific adverse effects that were seen in the placebo group as well. Researchers conclude that feverfew is effective in reducing the frequency of migraine attacks in patients.
If you are taking drugs that are substrates of Cytochrome P450 3A4 (Feverfew may increase the risk of side effects of these drugs).