Swanson butterbur extract helps with migraine prevention and seasonal allergy comfort, from a science backed brand that’s stood the test since 1969, using capsules standardised to key petasins with PA-free safety. The main active ingredients petasins help modulate inflammatory mediators to ease headaches and nasal symptoms. This blend reflects Swanson’s long standing commitment to safety, purity and reliable sourcing.

Available Sizes & Variants:

60 capsules – a solid daily value for ongoing migraine and allergy support.

Benefits & Features:

• Helps prevent migraines with a standardised butterbur extract.
• Eases seasonal allergy symptoms by modulating inflammatory mediators via petasins.
• PA-free formulation keeps daily use safer.
• Each capsule gives a steady dose, with extraction and purification aiming at removing harmful alkaloids.
• Swanson’s commitment to safety and quality spans decades, with standardised extracts and clean processing that give you reliable support for headaches and congestion, while fitting neatly into broader wellness routines like digestive enzymes, berberine, or a vitamin d supplement.

Swanson’s butterbur extract is produced with careful extraction and purification to remove pyrrolizidine alkaloids, a safety emphasis the brand has championed since 1969. Each batch is standardised to guarantee 7 mg of petasins, delivering consistent potency across servings. The product line benefits from Swanson’s long standing science-backed approach and transparent messaging, helping customers feel confident in daily use for migraine and allergy support. The PA-free formulation reflects a meticulous commitment to purity, safety, and reliable quality that Swanson has built its reputation on.

Butterbur Root Extract (Petasites hybridus) standardized to 7 mg total petasins (petasin, isopetasin, S-petasin), Butterbur Root Extract (Petasites hybridus) standardized to 7 mg total petasins (petasin, isopetasin, S-petasin)

• GTIN: 87614141923
• Manufacturer: Swanson
• Categories: ButterburSwanson
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

As a dietary supplement, take one capsule twice daily with water. Store in a cool, dry place. Keep out of reach of children. Do not use if seal is broken. Not for use by pregnant or nursing women. Consult your doctor before use if you are taking medication or have a medical condition, especially liver disease.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Butterbur extract (Petasites hybridus) standardised Extract

Butterbur extract is an herbal remedy derived from the Petasites hybridus plant and used for its part in normal inflammatory mediator activity.

This form is standardised to key petasins and is certified free from pyrrolizidine alkaloids, supporting safety in herbal use.

What Does Butterbur Extract Do?

Butterbur extract helps to modulate inflammatory mediators and is involved in reducing leukotriene synthesis, supporting normal immune and respiratory function. Studies indicate benefits for migraine prevention and allergic rhinitis, with PA-free extraction [which ensures safety].

Dr. Diener of the University found that butterbur extract significantly reduced migraine attacks versus placebo, supporting its physiological actions within the nervous system.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Swanson Butterbur Extract sticks out to us because of its decades-long commitment to science-backed quality since 1969. The brand's method of standardising extracts and delivering steady petasin levels lines up with our focus on reliable potency and safety for daily wellness support (which is crucial). This credibility is reinforced by Swanson’s reputation for trusted quality and accessible, value driven supplements that emphasise strict safety standards. The product range is made PA-free, with careful extraction and purification practices that prioritise purity and safety for shoppers (for consumers). Our evaluation recognises Swanson as a partner that blends heritage with a clear focus on quality controls, which is central to why we chose them for this Butterbur range (which matters to us). This brand was evaluated by our expert team of doctors, nurses, and nutritionists for compliance with our quality certification process.