Key Benefits

• Reduces PMS symptoms naturally.

• Eases period cramps.

• Enhances mood and mental clarity.

• Drug-free and non-invasive relief.

• Works in just 20 minutes a day.

Nettle™ is a breakthrough neurotechnology headband that helps combat PMS symptoms and period pain using gentle brain stimulation. During the luteal phase, hormonal shifts disrupt the brain’s pain and emotion-regulating centres, leading to cramps, mood swings, irritability, and brain fog.

Nettle™ works by delivering precise electrical pulses to key areas of the brain. Two electrodes target the dorsolateral prefrontal cortex (DLPFC) to improve mood and reduce emotional distress, while two others stimulate the motor cortex (M1) and insula to alleviate pain. By mimicking the brain’s natural activity during the follicular phase, Nettle™ restores balance and clarity, helping you feel more in control.

Wear it for just 20 minutes a day to ease discomfort and regain focus throughout your cycle.

What’s Included:
-Nettle™ at-home brain stimulation headband and accessories.
-Dedicated support 7 days a week in-app and over email to get you started.
-3-month supply of refills (Electrode Covers and Salt Sachets).
-90-day money-back guarantee.
-1-year warranty.

Nettle™ is a breakthrough neurotechnology headband designed to relieve PMS symptoms and period pain without drugs or hormones. Using transcranial direct current stimulation (tDCS), a method backed by over 30 years of research, it delivers gentle pulses to the brain’s DLPFC and M1 regions, helping regulate mood and pain through neuroplasticity. Just 20 minutes a day during the luteal phase can significantly improve comfort and wellbeing.

In a placebo-controlled clinical trial, 77% of users reported significant pain relief, with an average 53% reduction in pain. 67% experienced improved mood with 34% fewer PMS symptoms, and 50% saw increased energy and mobility. Importantly, 44% of participants had PMDD, showing its effectiveness for severe cases.

Approved as a Class IIa medical device in the UK and EU, Nettle™ is safe, non-invasive, and free from severe side effects—offering a clinically proven, science-backed alternative to traditional treatments.

Samphire is a neurotechnology company dedicated to maximising women’s wellbeing during menstruation, postpartum recovery, and menopause. Co-founded by Emilė Radytė and Alex Cook, the brand is led by neuroscientists, engineers, and creatives on a mission to transform women’s health through groundbreaking wearable technology—providing scientifically validated devices that empower women to take control of their health.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

1. Place electrode covers over the electrodes.
2. Soak electrode covers in saline solution.
3. Place Nettle™ on your head, it should sit comfortably.
4. Connect with the Samphire App and start your 20-minute session.