30% of this week's sales donated to the Black Women's Health Imperative

Healthier, happier periods

Plant-based pain relief delivered to your door.

Shop now

Better periods are just a click away

Semaine is your period vitamin: formulated with 9 super-powered plant extracts and minerals that lower the inflammation in your body when you need it the most. Best of all, it arrives right to your door exactly when you need it. 

Get started with Semaine

It's as easy as 1, 2, 3.

Start here

What Semaine Users Are Saying

I'm in the middle of taking Semaine and I see a BIG difference in how I feel. Last month I was tortured by cramps, and this month is SO much better!

Kaitlyn, Atlanta GA

I've had a few cramps here and there, but overall Semaine has been a miracle and I'm going to order more right now so I'm ready for next month!

Lauren, Salem MO

I always want to take ibuprofen or Aleve but know they will never help, so I never do – but Semaine did!

Diane, NYC

I had energy all day – felt refreshed compared to feeling sluggish and irritable all day. Plus my cycle was shorter!

Christina, Atlanta GA

I don't dread starting my period again after my second pregnancy this summer because I know I'll be able to take Semaine to manage the pain and discomfort.

Lena, Detroit MI

The thing I've noticed most is my energy level. I've had so much energy for all my work and was literally dancing in my office!

Liz, Atlanta GA

Finally an all natural supplement that addresses inflammation on your period

Tina, Seattle WA

Shifting the paradigm in women's healthcare for the better

Jordan, Seattle WA

Pain killers are too hard on my stomach and liver. I wanted something I could take that both lessened my period pain but also holistically supported my body.

Lauren, Semaine CEO Seattle

Your most powerful period tool

• Lessens pain naturally

• Decreases bloating

• Supports your body’s ability to heal

• 100% plant-based and vegan

• Just for the week of your period

Shop now

Our 9 essential ingredients

Every ingredient we put in Semaine has been rigorously researched and sourced. Semaine isn’t just soy-free, hormone-free, plant-based, and non-addictive—it is also maximally absorbed by your body. Semaine’s clinically studied ingredients have been shown to help reduce period pain, prevent bloating, reduce stress, and help you sleep better.

Our ingredients

The science behind Semaine

We believe in wellness, and we also believe in the power of science to help us have our healthiest periods. Semaine was formulated by a research scientist with a passion for understanding inflammation at a molecular level. Pain is personal and complex. Semaine’s formulation is backed by in-depth research that recognizes that.

Want to geek out about period science with us? Head over to our blog where the Phd’s and doctors behind Semaine post about what’s happening to your body on your period.

Period science

Personal Stories

View all