Everything you want to know.
Picked from the questions we get most. If yours isn't here, send us a message and we'll reply.
How long until I feel a difference?
Most customers notice changes within their first cycle. Full hormone support builds with three months of daily use. That timeline matches the clinical research on chasteberry, our primary ingredient.
What does it taste like?
Two flavours. Cinnamon is warm and spiced, sits well with milk or a splash of oat. Strawberry is light and tart, drinks well on its own. Neither is sweet. Neither tastes like medicine.
Can I take it on hormonal birth control?
Chasteberry can affect how some hormonal contraceptives work. If you're on the pill, the implant, or any hormone based birth control, speak to your GP before starting Happy Flow.
When in my cycle should I drink it?
Every day. Consistency is what makes the formula work. One scoop in the morning is what most of our customers do.
Is it safe for pregnancy or breastfeeding?
No. Chasteberry and cramp bark are not recommended during pregnancy or while breastfeeding. Stop use if you become pregnant.
What's in the formula?
Four ingredients. Chasteberry (Vitex agnus-castus), Evening Primrose Oil, Ginger Root, and Cramp Bark (Viburnum opulus). Plus your flavour. Nothing else. No fillers, no synthetic hormones, no binders.
How does Subscribe and Save work?
You get 20% off every order. Free UK shipping. We send it every 30 days. Pause, skip, or cancel any time from your account. No exit fees.
Where do you ship and how long does it take?
UK shipping is free over £40. Orders placed before 2pm ship the same working day. Standard delivery is 2 to 3 working days. We ship to the EU and US too, with timings shown at checkout.
What if it doesn't work for me?
You get 30 days to try it. If your first bag doesn't deliver, email us. We refund you in full. No questions, no return.
Where are the clinical studies?
Linked under each ingredient on the product page. We use peer reviewed sources only. PubMed, the Endocrine Society, and the National Institutes of Health.