don’t you dare apologize for being crazy.

don't you dare apologize for being crazy.

your science-backed *hormone-quenching* daily savior is coming soon.
A woman tearing open a Sync stick pack with her teeth, pink powder bursting out

all-in-one daily essential vitamins + hydration that sync to your cycle.

26+ functional vitamins, minerals and bioactiveselectrolytes organic australian sea salt

finally, a daily functional drink built for women. three phase-matched, evidence-based powders designed to drink in water. In one super-easy 28-day pack.

Sync stick pack

day 1–7menstrual

You're bleeding. You're losing iron. You're tired and nobody's checked your ferritin. This one puts back what your period takes.

  • extra iron to replenish what your period takes, dosed with dandelion leaf to keep things moving
  • vitamin c boost to help your body absorb it
  • extra magnesium, because iron can slow you down

+ female essentials basecoq10, b-complex, vitamin c, vitamin a, vitamin e, d3 + k2, active folate, iron, zinc, iodine and calcium

+ electrolytessodium, potassium, magnesium + trace minerals, with organic Australian sea salt. harvested from ancient lakes deep within the desert regions of western australia

Sync stick pack

day 8–21bridge

Your energy rises with estrogen, and your body is rebuilding after your period. This formula supports that output with B vitamins, antioxidants and the nutrients your body uses to repair.

  • extra b vitamins for energy
  • astaxanthin a antioxidant powerhouse
  • myo-inositol to support healthy ovulation

+ female essentials basecoq10, b-complex, vitamin c, vitamin a, vitamin e, d3 + k2, active folate, iron, zinc, iodine and calcium

+ electrolytessodium, potassium, magnesium + trace minerals, with organic Australian sea salt. harvested from ancient lakes deep within the desert regions of western australia

Sync stick pack

day 22–28luteal

The week before your period is when most women feel their cycle most: sleep, cramps, mood. This formula raises magnesium to support restful sleep and normal muscle function.

  • the most magnesium of the month for sleep and muscles
  • l-theanine + saffron for calm without drowsiness
  • calcium + magnesium for fewer 3pm chocolate emergencies

+ female essentials basecoq10, b-complex, vitamin c, vitamin a, vitamin e, d3 + k2, active folate, iron, zinc, iodine and calcium

+ electrolytessodium, potassium, magnesium + trace minerals, with organic Australian sea salt. harvested from ancient lakes deep within the desert regions of western australia

we mass produce when we hit 500 sign ups.

this button. right here.

if you're a man pls sign up to learn about your woman (bc all sex-ed taught you was how to put a condom on a banana)

kinda chic they used to want to sedate us.

400 bc

"hysteria." named after the womb, treated by removing healthy ovaries, and only deleted from psychiatry's diagnostic manual in 1980.

1950s–70s

her cycle wasn't examined, it was sedated. tranquilizers were sold to doctors for women's "tension," pms and pregnancy. one was marketed as "emotional aspirin."

1993

her cycle was called "too variable" to study, so women were left out of research. only in 1993 was including women in federally funded clinical trials written into us law.

2027

sync is the savior. we stopped asking her to calm down. we started asking what she needs.

sources: hippocrates via pmc4585318; battey's ovariotomy 1872–78, peitho; dsm-iii 1980; miltown 1955 and tranquilizer advertising, dig 2020 and mcgill office for science and society; fda 1977 guideline and nih orwh; e. cleghorn, time 2021; nih revitalization act, public law 103-43, 1993.

you bring the crazy.we bring the science.

Emma Rosenhain

Emma Rosenhain

founder & ceo

Sixteen years in brand building and product development. Decided to build Sync in a deep luteal insomniac episode.

Britt Lifsey

Britt Lifsey

co-founder & cfo

CPA, formerly at PwC and Maxwell Group, with a Master's in Accounting from UNC Kenan-Flagler. She built every number behind Sync.

Dr Mahino Talib, MD

Dr Mahino Talib, MD

ob/gyn

Board-certified OB/GYN and clinical associate professor based in NYC, specialising in endometriosis, PCOS and fibroids.

fyi we do not follow men or celebrities (except leslie mann).

@syncyourworld
© 2026 sync. not crazy. cyclical.