We aim to revolutionize global health by empowering women to optimize their own health and microbiome, therefore enhancing their chances of conceiving and nurturing healthy babies.

We truly believe that by helping women who are looking to conceive, are already pregnant or have just had a baby is the best way to integrate a microbiome first approach throughout the whole family.

Dr. Erika Tajra
Founder and CEO, Rejuven

Why we started Rejuven

Creating and building Rejuven has been a deeply personal journey that started from an experience that we never want women to go through. Since then it has become our mission to empower women around the world to take control of their own health.

September 2020

Erika gets pregnant for the first time at 39 but ends up having a miscarriage after getting ill from COVID. She starts researching how she can recover and optimize her health to try again as soon as possible but also make sure it's a healthy pregnancy.

January 2021

Erika develops a protocol for her and her husband based on their specific biology (genomics, microbiome, biomarkers). The protocol involves prebiotics, probiotics, supplements and changes to both their diets, lifestyle and environmental elements in their home.

July 2021

After 6 months on the protocol, Erika decides they're healthy enough to try again. She ends up pregnant during her first ovulation cycle (at 40 years of age). She now starts adding elements to her protocol to optimize the health of her baby in the womb.

During this time Erika also starts advising other female clinicians on fertility and health issues.

May 2022

Erika has her beautiful baby girl on her exact due date and after a pregnancy with no complications, no nausea and little to no swelling or inflammation. She now starts adding elements to her protocol to make sure that her baby is getting the right elements for a healthy microbiome through her breastmilk.

July 2022

A female clinician Erika was advising, who had previously had 22 miscarriages despite all forms of fertility treatment, finally has a healthy baby boy.

Other women Erika is advising are seeing success from the protocol.

December 2023

After years of advising women one to one on fertility and longevity based on their genotypes, Erika develops a genotype specific protocol for pre-pregnancy, during pregnancy and postpartum.

Rejuven is born.

Meet the team

Our philosophy is simple — hire a team of diverse, passionate people who believe in our mission and foster a culture that empowers them to do their best work.

If that sounds like you, check out our open positions!
Open positions
Dr. Erika Tajra
Chief Executive Officer
Erika is a Medical Doctor with a Masters in Personalized Medicine and Genomics from UCL Great Ormond St and a Diploma in Global Health Delivery from Harvard University. She is also a Guest Lecturer at UCL Great Ormond St and Oxford University.
Sean Fee
Chief Operating Officer
Sean has over 15 years experience in Digital Media and Technology startups and businesses. He's built and scaled businesses to millions of users with a strong focus on content, education and community. He originally started his career in investment banking.
Karina Halfen
Chief Marketing Officer
Karina has over 10 years experience across product marketing, user acquisition and management consulting. She has worked with both startups and large multinationals and is particularly passionate about platforms that help to build strong communities.
Margareth Lucas
Membership Services Lead
Margareth has over 5 years experience in customer service, sales, event organisation and VIP membership relations. Most recently she has worked for high end clients across Europe and the Middle East as a personal lifestyle advisor.
Dr. Emily D'Adamo
Advisor
Physician at the Center for Generative Medicine. Graduated summa cum laude from the University of Bridgeport with a Doctorate in Naturopathic Medicine where she won the Excellence in Clinic award.
Dr. Mark Kristiansen
Advisor
Founder and Director of the Global Academy of Personalised Medicine and Genomics. Head of the UCL Genomics Lab and Director of the MSc in Personalised Medicine and Novel Therapies at UCL Great Ormond St.
Dr. Christian Roghi
Advisor
Over 20 years experience in healthcare and health tech companies including 8+ years working on microbiome specific products. Director of Microbiome Solutions at Eagle Genomics and PhD in Molecular Cell Biology.
You?
Check our open positions
We're always excited to work with smart, passionate and driven people who are uniquely motivated to work on products that help people live longer, healthier and happier lives. If that sounds like you reach out!
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