From above: a grandfather kneeling on a wooden floor with his hand open, and a baby crawling toward itC-H12400 × 1350 · the open hand, from above

Benign Bio-Synthesis

Medicine on the body's terms.

Developing animal-free medicines from PDRN, the building blocks the body already uses, to help people live healthier, more comfortable lives.

We are Synthena.

Advanced medicine that fits into a life rather than interrupting it.

We develop medicines from one animal-free substance, PDRN, made and studied to pharmaceutical grade, to take on the conditions that place a daily strain on people, their families and the clinicians who care for them. Synthena Pharmaceuticals Limited is based in Hong Kong.

Guided by the experiences of the people who live with these conditions, we are determined to make medicines the body naturally accepts, so that a medicine asks as little of a person as possible.

Marshon Nguyen, Chief Executive Officer of Synthena
“My grandparents opened their door to anyone who knocked, cared for them, and never asked what they would get back. That is the only care I have ever trusted. I founded Synthena to make medicine the same way: with the care you would want for your own family, gentle by design, and given without asking anything back.”

Marshon Nguyen, Founder and Chief Executive Officer

Three colleagues at a bright laboratory window, seen from behind, one holding a flask of pale amber liquid up to the light on an open palmC-A11600 × 1200 · the makers, flask to the light

Medicine and the body need not be adversaries.

How it works

Everything we make is built to be naturally accepted by the body.

Four pillars carry every candidate from source to formulation, so that what reaches a person is as pure and as gentle as we can make it.

A woman's bare hands holding a clear dish with an amber culture up to the window lightC-M11500 × 1000 · flask and leaf
Source

Biocompatible purity

We bypass animal-origin materials entirely. Our PDRN comes from plant and microbial sources, extracted, purified and cut to length by our own process.

A man's hands placing a row of small vials of pale amber liquid on a white light panelC-M21500 × 1000 · vials on the light panel
Refine

Molecular precision

We refine the substance to a consistent, pharmaceutical-grade standard, built for purity and for everyday use.

A scientist with his glasses pushed up, absorbed in a microscope in a white laboratoryC-M31500 × 1000 · cream on the slab
Formulate

Targeted integration

We formulate each medicine for the tissue it is meant to reach, from the deep layers of the skin to the tissues inside the body.

A scientist at a white bench reading pale blue cell images on a monitorC-M41500 × 1000 · the patch test
Design

Gentle by design

We design every candidate for tolerability from the start, not as an afterthought.

Our platform

Every candidate we develop begins on one platform, made pure from the start.

Everything we make starts from one substance, PDRN. Here is what it is, how we make it, what it does, and why it is designed to be gentle.

One luminous strand of beads, PDRN, curling inside a translucent sphere against deep blueC-P11400 × 1400 · the matrix, macro
A scientist lifting a flask of pale amber liquid toward a bright window beside a colleague, a row of flasks on the white benchC-P21400 × 1400 · the synthesis, culture flasks
Bright threads knitting the torn edge of an ivory sheet against deep blueC-P31400 × 1400 · the tissue it reaches
A woman with silver hair in a terracotta cardigan by a window, one hand open on her knee, the other holding a white cup of teaC-P41400 × 1400 · a hand at rest

PDRN, the building blocks that cells already use

PDRN, polydeoxyribonucleotide, is a mixture of short DNA fragments: chains of the same four nucleotides that every cell in the body already uses to build and repair itself.

Our platform is PDRN made to pharmaceutical grade, consistent from one batch to the next, and cut short by design: fragments of 20 to 80 base pairs, about 13 to 50 kilodaltons. Everything we develop is built on it.

Supply

PDRN gives cells under stress ready-made nucleotides, so they can rebuild and divide without starting from scratch.

Signal

It signals through a receptor, adenosine A2A, that is understood to calm inflammation and encourage small new blood vessels to form.

Repair

The result is studied in the repair of the skin, the joints, the lining of the gut, the nerves and the blood vessels.

A rider in a rust-orange jersey on a road bicycle, hand on the bar with a smartwatch, on a pale roadC-FI2000 × 1333 · the cyclist, hand and knee
Our approach

Developing medicines for the conditions people live with every day.

Our research focuses on developing medicines for people living with conditions of the heart and blood vessels, the joints, the gut, the nerves and the skin, across five areas of focus. Dermatology is our most advanced programme.

Explore the five areas
Areas of focus

Discover our areas of focus.

We are developing medicines across five areas, with dermatology as our most advanced programme. Each one starts with the people who live with the condition.

Our programmes
A pharmacist handing a plain white box across a counter to an older man whose hand is open to receive itC-S11600 × 1200 · the handover, palm open
Science and delivery

Bringing gentle science to the people who need it.

Discover how Synthena turns one substance, PDRN, into medicines held to pharmaceutical standards.

We work with a university research partner on the chemistry and the biology of our substance, and with clinicians and partners to bring our medicines to the people who need them.

A family of three generations at a long lunch table under trees, passing dishes and laughingC-MB12520 × 1080 · the lunch table
Our job

Our job is to make medicine the body can live with.

We are starting with dermatology, and we know our most important work is still ahead of us.

Shape the future of medicine with us.

We welcome partners, clinicians, researchers and investors who share our purpose. If you live with one of the conditions we work on, you are welcome to write to us too, and to talk to your doctor about your care.