How Can I Access Trientine in China if Penicillamine Makes Me Sick?

Last reviewed: 22 June 2026.

If penicillamine is causing intolerable side effects and you are living in China, this page has good news that older information misses. The widely repeated claim that “trientine is not registered in China, so there is nothing you can do” is no longer true. Trientine is now approved in China, China has its own established copper chelators that foreign guidelines rarely mention, and there are legal channels to obtain imported trientine where it is not yet stocked locally. This page explains your realistic options and how to approach your doctor.

The headline: in China, you are not limited to penicillamine

Two facts have changed the picture:

First, trientine is now registered in China. The tetrahydrochloride film-coated tablet (Orphalan) received National Medical Products Administration (NMPA) approval in January 2023, and a domestically made trientine hydrochloride capsule was approved in 2024 — both for Wilson disease patients aged five and older who cannot tolerate penicillamine.¹ In major cities this means a specialist can document your case and write a prescription that you fill at a pharmacy, through ordinary channels — a genuine change from the situation only a few years ago.

Second, China has its own copper chelators, used for decades and written into the national treatment guidelines, that international (English-language) resources rarely discuss.²

Why switching matters if penicillamine is causing problems

Penicillamine is a copper chelator used for Wilson disease since the 1960s. It works, but its side-effect profile is significant: early neurological worsening, autoimmune reactions, kidney damage, blood-count changes, and skin problems occur in a meaningful proportion of patients.³ Neurological worsening after starting penicillamine is particularly distressing — it affects roughly 10–50% of patients with neurological Wilson disease who begin the drug, and in a subset the worsening is not fully reversible.⁴

Trientine is also a copper chelator, but with a different molecular structure and a substantially better tolerability profile. Multiple studies show that patients who could not tolerate penicillamine do well when switched to trientine, with effective copper mobilisation and fewer systemic side effects.⁵ It is the first-line recommendation in the AASLD 2022 Practice Guidance and the EASL 2012 guidelines for patients intolerant to penicillamine.⁶

China’s own copper chelators

These options are part of standard Chinese practice and appear in the Chinese Wilson disease guidelines, but are easy to miss if you only read English sources.²

Dimercaptosuccinic acid (DMSA, 二巯丁二酸) — oral. DMSA is a broad-spectrum heavy-metal chelator developed in China. It is taken by mouth and is convenient to use. Its copper-removing power is somewhat gentler than penicillamine, but it has one distinctive advantage: it is lipid-soluble and can cross the blood–brain barrier, which makes it particularly useful for patients with neurological or psychiatric symptoms. It has a long track record of efficacy and safety in China and is one of the core drugs used there.²

Sodium dimercaptopropanesulfonate (DMPS, 二巯丙磺酸钠) — injectable. DMPS is a powerful injectable chelator, normally used during a hospital admission. Its copper-excreting capacity is strong — urinary copper output rises markedly after treatment, and most patients improve. Because it is given by injection and is potent, it is generally reserved for more severe disease or for stages where rapid copper removal is needed, under inpatient medical supervision.²

Zinc (锌剂) — maintenance. Zinc does not remove copper; it blocks the intestine from absorbing it. It has mild side effects and is widely used for long-term maintenance, in pre-symptomatic patients, and during pregnancy. A common path is to use a chelator first to remove excess copper, then zinc for long-term maintenance.⁶

What is available inside China now

Option	Availability in China	Notes
D-Penicillamine	Registered and widely available	First-line in most Chinese centres
DMSA (二巯丁二酸), oral	Registered; domestically developed	Crosses the blood–brain barrier; useful for neurological symptoms
DMPS (二巯丙磺酸钠), injectable	Used in hospital	Strong copper excretion; for severe disease or rapid de-coppering
Zinc (acetate / gluconate)	Available; some brands registered	Maintenance or milder disease; lower copper-depleting effect than chelators
Trientine, oral	NMPA-registered (tetrahydrochloride tablet since 2023; domestic hydrochloride capsule since 2024) for penicillamine-intolerant patients ≥5 years	A specialist can prescribe it for you to fill at a pharmacy; a lower-cost generic dihydrochloride is also reachable via licensed online pharmacies

How to obtain trientine in China

Access is more straightforward than older guidance suggests. There are three practical routes.

1. Registered trientine, by ordinary prescription

Trientine tetrahydrochloride tablets have been NMPA-registered since 2023, and a domestic trientine hydrochloride capsule since 2024, both for penicillamine-intolerant Wilson disease patients aged five and older.¹ In everyday practice this is simple: a specialist documents your case, explains how to take it, and writes a prescription, which you then fill at a pharmacy. It needs no special import zone. Specialists at major centres — including in Beijing, Shanghai, Guangzhou and Hangzhou — now prescribe it routinely, and centres treating Wilson disease already have patients using it. Wilson disease has been on China’s First List of Rare Diseases since 2018, and access is expected to keep improving.¹

2. Generic trientine dihydrochloride, at lower cost

A cheaper option is the generic trientine dihydrochloride, commonly the version made in India. The two salt forms are pharmacologically equivalent: the tetrahydrochloride is simply a more storage-stable form of the same molecule, and no difference in safety or efficacy has been observed between them.⁹ Patients commonly obtain the generic through licensed online pharmacies such as JD Health (京东大药房): you get a prescription from a clinician, upload it for the platform’s pharmacist to review, and then purchase. This route is often cheaper and reaches more people — but, as with any chelator, the decision to start it should be made together with a specialist.

3. If a specific imported product is still not stocked locally

If an imported product you need is not yet available where you live, China has two legal channels that let designated hospitals use overseas drugs not yet registered nationwide:

• The Boao Lecheng International Medical Tourism Pilot Zone (Hainan). Qualifying designated hospitals may legally use imported drugs not yet fully registered on the mainland; after a physician’s assessment, patients may take a reasonable personal supply away with them.⁷

• The Greater Bay Area “Hong Kong-Macao drug access” channel (港澳药械通). Approved designated hospitals may use clinically-urgent imported drugs already in use in Hong Kong and Macao public hospitals.⁸

Both work through a designated hospital, on a physician’s application, with provincial approval. With domestic trientine now registered, most patients no longer need this route, but it remains available.

Zinc as a bridge or long-term alternative

If obtaining trientine takes time, zinc supplementation (as zinc acetate or zinc sulfate) is a clinically meaningful option for patients who cannot tolerate penicillamine. Zinc works by blocking intestinal copper absorption — it is less powerful at removing copper quickly than a chelator, but it is effective for maintenance and for milder copper accumulation.⁶ In China zinc preparations are widely available, inexpensive, and require no import process. The limitation is that zinc alone may be insufficient for patients with significant copper overload or active liver disease, where faster copper removal is needed. Your physician can guide whether zinc alone, or zinc while arranging trientine, fits your situation.

See medications-overview for a general comparison of Wilson disease treatments, and what-to-tell-doctor for how to frame this conversation with your physician.

What to say to your specialist

When you see your doctor, consider asking directly:

• “I cannot tolerate penicillamine. Can you prescribe the trientine that is now registered in China, so I can fill it at a pharmacy?”
• “Is the generic trientine dihydrochloride a reasonable lower-cost option for me, and can you write a prescription I can use through a licensed online pharmacy?”
• “If not, can we use DMSA or DMPS instead — and is DMSA preferable given my neurological symptoms?”
• “Is zinc an appropriate short-term option while we arrange a chelator?”
• “If a specific imported product isn’t stocked here, can we explore the Boao Lecheng zone or the Greater Bay Area drug-access channel?”

A specialist at a major Wilson disease centre is most likely to know what is feasible in the current regulatory environment. If you are not already at such a centre, a referral is worth pursuing.

This information is for educational purposes only and is not legal or medical advice. Drug-registration status and import policies change; please verify the current situation with your physician.

References