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Drugs in development · updated 13 November 2026

Amino Acids: clinical trials and development status

Other names and codes: Aminosyn Ii 15% In Plastic Container

FDA verified identityApproved in the US (FDA)Authorised in the EU (EMA) since 28 July 2025

As of 13 November 2026 Amino Acids is in 3 active clinical trials (recruiting or ongoing, phases I–III) for 3 diseases. The most advanced phase is II.

Authorisation

Sources: EMA, AIFA register (open data), FDA. For Germany only the EU centralised authorisation is shown: the national BfArM register is not one of our sources.

Where Amino Acids trials are recruiting

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3Active trials
IIMost advanced phase
3Diseases studied

What it is and what it is used for

Maapliv is a medicine used to treat an acute decompensation episode (sudden worsening) of maple syrup urine disease. Maple syrup urine disease is an inherited disorder in which the body is unable to break down certain building blocks of protein known as branched-chain amino acids (BCAAs), including leucine, isoleucine and valine. As a result, these amino acids build up in the body, including in the brain, where leucine in particular can lead to brain damage. Maapliv is for use in patients who cannot receive BCAA-free amino acids by mouth or via a feeding tube. Maple syrup urine disease is rare, and Maapliv was designated an ‘orphan medicine’ (a medicine used in rare diseases) on 26 October 2018. Further information on the orphan designation can be found on the EMA website. Maapliv contains the following amino acids as active substance: L-alanine, L-arginine, L-aspartic acid, L-cysteine hydrochloride monodhydrate, L-glutamic acid, glycine, L-histidine, L-lysine monohydrate, L-methionine, L-phenylalanine, L-proline, L-serine, taurine, L-threonine, L-tryptophan, L-tyrosine.

Source: EMA, medicine overview (EPAR summary for the public) of Maapliv, EMA update of 30 September 2025

How it works

Maapliv consists of a solution of amino acids, but with no BCAAs. When Maapliv is given to the patient, the body uses the amino acids to make proteins, together with the excess BCAAs that have built up because of the sudden disease worsening. This lowers the level of BCAAs in the body, thereby reducing their toxic effect.

Source: EMA, medicine overview (EPAR summary for the public) of Maapliv, EMA update of 30 September 2025

Official documents

Use, doses, side effects and interactions: only these official documents are authoritative.

Diseases studied

For each disease: the drug’s most advanced phase and active trials, with the reference trial on ClinicalTrials.gov.

DiseaseMost advanced phaseActive trialsReference trial
Acute kidney injuryII1NCT07001098
Hepatocellular carcinomaII1NCT07412054
XerostomiaI–II1NCT07309588

Sites in Europe

1 site of the active trials in Poland.

Sites declared by the sponsors on ClinicalTrials.gov; region worked out by Phuturdex from the geographic point. The list of sites with city and recruitment status is in the app. See the sites →

Everything on Amino Acids

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Source: Phuturdex analysis of ClinicalTrials.gov (U.S. National Library of Medicine), FDA and EMA data, updated 13 November 2026. Active trials = recruiting or ongoing, phases I–III. Diseases are those named by each trial (NLM MeSH terms). The estimated launch, when shown, refers to the United States and is a Phuturdex calculation described on the Method page, not official data: the drug may already be marketed in other countries.

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