science

List of investigational restless legs syndrome drugs

List of investigational restless legs syndrome drugs is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand List of investigational restless legs syndrome drugs rather than just read about it. In short: This is a list of investigational restless legs syndrome drugs, or drugs that are currently under development for clinical use for the treatment of restless legs syndrome (RLS) but are not yet approved. Chemical/generic names are listed first, with developmental code names, synonyms, and brand names in parentheses.

Key takeaways

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Reference excerpt

This is a list of investigational restless legs syndrome drugs, or drugs that are currently under development for clinical use for the treatment of restless legs syndrome (RLS) but are not yet approved. Chemical/generic names are listed first, with developmental code names, synonyms, and brand names in parentheses. The format of list items is "Name (Synonyms) – Mechanism of Action [Reference]". This list was last comprehensively updated in September 2025. It is likely to become outdated with time.

Under development

Phase 3 Ferric carboxymaltose (Ferinject; Injectafer; Iron-dextri-maltose; Iroprem; Renegy; VIT-45; Z-213) – iron replacement [1]

Phase 2 BP-14979 (BP-1.4979) – dopamine D3 receptor partial agonist [2] Ropinirole transdermal (Haruropi Tape; HP-3000) – dopamine D2-like receptor agonist [3]

Preclinical ATH-399A (DWP-307399; HL-192) – nuclear receptor subfamily 4 group A member 2 (NR4A2) agonist [4]

Not under development

Suspended Aplindore (DAB-452; Palindore; SLS-006; WAY-DAB-452) – dopamine D2-like receptor agonist [5]

No development reported NLS-2 (NLS2) – iron replacement [6] Research programme: cannabinoid-based therapeutics - Axim Biotechnologies (Cannabidiol/Gabapentin; Cannbleph) – various actions [7]

Discontinued Entacapone (Comtan; Comtess; OR-611) – catechol O-methyltransferase (COMT) inhibitor [8] IPX-159 – undefined mechanism of action [9] Istradefylline (KW-6002; Nourianz; Nouriast) – adenosine A2A receptor antagonist [10] Pregabalin (CI-1008; isobutylgaba; Lyrica; PD-144723) – gabapentinoid (α2δ subunit-containing voltage-gated calcium channel ligand) [11] Radafaxine (GW-353162; (2S,3S)-hydroxybupropion) – norepinephrine–dopamine reuptake inhibitor (NDRI) [12] Research programme: dopamine receptor agonists - DarPharma (DAR-0300) – dopamine receptor agonist [13] [14] Safinamide (EMD-1195686; Equfina; FCE-26743; ME-2125; NW-1015; Onstryv; PNU-151774; Xadago; ZP-034) – monoamine oxidase MAO-B inhibitor and other actions [15]

Clinically used drugs

Approved drugs Gabapentin enacarbil (ASP-8825; GSK-1838262; Horizant; Regnite; Solzira; XP-13512) – gabapentinoid (α2δ subunit-containing voltage-gated calcium channel ligand) [16] Oxycodone/naloxone (naloxone/oxycodone; Targin; Targinact; Targiniq) – combination of oxycodone (μ-opioid receptor agonist) and naloxone (orally inactive opioid receptor antagonist) (only in severe and treatment-refractory cases) [17] Pramipexole (BI-Sifrol; Daquiran; Mirapex; Mirapexin; Pexola; Sifrol; SND-919) – dopamine D2-like receptor agonist [18] Ropinirole (Adartrel; Repreve; Requip; Ropinirole IR) – dopamine D2-like receptor agonist [19] Rotigotine transdermal (Leganto; N-0437; N-0923; Neupro; Nubrenza; SPM-962) – dopamine D2-like receptor agonist [20]

Off-label drugs Benzodiazepines (GABAA receptor positive allosteric modulators) (e.g., clonazepam) Cannabinoids (cannabinoid receptor modulators) (e.g., cannabis, tetrahydrocannabinol (THC)) Dopamine precursors (indirect dopamine receptor agonists) (e.g., carbidopa/levodopa) Dopamine D2-like receptor agonists (e.g., cabergoline, pergolide) Gabapentinoids (α2δ subunit-containing voltage-gated calcium channel ligands) (e.g., gabapentin, pregabalin) Iron supplements (e.g., ferrous sulfate) Opioids (μ-opioid receptor agonists) (e.g., tramadol, codeine, morphine, oxycodone, hydrocodone, methadone, buprenorphine) (only in severe and treatment-refractory cases) Others (e.g., amantadine, baclofen, bupropion, carbamazepine, clonidine, corticosteroids, dipyridamole, ketamine, lamotrigine, levetiracetam, orphenadrine, oxcarbazepine, perampanel, physostigmine, rasagiline, rifaximin, selegiline, topiramate, valproic acid)

See also List of investigational drugs List of investigational Parkinson's disease drugs

References

External links AdisInsight - Springer

Worked examples

Example 1 — a first encounter with List of investigational restless legs syndrome drugs

Start with the simplest possible case. Write down what List of investigational restless legs syndrome drugs claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to List of investigational restless legs syndrome drugs before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about List of investigational restless legs syndrome drugs ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of List of investigational restless legs syndrome drugs

In research: List of investigational restless legs syndrome drugs appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses List of investigational restless legs syndrome drugs in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: List of investigational restless legs syndrome drugs is common in secondary-school and first-year university syllabi. It links to neighbouring topics Lists of investigational drugs, so understanding it makes those chapters shorter.
In everyday life: Look for List of investigational restless legs syndrome drugs outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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Frequently asked questions

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