chemistry

Tolperisone

Tolperisone is a chemistry 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 Tolperisone rather than just read about it. In short: Tolperisone (trade name Mydocalm among others) is a centrally acting skeletal muscle relaxant used for the treatment of increased muscle tone associated with neurological diseases. It has been used since the 1960s.

Key takeaways

Tolperisone belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Tolperisone to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Tolperisone from memory before moving on to harder problems.

Reference excerpt

Tolperisone (trade name Mydocalm among others) is a centrally acting skeletal muscle relaxant used for the treatment of increased muscle tone associated with neurological diseases. It has been used since the 1960s.

Medical uses Tolperisone is indicated for use in the treatment of pathologically increased tone of the skeletal muscle caused by neurological diseases (damage of the pyramidal tract, multiple sclerosis, myelopathy, encephalomyelitis) and of spastic paralysis and other encephalopathies manifested with muscular dystonia. Other possible uses include:

Spondylosis Spondylarthrosis Cervical and lumbar syndromes Arthrosis of the large joints Obliterating atherosclerosis of the extremity vessels (Peripheral arterial disease) Diabetic angiopathy Thromboangiitis obliterans Raynaud's syndrome Painful reflex muscular spasm, contraction & rigidity Acrocyanosis Tension headache Neuropathic pain

Contraindications and cautions Manufacturers report that tolperisone should not be used in patients with myasthenia gravis. Only limited data are available regarding the safety in children, youths, during pregnancy and breastfeeding. It is not known whether tolperisone is excreted into mother's milk. In 2012, following concerns about safety and efficacy, an "article 31 referral" was triggered at the European Medicines Agency (EMA). After the review and a subsequent re-examination, the Agency concluded that the benefits of tolperisone-containing medicines given orally continue to outweigh their risks. However, there is weak support for tolperisone's efficacy, specifically due to the prevalence of hypersensitivity symptoms such as flushing, rash, severe skin itchiness (with raised lumps), wheezing, difficulty breathing and swallowing, fast heartbeat, and fast decrease in blood pressure (basically anaphylaxis). The EMA recommends that tolperisone use be restricted to the treatment of adults with post-stroke spasticity (stiffness). The EMA also advises cessation of advertising, only using tolperisone orally, updating patient information leaflets, and changing to another medicine for existing users.

Side effects Adverse effects occur in fewer than 1% of patients and include muscle weakness, headache, arterial hypotension, nausea, vomiting, dyspepsia, and dry mouth. All effects are reversible. Allergic reactions occur in fewer than 0.1% of patient and include skin rash, hives, Quincke's edema, and in some cases anaphylactic shock.

Overdose Excitability has been noted after ingestion of high doses by children. In suicide studies of three isolated cases, it is believed that ingestion of tolperisone was the cause of death.

Interactions Tolperisone does not have a significant potential for interactions with other pharmaceutical drugs. It cannot be excluded that combination with other centrally acting muscle relaxants, benzodiazepines or nonsteroidal anti-inflammatory drugs (NSAIDs) may make a dose reduction necessary in some patients.

Pharmacology

Mechanism of action Tolperisone is a centrally acting skeletal muscle relaxant that acts at the reticular formation in the brainstem by blocking voltage-gated sodium and calcium channels.

Pharmacokinetics Tolperisone is absorbed nearly completely from the gut and reaches its peak blood plasma concentration after 1.5 hours. It is extensively metabolised in the liver and kidneys. The substance is excreted via the kidneys in two phases; the first with a half-life of two hours, and the second with a half-life of 12 hours.

Chemistry Tolperisone is a piperidine derivative.

Society and culture Tolperisone was developed in the 1960s in Hungary.

Brand names Brand names include Biocalm, Miderizone, Mydeton, Mydocalm, Mydoflex, Myolax, Myoxan, Tolson, Topee, and Viveo.

See also Chemically related drugs with similar mechanism of action:

Eperisone Inaperisone Lanperisone Silperisone Muscle relaxants (drug class):

Baclofen Carisoprodol Cyclobenzaprine Tizanidine

References

Illustrations

Worked examples

Example 1 — a first encounter with Tolperisone

Start with the simplest possible case. Write down what Tolperisone claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Tolperisone 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 Tolperisone 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 Tolperisone

In research: Tolperisone appears in chemistry 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 Tolperisone 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: Tolperisone is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1-Piperidinyl compounds, Aromatic ketones, Calcium channel blockers, so understanding it makes those chapters shorter.
In everyday life: Look for Tolperisone 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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How to study Tolperisone in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tolperisone means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Tolperisone out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tolperisone in simple terms?

Why does Tolperisone matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Tolperisone?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Tolperisone.