Toclase Syrup

When it comes to pharmaceuticals, understanding the composition and usage of a medication is crucial. Toclase, a medication containing the active ingredient carbetapentane, serves as a notable example in the realm of antitussives. In this article, we delve into the world of Toclase, examining its availability, uses, mechanism of action, side effects, and shedding light…

Dosage form

Pack size


7.5 Mg/5Ml 200Ml



Generic Name (Ingredient)

1.5 Mg Pentoxiverine Hydrochloride

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Recent information suggests that Toclase has been discontinued, marking a shift in the landscape of available antitussive medications.

Active Ingredient

Toclase Syrup contains the active ingredient carbetapentane, which is also known as Pentoxyverine. It is a non-opioid central acting antitussive with antimuscarinic, anticonvulsant, and local anesthetic properties. It is used as an active ingredient in over-the-counter cough suppressants in combination with guaifenesin and H1-receptor antagonists.


Toclase, or carbetapentane, plays a pivotal role in suppressing coughs associated with various conditions, including:

1. Common Cold

Toclase is an effective tool in alleviating coughs induced by the common cold. It offers respite from the persistent coughing that often accompanies this viral infection.

2. Influenza (Flu)

Individuals battling the flu can find relief from disruptive coughing by turning to Toclase. It eases the discomfort of flu-induced coughs, aiding the recovery process.

3. Bronchitis

In cases of bronchitis, where coughing can be both frequent and distressing, Toclase steps in as a reliable cough suppressant. It provides relief from the relentless coughing fits associated with this respiratory condition.

4. Sinusitis

For those dealing with sinusitis, characterized by sinus inflammation often accompanied by a nagging cough, Toclase offers a means to mitigate this uncomfortable symptom.

Mechanism of Action

While the precise mechanism of carbetapentane’s antitussive action is not fully elucidated, it is believed to operate through sigma-1 receptors found in the central nervous system. Toclase, at a concentration of 0.213%, acts as an agonist at sigma receptors, with a Ki of 75±28 nM, as evidenced in competitive binding assays.

The role of sigma receptors in cough suppression remains somewhat enigmatic; however, their prominence in the nucleus tractus solitarius (NTS) of the brainstem is noteworthy. The NTS is in close proximity to the brainstem’s cough center, potentially acting as a “gate” for the cough reflex. Here, sigma-1 receptor agonists like Toclase may modulate afferent activity before reaching the cough center.

It’s speculated that highly lipophilic sigma-1 agonists may penetrate the central nervous system following systemic administration. When administered via aerosols, sigma-1 receptor agonists might exert temporary effects in the periphery, modulating cough by activating sigma receptors present in the lungs. However, evidence of peripheral localization following aerosol administration remains limited, with systemic exposure largely ruled out.

Toclase’s Side Effects

As with any medication, Toclase Syrup is not without potential side effects. These may encompass:

  • Allergic skin reactions
  • Dry mouth
  • Constipation
  • Somnolence
  • Urinary retention
  • Impaired accommodation
  • Increased viscosity of bronchial secretions
  • Tachycardia
  • Mental confusion or excitement in elderly individuals

This list, however, is not exhaustive, and other side effects may manifest. It is imperative to consult a healthcare professional before commencing any medication to gain a comprehensive understanding of potential side effects and associated risks.

In-Depth Insights into Carbetapentane

Carbetapentane, also known as Pentoxyverine, stands as a well-known antitussive (cough suppressant) utilized for addressing coughs related to conditions like the common cold. It is available over-the-counter under various brand names, often in combination with decongestants. One notable product is Certuss, which combines guaifenesin and pentoxyverine.

Carbetapentane effectively addresses dry coughs associated with ailments such as the common cold, bronchitis, or sinusitis. It’s essential to note that, akin to codeine and other antitussives, carbetapentane relieves the cough symptom but does not cure the underlying illness. Notably, there is a paucity of controlled clinical trials assessing the efficiency of pentoxyverine.

Pharmacologists have employed this substance as a selective agonist at the sigma-1 receptor in animal and in vitro experiments.


In the world of pharmaceuticals, having a comprehensive grasp of your prescribed medication is paramount. Toclase Syrup, featuring carbetapentane as its active ingredient, serves as a valuable antitussive option. Understanding its mechanism of action, potential side effects, and exploring carbetapentane’s role in addressing coughs can empower individuals to make informed decisions about their health. Always remember to consult with a healthcare provider for personalized guidance when embarking on any medication journey.


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The information on this page is not intended to be a substitute for professional medical advice, diagnosis, or treatment. always seek the advice for your physician or another qualified health provider with any questions you may have regarding a medical condition. Always remember to

  1. Ask your own doctor for medical advice.
  2. Names, brands, and dosage may differ between countries.
  3. When not feeling well, or experiencing side effects always contact your own doctor.


The truth is that when we’re sick, or worried about getting sick, the internet won’t help.

According to Wikipedia, cyberchondria is a mental disorder consisting in the desire to independently make a diagnosis based on the symptoms of diseases described on Internet sites.

Why you can't look for symptoms on the Internet

If diagnoses could be made simply from a textbook or an article on a website, we would all be doctors and treat ourselves. Nothing can replace the experience and knowledge of specially trained people. As in any field, in medicine there are unscrupulous specialists, differences of opinion, inaccurate diagnoses and incorrect test results.


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