The presence of pinworm next to the anus after taking Zentel does not necessarily mean that the medicine has not worked.

Zentel (albendazole) is an effective anti-pinworm drug, but its effect is not immediate. The drug prevents worms from absorbing sugars, which leads to their death, but this is not an immediate process.

The fact that you observe dead individuals in the stool suggests that the drug is working properly. Dead pinworms in the stool are a good sign of the effectiveness of the treatment. The pinworm you noticed next to the anus may have already been present in the anal area before taking the drug. Female pinworms lay eggs around the anus, so individual individuals can be seen even after treatment has begun.

It takes time for the treatment to be fully effective. Some pinworms can survive the first dose of the drug, so it is often recommended to repeat the dose after 2-3 weeks, but not after 5 days. Please note that improper use of the medicine may lead to the development of resistance of the parasites to albendazole.

In addition, taking the drug too often can exacerbate common side effects such as headaches, nausea or abdominal pain. It can also potentially lead to liver damage. Zentel is metabolized in the liver, and too frequent intake can put a strain on this organ.

It is worth remembering that the correct dosage of Zentel should be determined by a doctor. Zentel is a prescription drug, so the need for its use is assessed by a doctor. If you have concerns about the effectiveness of your first dose, it is best to consult your doctor, who can assess your situation and adjust your treatment regimen if necessary.

If you are unable to consult your doctor, you can use the teleconsultation here:
https://www.gdziepolek.pl/telekonsultacja