I'm sure you are more knowledgeable bout this than me, but do you think that if there were specific problems, they would be listed under contra-indications?:

https://www.medicines.org.uk/emc/product/890/smpc#gref

There should be pharmaceutical advice from the manufacturers that will be able to give specific advice for your particular patient's needs, and should have records of anything untoward happening that they are aware of. Clicking on this link - contact details - there is the UK link.

I hope you find what you need to treat your patient; I know that muscle spasm wherever it is situated, while it lasts, can be really severe.

Thank you very much Dr.Mary for you valuable answer and Thanks for support.

Regards

From the link of Dr.Mary above👆:

Special warnings and precautions for use:

In case severe, unexplained abdominal pain persists or worsens, or occurs together with symptoms like fever, nausea, vomiting, changes in bowel movements, abdominal tenderness, decreased blood pressure, fainting, or blood in stool, appropriate diagnostic measures are needed to investigate the aetiology of the symptoms.

Buscopan Ampoules can cause tachycardia, hypotension and anaphylaxis, therefore use with caution in patients with cardiac conditions such as cardiac failure, coronary heart disease, cardiac arrhythmia or hypertension, and in cardiac surgery. Monitoring of these patients is advised. Emergency equipment and personnel trained in its use must be readily available.

Because of the possibility that anticholinergics may reduce sweating, Buscopan should be administered with caution to patients with pyrexia.

Elevation of intraocular pressure may be produced by the administration of anticholinergic agents such as Buscopan in patients with undiagnosed and therefore untreated narrow angle glaucoma. Therefore, patients should seek urgent ophthalmological advice in case they should develop a painful, red eye with loss of vision after the injection of Buscopan.

After parenteral administration of Buscopan, cases of anaphylaxis including episodes of shock have been observed. As with all drugs causing such reactions, patients receiving Buscopan by injection should be kept under observation.

The inevitable stomach cramps, which occur with viral gastroenteritis, are due to spasm of the bowel walls, as they try to expel toxins from the gut. Antispasmodic medications, such as Buscopan, work well to settle stomach cramps and can be prescribed by your GP.