No, Strepsils containing 2,4-dichlorobenzyl alcohol are generally considered halal.
This is because the alcohol present, 2,4-dichlorobenzyl alcohol, is not the type of alcohol that is intoxicating and prohibited in Islam (Khamr). It's used for its antiseptic properties.
In short:
- Halal Status: Strepsils with 2,4-dichlorobenzyl alcohol are permissible.
- Reason: The alcohol is not intoxicating and serves a medicinal purpose.