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DiffCof Dual Action Chesty Cough Syrup must not be used in patients known to be hypersensitive to bromhexine, guaifenesin or other components of the formulations.
Guaifenesin is considered to be unsafe in patients with porphyria because it has been shown to be porphyrinogenic in animals.
In case of rare hereditary conditions that may be incompatible with an excipient of the product the use of the product is contraindicated.
