Why should foods rich in tyramine or histamine be avoided during treatment with Rifinah (isoniazid + rifampicin)?

Foods rich in tyramine or histamine should be avoided during Rifinah (isoniazid + rifampicin) treatment because isoniazid inhibits monoamine oxidase and diamine oxidase, reducing tyramine and histamine metabolism and potentially causing headache, sweating, palpitations, flushing, and hypotension.