It is not recommended to drink coffee during the treatment for Helicobacter pylori.

During the treatment for Helicobacter pylori infection, it is advised to consume more fresh vegetables and fruits rich in vitamins, maintain regular meals, and eat light, easily digestible foods. Avoid strong alcohol, strong tea, coffee, and also greasy foods. The main methods for detecting Helicobacter pylori infection are the carbon-13 urea breath test or the carbon-14 urea breath test. If the test results are positive, a standard eradication treatment using a bismuth-containing quadruple therapy for two weeks should be implemented. Additionally, a re-examination is needed one month after discontinuing the medication to confirm whether the eradication is complete.