When should you worry about decreased appetite? A short-term drop in hunger is common during stress, illness, travel, or medication changes. Concern is warranted if poor appetite persists beyond two weeks, leads to unintended weight loss, dehydration, fatigue, or weakness, or occurs alongside symptoms like persistent pain, nausea, fever, depression, or difficulty swallowing. Older adults and children require earlier evaluation. Appetite loss after starting antibiotics may occur, but severe or worsening effects should be assessed. Even content discussing cephalexin capsules wholesale should remind readers that ongoing appetite changes deserve medical review to identify nutritional deficits, infections, gastrointestinal disorders, endocrine issues.