Contact your healthcare provider promptly if you experience: Severe or persistent heartburn unresponsive to over-the-counter antacids or lifestyle modifications Difficulty swallowing (dysphagia) or painful swallowing (odynophagia), which may indicate esophageal inflammation or stricture Persistent nausea and vomiting that prevents adequate oral intake or leads to dehydration Vomiting blood (hematemesis) or material resembling coffee grounds Black, tarry stools (melena) or visible blood in stool Severe abdominal pain, particularly if localized to the upper abdomen or radiating to the back (stop medication immediately if pancreatitis is suspected) Right upper quadrant pain, fever, or yellowing of skin/eyes, which may indicate gallbladder disease Unintentional weight loss beyond expected therapeutic effects New or worsening chest pain (call 911 if concerning for heart attack), especially if accompanied by shortness of breath These symptoms may indicate complications such as erosive esophagitis, gastrointestinal bleeding, pancreatitis, or gastroparesis

Always base the quantity on the actual documented dose, not the prescribed or standard dose
Saudi Pharm J 29:194200 Bessems JG, Vermeulen NP (2001) Paracetamol (acetaminophen)-induced toxicity: molecular and biochemical mechanisms, analogues and protective approaches
A 2022 systematic review of randomized controlled trials confirms its effectiveness in improving signs of photoaging, including fine wrinkles, skin texture, and collagen formation
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doi:10.1590/1516-3180.2015.01382111