The recommended daily dosage of vitamin C varies based on age, gender, and certain conditions like smoking, pregnancy, and lactation. Here are the general guidelines:

• For adult men: 90 milligrams (mg) per day.
• For adult women: 75 mg per day.
• For pregnant women: 85 mg per day.
• For breastfeeding women: 120 mg per day.
• Smokers should add an additional 35 mg per day to these recommendations due to the increased oxidative stress from smoking¹²³⁴.

The upper limit for vitamin C intake is 2,000 mg per day for adults. Exceeding this amount can cause gastrointestinal issues such as diarrhea, nausea, and abdominal cramps⁵.

Footnotes

1. https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/vitamin-c/faq-20058030 ↩

2. https://ods.od.nih.gov/factsheets/VitaminC-Consumer/ ↩

3. https://www.ncbi.nlm.nih.gov/books/NBK225480/ ↩

4. https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-c/ ↩

5. https://harvard.edu/vitamin-c ↩