ascorbic acid vs ferrous sulfate
Side-by-side comparison of ascorbic acid and ferrous sulfate Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Vitamin C
Feosol, Fer-In-Sol
This medicine is a Vitamin C supplement. It also has Vitamins A and D. It can help prevent tooth decay.
Ferrous sulfate is an iron supplement. It helps increase iron levels in your body.
This medicine gives you extra Vitamins A, C, and D. It helps make sure you get enough of these vitamins in your diet. It also contains fluoride, which helps prevent cavities. This medicine is for children up to age 16 who don't get enough fluoride in their drinking water.
This medicine is used to relieve hot flashes that occur with headaches. It helps to manage these symptoms. Talk to your doctor if your symptoms do not improve.
Vitamin C is needed for growth and repair of tissues in all parts of your body. Vitamins A and D are also important for overall health. Fluoride helps to strengthen tooth enamel and prevent tooth decay.
Ferrous sulfate provides iron, which is needed to make red blood cells. Red blood cells carry oxygen throughout your body. By increasing iron levels, this medicine helps your body function properly.
No common side effects listed.
- • Fatigue
- • Diarrhea
- • Nausea
- • Headache
- • Pain
- Tiredness 2,275
- Pain 2,059
- Feeling sick to your stomach 1,942
- Loose stools 1,785
- Headache 1,762
- Tiredness 3,325
- Diarrhea 3,100
- Feeling sick to your stomach 2,746
- Difficulty breathing 2,724
- Death 2,345
There are no serious warnings listed.
There are no boxed warnings for this medication.
This information is for children. Ask a doctor for advice if you are pregnant or breastfeeding.
Talk to your doctor before taking this medicine if you are pregnant or breastfeeding. They can help you decide if it is right for you.
How to Read This ascorbic acid vs ferrous sulfate Comparison
ascorbic acid is classified in the Vitamin C Supplement drug class, while ferrous sulfate sits within the Iron Supplement class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are available over the counter.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, ascorbic acid has 9,823 submissions while ferrous sulfate has 14,240. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between ascorbic acid and ferrous sulfate — always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.