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Iron Fumarate 1 mg Supplement: Men, Women and Small Doses
An iron fumarate 1 mg supplement adds only a small slice of what adults need: 8 mg a day for men and 18 mg for women aged 19 to 50. Reviralis prints iron as ferrous fumarate, 1 mg per two capsules, 6% of the Daily Value. It is no stand-in for a clinician's advice on low iron.
Written by the Goreviralis label deskUpdated · 4 min read
How much of a day's iron is an iron fumarate 1 mg supplement?
For a man it is about an eighth of a day's need; for a woman aged 19 to 50 it is about an eighteenth.
Adults need 8 mg (men) or 18 mg (women 19 to 50). The upper limit is 45 mg (NIH ODS, Iron). The label's 6% Daily Value uses a different base, but the sums below use the NIH figures.
| Group | Daily need | Share of 1 mg |
|---|---|---|
| Men | 8 mg | 12.5% |
| Women 19 to 50 | 18 mg | 5.6% |
| Upper limit, adults | 45 mg | 2.2% |
What can 1 mg of iron do, and what can it not do?
It can top up a diet a little. It cannot correct low iron, and it is not a test.
Low iron has many causes, from heavy periods to blood loss in the gut. Tiredness has even more. A bottle with 1 mg per serving does not tell you which applies to you, and a whole bottle of 30 servings adds up to just 30 mg, barely more than one woman's single day of need. Only a blood test and a clinician can settle it.
Fair points
- A small dose, far under the 45 mg limit
- The label prints the form: ferrous fumarate
Limits
- Too small to change a low iron result
- No source tests this product itself
Why must iron products stay out of children's reach?
Iron overdose is a leading cause of poisoning in young children (NIH ODS, Iron).
That holds for any bottle with iron, however small the dose per serving. The Reviralis label says to keep it out of reach of children and not to give it to anyone under 18. Store the bottle high, shut, and away from heat, light and humidity, as the label asks.
Iron can also cut the absorption of thyroid hormone, so ask your pharmacist about a gap if you take it. Read the thyroid medicine post for more.
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See packsWhat should I ask before taking any iron?
Ask whether you need iron at all, because extra iron helps only if you are low.
Do I need an iron blood test first? Do my medicines or a thyroid pill need a gap from iron? Am I pregnant, nursing, or being treated for a condition that changes iron needs? Keep taking prescribed medicine, including any antiviral, while you ask.
The full list of lines is on the Supplement Facts page; see also who it is for and the major minerals group.
FAQ01
Reviralis questions people ask
How much iron is in Reviralis?
The label prints iron as ferrous fumarate, 1 mg per two capsules, or 6% of the Daily Value. That is far under the 45 mg adult upper limit. One bottle holds 30 servings of two capsules.
Is 1 mg of iron enough for a woman?
No. Women aged 19 to 50 need 18 mg a day, so 1 mg is about 5.6% of that. It cannot stand in for a diet or a prescribed iron product. A clinician can say whether you are low.
What is ferrous fumarate?
It is a salt of iron used in supplements; the iron is in the ferrous form. The label gives the form and the iron amount, 1 mg. The label does not say how much of the salt's weight that is.
Can iron from a supplement poison a child?
Yes. NIH says iron overdose is a leading cause of poisoning in young children. Keep every bottle of any supplement with iron shut and out of reach, and call poison control or 911 if a child swallows it.
Does iron interact with thyroid medicine?
It can lower absorption of thyroid hormone when taken together. Ask your pharmacist how far apart to take them. Do not change a prescribed dose or schedule on your own.
Who wrote this02
Written and reviewed by
Pages built from the label, the sales page and linked NIH, CDC, FDA, FTC, Mayo Clinic and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site for a U.S. stocking partner for Reviralis. It is not the manufacturer or the distributor named on the label. We earn money when you buy through our order links.
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