Interactions on record — worth a quick check against your medications. Based on 2 of 3 ingredients. Check your meds →
Dietary supplement

Laxative Ingredients & Drug Interactions

by Perfect 7

Laxative label
See full label image
Tablet Or Pill Category: Botanical With Nutrients
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Laxative against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Laxative is a dietary supplement by Perfect 7 with 3 active ingredients. Its ingredients are commonly taken for iron-deficiency anemia, low iron stores during pregnancy, fatigue from iron deficiency.Based on those ingredients, 218 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Senna, Iron. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Laxative by Perfect 7

Ask about any prescription or over-the-counter medication and we check it for interactions with Laxative by Perfect 7 — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Laxative by Perfect 7

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 3 of its 3 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

Perfect 7 contains three active ingredients. Iron is essential for building red blood cells and is effective for iron deficiency anemia and anemia of chronic disease; it's also possibly effective for heart failure.

Senna and senna leaf 4:1 extract are both herbal laxatives — they work by stimulating your bowel muscles to move stool through your intestines. Both are likely effective for constipation and possibly effective for bowel prep.

The product also contains inactive ingredients including tamarind juice, date fruit extract, fig, prune, and apple fiber, which add bulk and natural laxative properties but aren't counted as active ingredients.

Does it work?

Strong evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: Occasional constipation relief.
  • We looked for evidence on: Constipation, Bowel preparation, Occasional irregularity, Short-term bowel function.
  • The strongest evidence on file: Senna is rated "Likely Effective" for Constipation (Natural Medicines).
  • Also on file: Senna is rated "Possibly Effective" for Bowel preparation.

Iron is effective for iron deficiency anemia, anemia of chronic disease, and pregnancy-related iron deficiency. It's possibly effective for heart failure.

Senna and senna leaf extract are both likely effective for constipation and possibly effective for bowel preparation. Neither ingredient has reliable evidence for treating high potassium levels.

The evidence, ingredient by ingredient Iron Senna

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Iron is generally well tolerated at recommended doses, but excess iron can be toxic — use it only when there's a genuine need. The most common side effects are abdominal pain, constipation, diarrhea, stomach irritation, nausea, and vomiting.

Rare serious effects include stomach or intestinal ulcers. Iron is often recommended during pregnancy, but your prenatal care provider should guide the dose.

It's generally acceptable while breastfeeding at appropriate doses; check with your provider. Senna and senna leaf extract are generally well tolerated for short-term occasional use, but they're not meant for long-term daily use without medical supervision.

The most common side effects are abdominal pain, cramping, diarrhea, gas, nausea, urgency, and urine discoloration. Rare serious effects include skin rashes.

Both ingredients are possibly safe in pregnancy and lactation at standard doses, but check with your doctor first.

Side effects, ingredient by ingredient Iron Senna

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 2 of the 2 matched ingredients can interact with medications — Senna, Iron.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; heart-rhythm medications; Parkinson's medications.
  • For scale: 218 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking Perfect 7, double-check with your pharmacist if you take any of these: thyroid medication (levothyroxine), antibiotics (quinolones like ciprofloxacin or tetracyclines like doxycycline), bisphosphonates (osteoporosis drugs), levodopa (Parkinson's), methyldopa (blood pressure), heart medications like digoxin, blood thinners like warfarin, birth control pills or estrogen, diuretics (water pills), or immunosuppressants like mycophenolate mofetil. All documented interactions are Moderate severity and mostly involve spacing your doses apart.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with clinical evidence supporting its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Perfect 7 is designed as a laxative — the senna and senna leaf extract are the working ingredients. If you take iron supplements for anemia, medications for your thyroid, blood thinner, heart rhythm medication, antibiotics, osteoporosis drugs, or blood pressure medication, you'll need to separate doses carefully or check with your pharmacist first.

Don't use this product long-term without medical guidance, and talk to us before starting if you're pregnant, breastfeeding, or on any regular medications.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 3 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Mar 25, 2013.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Laxative, straight from the product label.

Brand Perfect 7
Barcode (UPC) 096231702004
Net contents 200 Tablet(s)
Market status Off market
Date entered into DSLD Mar 25, 2013
DSLD ID 20100
Product type Botanical With Nutrients
Supplement form Tablet Or Pill
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Children 4 or More Years of Age, Adult (18 - 50 Years), Gluten Free, Sugar Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Laxative by Perfect 7, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Tablet(s)
Maximum serving Sizes:
2 Tablet(s)
Servings per container
200
UPC/BARCODE
096231702004
IngredientAmount% DV
Iron400 mcg2.2%
Senna300 mg--
Senna Leaf 4:1 Extract89 mg--

Other ingredients: Tamarind Juice Extract, Date fruit 4:1 extract, Fig, Prune, Apple Fiber, Other Ingredients:

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formulation

Contains NO gluten, yeast, sugar, starch, artificial colors, flavors or preservatives.

Suggested/Recommended/Usage/Directions

DIRECTIONS FOR USE: For adults and children at least 12 years of age. Take 1 to 2 tablets, preferably at night with 8 ounces of water or juice. It is important to drink additional liquid throughout the day, preferably 6 to 8 ounces of water. Use for 2 to 7 days as needed.

Precautions

Do not use for more than 7 days unless directed by your doctor.

Not Recommended for children under 12.

Not recommended for long-term use. Notice: This product contains Senna. Read and follow directions carefully. Do not use if you have or develop diarrhea, loose stools, or abdominal pain because Senna may worsen these conditions and be harmful to your health.

Consult your physician if you have frequent diarrhea or if you are pregnant, nursing, taking medication or have a medical condition.

WARNING--Close tightly and keep away from children. Contains iron, which can harm or cause death to a child. If a child accidentally swallows this product, or call a doctor or poison control center immediately.

Keep out of reach of children.

DO NOT USE IF SAFETY SEAL IS BROKEN.

General Statements

LOT 121304 EXP 12/2013

Naturally Grown

Gen. 1:29

FDA Disclaimer Statement

**These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Seals/Symbols

GLUTEN FREE

FDA Statement of Identity

SENNA HERBAL DIETARY SUPPLEMENT

Storage

Store this product in a cool dry place below 30(0)C (86(0)F).

WARNING--Close tightly and keep away from children.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Laxative by Perfect 7 label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Laxative label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Laxative by Perfect 7

These are the 3 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Tablet(s) Dosage formTablet Or Pill Servings per container200 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Iron

Interacts with
80 drugs
400 mcg per serving Form: Ferrous Fumarate

Iron is an essential mineral your body needs to make hemoglobin and carry oxygen in the blood. Supplements are mainly useful for treating or preventin...

Iron monograph & interactions

Senna

Interacts with
140 drugs
300 mg per serving

Senna is a plant-based stimulant laxative that is widely used and generally effective for short-term relief of constipation. It is best used occasiona...

Senna monograph & interactions

Senna Leaf 4:1 Extract

Interacts with
140 drugs
89 mg per serving

Senna is a plant-based stimulant laxative that is widely used and generally effective for short-term relief of constipation. It is best used occasiona...

Senna Leaf 4:1 Extract monograph & interactions

Other (inactive) ingredients: Tamarind Juice Extract, Date fruit 4:1 extract, Fig, Prune, Apple Fiber, Other Ingredients:. These complete the product’s ingredient list but are not active constituents.

Interaction report

Laxative by Perfect 7 Drug Interactions

Want to check YOUR meds against Laxative?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
218Drugs
217 Moderate 1 Minor

Ingredients driving the most interactions

Senna 140
Iron 80

Individual Drug Interactions

The ingredients in Laxative interact with 218 drugs. Click any drug to see the details.

2 of the 3 ingredients in Laxative interact with drugs. Each result below shows which ingredient is responsible. Senna Iron

Each ingredient & the kinds of drugs it affects

For each ingredient in Laxative with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Senna5 drug types · 140 drugs

Digoxin (Lanoxin)

Theoretically, senna might increase the risk of adverse effects when taken with digoxin.
Overuse/abuse of senna increases the risk of adverse effects from cardiac glycosides, such as digoxin, due to potassium depletion.

Likelihood Possible Evidence D
Diuretic Drugs

Theoretically, senna might increase the risk of hypokalemia when taken with diuretic drugs.
Overuse of senna might compound diuretic-induced potassium loss and increase the risk for hypokalemia.

Likelihood Possible Evidence D
Estrogens

Theoretically, taking senna may interfere with the absorption of exogenous estrogens.
Some preliminary clinical evidence suggests that senna reduces the absorption of estradiol and decreases serum concentrations of estrone and estrone sulfate by decreasing intestinal transit time.

Likelihood Possible Evidence B
Stimulant Laxatives

Theoretically, senna might increase the risk for fluid and electrolyte loss when taken with other stimulant laxatives.
Senna is a stimulant laxative; concomitant use with other stimulant laxatives might compound fluid and electrolyte loss.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, excessive use of senna might increase the effects of warfarin.
Senna has stimulant laxative effects and can cause diarrhea. Diarrhea can increase the effects of warfarin, increase international normalized ratio (INR), and increase the risk of bleeding. In one case report, excessive use of senna for 3 weeks resulted in diarrhea, bloody stools, and an elevated INR of 11.9.

Likelihood Possible Evidence D
Senna full monograph & interactions

Iron13 drug types · 80 drugs

Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)

Iron might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption when taken in a fasting state.
Advise patients that bictegravir/emtricitabine/tenofovir alafenamide and iron can be taken together if taken with food. However, if taken on an empty stomach, bictegravir/emtricitabine/tenofovir alafenamide should not be taken with, or 2 hours after, iron containing products.

Likelihood Probable Evidence D
Bisphosphonates

Iron reduces the absorption of bisphosphonates.
Advise patients that doses of bisphosphonates should be separated by at least two hours from doses of all other medications, including supplements such as iron. Divalent cations, including iron, can decrease absorption of bisphosphonates by forming insoluble complexes in the gastrointestinal tract.

Likelihood Probable Evidence D
Denosumab (Prolia, Others)

Administration of intravenous iron within one month of denosumab administration might increase the risk of severe hypophosphatemia and hypocalcemia.
A case of severe hypocalcemia (albumin corrected calcium 6.88 mg/dL, ionized calcium 3.68 mg/dL) and hypophosphatemia (<0.5 mg/dL) with respiratory acidosis, QT interval prolongation, and nonsustained ventricular tachycardia was reported in a 76-year-old male who had received an iron polymaltose infusion within 2 weeks of a subcutaneous injection of denosumab. Serum parathyroid hormone was also elevated (348 pg/mL). Subsequent iron infusions with iron polymaltose and ferric carboxymaltose were followed by transient hypophosphatemia, but without hypocalcemia. Additionally, a literature review describes 6 additional cases of hypophosphatemia and hypocalcemia in patients 52-92 years of age who had been administered intravenous iron as either ferric carboxymaltose or iron polymaltose and subcutaneous denosumab within 1-4 weeks of each other.

Likelihood Possible Evidence D
Dolutegravir (Tivicay)

Iron might decrease dolutegravir levels by reducing its absorption.
Advise patients to take dolutegravir at least 2 hours before or 6 hours after taking iron. Pharmacokinetic research shows that iron can decrease the absorption of dolutegravir from the gastrointestinal tract through chelation. When taken under fasting conditions, a single dose of ferrous fumarate 324 mg orally along with dolutegravir 50 mg reduces overall exposure to dolutegravir by 54%.

Likelihood Probable Evidence B
Integrase Inhibitors

Theoretically, taking iron along with integrase inhibitors might decrease the levels and clinical effects of these drugs.
Iron is a divalent cation. There is concern that iron may decrease the absorption of integrase inhibitors from the gastrointestinal tract through chelation. One pharmacokinetic study shows that iron can decrease blood levels of the specific integrase inhibitor dolutegravir through chelation. Also, other pharmacokinetic research shows that other divalent cations such as calcium can decrease the absorption and levels of some integrase inhibitors through chelation.

Likelihood Possible Evidence D
Levodopa

Iron might decrease levodopa levels by reducing its absorption.
Advise patients to separate doses of levodopa and iron as much as possible. There is some evidence in healthy people that iron forms chelates with levodopa, reducing the amount of levodopa absorbed by around 50%. The clinical significance of this hasn't been determined.

Likelihood Probable Evidence B
Levothyroxine (Synthroid, Others)

Iron might decrease levothyroxine levels by reducing its absorption.
Advise patients to separate levothyroxine and iron doses by at least 2 hours. Iron can decrease the absorption and efficacy of levothyroxine by forming insoluble complexes in the gastrointestinal tract.

Likelihood Probable Evidence B
Methyldopa (Aldomet)

Iron might decrease methyldopa levels by reducing its absorption.
Advise patients to separate methyldopa and iron doses by at least 2 hours. Iron can decrease the absorption of methyldopa from the gastrointestinal tract through chelation, resulting in increases in blood pressure.

Likelihood Probable Evidence B
Mycophenolate Mofetil (Cellcept)

Theoretically, iron might decrease mycophenolate mofetil levels by reducing its absorption.
Advise patients to take iron 4-6 hours before, or 2 hours after, mycophenolate mofetil. It has been suggested that a decrease of absorption is possible, probably by forming nonabsorbable chelates. However, mycophenolate pharmacokinetics are not affected by iron supplementation in available clinical research.

Likelihood Unlikely Evidence D
Penicillamine (Cuprimine, Depen)

Iron might decrease penicillamine levels by reducing its absorption.
Advise patients to separate penicillamine and iron doses by at least 2 hours. Oral iron supplements can reduce absorption of penicillamine by 30% to 70%, probably due to chelate formation. In people with Wilson's disease, this interaction has led to reduced efficacy of penicillamine.

Likelihood Probable Evidence D
Quinolone Antibiotics

Iron might decrease levels of quinolone antibiotics by reducing their absorption.
Advise patients to separate quinolone antibiotics and iron doses by at least 2 hours. Iron decreases the absorption of quinolones due to formation of insoluble complexes in the gastrointestinal tract.

Likelihood Probable Evidence D
Tetracycline Antibiotics

Iron might decrease levels of tetracycline antibiotics by reducing their absorption.
Advise patients to take iron at least 2 hours before or 4 hours after tetracycline antibiotics. Concomitant use can decrease absorption of tetracycline antibiotics from the gastrointestinal tract by 50% to 90%.

Likelihood Probable Evidence D
Chloramphenicol

Theoretically, taking chloramphenicol with iron might reduce the response to iron therapy in iron deficiency anemia.
Chloramphenicol interferes with erythrocyte maturation. However, since chloramphenicol isn't usually taken for prolonged periods, this isn't likely to be clinically significant.

Likelihood Unlikely Evidence D
Iron full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Laxative, from the product label.

Perfect 7

See all Perfect 7 products
Name
AGAPE HEALTH PRODUCTS
Street Address
16458 Bolsa Chica Street #233
City
Huntington Beach
State
CA
ZipCode
92649
Phone Number
(800) 767-4776
Web Address
www.Perfect7.org
Pharmacist Counseling Corner

Laxative by Perfect 7: Common Questions

Does Laxative by Perfect 7 interact with any medications?
Yes. Based on its ingredients, Laxative has a known interaction with 218 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Laxative contains 3 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
How does the iron in this laxative work?
Iron is used to treat anemia — it helps your body build more red blood cells. It's included here as an active ingredient, not just a filler. If you don't have low iron levels, you may not need it, and excess iron can be toxic.
Is this safe to take every day?
The senna laxative ingredients are safe for short-term occasional use but shouldn't be used for long-term daily use without medical advice. If you're dealing with ongoing constipation, talk to your doctor or pharmacist about other options.
Can I take this if I'm pregnant?
Senna and senna leaf extract are possibly safe in pregnancy at standard doses, but check with your prenatal care provider first. Iron is often recommended during pregnancy, but your provider should guide the dose based on your blood work.
Will this work with my birth control?
Senna can reduce how well estrogen-based birth control is absorbed, which might lower its effectiveness. Use backup contraception if you're taking this product, and talk to your pharmacist about timing.
What side effects should I expect?
The most common ones are abdominal pain, cramping, diarrhea, gas, nausea, and temporary urine discoloration from senna. Iron may cause constipation, diarrhea, or stomach upset. Serious side effects are rare but can include skin rashes.
Can I take this with my other laxatives?
No — senna is a stimulant laxative, and taking it with other stimulant laxatives increases the risk of losing too much fluid and electrolytes. Stick to one laxative at a time, and talk to your doctor about what you're using.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Laxative label
Go deeper

The Full Monographs Behind Laxative’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Iron

Interacts with 80 drugs

Iron is an essential mineral your body needs to make hemoglobin and carry oxygen in the blood. Supplements are mainly useful for treating or preventing iron deficiency and iron-deficiency an...

Read the full Iron monograph → Herb & supplement monograph

Senna

Interacts with 140 drugs

Senna is a plant-based stimulant laxative that is widely used and generally effective for short-term relief of constipation. It is best used occasionally and for only a few days at a time, s...

Read the full Senna monograph →
Sources

Sources & How We Checked

Laxative's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 114 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Iron 72 references
  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  2. Bruner AB, Joffe A, Duggan AK, et al. Randomized study of cognitive effects of iron supplementation in non- anaemic iron-deficient adolescent girls. Lancet 1996;348:992-6.
  3. Ullen H, Augustsson K, Gustavsson C, Steineck G. Supplementary iron intake and risk of cancer: reversed causality? Cancer Lett 1997;114:215-6.
  4. Reunanen A, Takkunen H, Knekt P, et al. Body iron stores, dietary iron intake and coronary heart disease mortality. J Intern Med 1995;238:223-30. PubMed
  5. Lund EK, Wharf SG, Fairweather-Tait SJ, Johnson IT. Oral ferrous sulfate supplements increase the free radical-generating capacity of feces from healthy volunteers. Am J Clin Nutr 1999;69:250-5.
  6. Rehman A, Collis CS, Yang M, et al. The effects of iron and vitamin C co-supplementation on oxidative damage to DNA in healthy volunteers. Biochem Biophys Res Comm 1998;246:293-8. PubMed
  7. Klipstein-Grobusch K, Grobbee DE, den Breeijen JH, et al. Dietary iron and risk of myocardial infarction in the Rotterdam Study. Am J Epidemiol 1999;149:421-8. PubMed
  8. Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
  9. Tatro DS, ed. Drug Interactions Facts. Facts and Comparisons Inc., St. Louis, MO. 1999.
  10. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
  11. Campbell N, Paddock V, Sundaram R. Alteration of methyldopa absorption, metabolism, and blood pressure control by ferrous sulfate and ferrous gluconate. Clin Pharmacol Ther 1988;43:381-6..
  12. Schumann K, Borch-Iohnsen B, Hentze MW, Marx JJ. Tolerable upper intakes for dietary iron set by the US Food and Nutrition Board (commentary). Am J Clin Nutr 2002;76:499-500. PubMed
  13. Tuomainen TP, Punnonen K, Nyyssonen K, Salonen JT. Association between body iron stores and the risk of acute myocardial infarction in men. Circulation 1998;97:1461-6.. PubMed
  14. Salonen JT, Nyyssonen K, Korpela H, et al. High stored iron levels are associated with excess risk of myocardial infarction in Eastern Finnish men. Circulation 1992;86:803-11.. PubMed
  15. Campbell NRC, Hasinoff B. Ferrous sulfate reduces levodopa bioavailability: Chelation as a possible mechanism. Clin Pharmacol Ther 1989;45:220-5.. PubMed
  16. Campbell NRC, Hasinoff BB, Stalts H, et al. Ferrous sulfate reduces thyroxine efficacy in patients with hypothyroidism. Ann Int Med 1992;117:1010-3.. PubMed
  17. Kiechl S, Willeit J, Egger G, et al. Body iron stores and the risk of carotid atherosclerosis: prospective results from the Bruneck study. Circulation 1997;96:3300-07. PubMed
  18. Comparison of oral iron supplements. Pharmacist's Letter / Prescriber's Letter 2008;24(8):240811.
  19. Tran T., Wax J. R., Philput C., Steinfeld J. D., Ingardia C. J. Intentional iron overdose in pregnancy--management and outcome. J Emerg Med 2000;18(2):225-228. PubMed
  20. Toblli J. E., Brignoli, R. Iron(III)-hydroxide polymaltose complex in iron deficiency anemia / review and meta-analysis. Arzneimittelforschung 2007;57(6A):431-438. PubMed
  21. Köpcke W., Sauerland M. C. Meta-analysis of efficacy and tolerability data on iron proteinsuccinylate in patients with iron deficiency anemia of different severity. Arzneimittelforschung 1995;45(11):1211-1216.
  22. Campbell N. R., Campbell R. R., Hasinoff B. B. Ferrous sulfate reduces methyldopa absorption: methyldopa: iron complex formation as a likely mechanism. Clin Invest Med 1990;13(6):329-332.
  23. Morii M., Ueno K., Ogawa A., Kato R., Yoshimura H., Wada K., Hashimoto H., Takada M., Tanaka K., Nakatani T., Shibakawa M. Impairment of mycophenolate mofetil absorption by iron ion. Clin Pharmacol Ther 2000;68(6):613-616. PubMed
  24. Gelone D. K., Park J. M., Lake K. D. Lack of an effect of oral iron administration on mycophenolic acid pharmacokinetics in stable renal transplant recipients. Pharmacotherapy 2007;27(9):1272-1278. PubMed
  25. Ducray P. S., Banken L., Gerber M., Boutouyrie B., Zandt H. Absence of an interaction between iron and mycophenolate mofetil absorption. Br J Clin Pharmacol 2006;62(4):492-495. PubMed
  26. Lorenz M., Wolzt M., Weigel G., Puttinger H., Hörl W. H., Födinger M., Speiser W., Sunder-Plassmann G. Ferrous sulfate does not affect mycophenolic acid pharmacokinetics in kidney transplant patients. Am J Kidney Dis 2004;43(6):1098-1103. PubMed
  27. Osman M. A., Patel R. B., Schuna A., Sundstrom W. R., Welling P. G. Reduction in oral penicillamine absorption by food, antacid, and ferrous sulfate. Clin Pharmacol Ther 1983;33(4):465-470. PubMed
  28. Michael, B., Coyne, D. W., Fishbane, S., Folkert, V., Lynn, R., Nissenson, A. R., Agarwal, R., Eschbach, J. W., Fadem, S. Z., Trout, J. R., Strobos, J., and Warnock, D. G. Sodium ferric gluconate complex in hemodialysis patients: adverse reactions compar
  29. Zhang, X., Ouyang, J., Wieczorek, R., and DeSoto, F. Iron medication-induced gastric mucosal injury. Pathol.Res Pract 2009;205(8):579-581. PubMed
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

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