Major interaction on record — check this product against your medications before combining. Check your meds →
Dietary supplement

Acidophilus with Citrus Pectin Ingredients & Drug Interactions

by Rugby

Acidophilus with Citrus Pectin label
See full label image
Other (e.g. Tea Bag) Category: Other Combinations
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Acidophilus with Citrus Pectin 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: Major

Acidophilus with Citrus Pectin is a dietary supplement by Rugby with 3 active ingredients. Its ingredients are commonly taken for bone health and osteoporosis prevention, dietary calcium deficiency, heartburn relief (calcium carbonate antacids).Based on those ingredients, 316 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are L-Acidophilus, Calcium, Citrus Pectin. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Acidophilus with Citrus Pectin by Rugby

Ask about any prescription or over-the-counter medication and we check it for interactions with Acidophilus with Citrus Pectin by Rugby — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Acidophilus with Citrus Pectin by Rugby

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

Partial disclosure
Ingredient Transparency · database check
Partial

Most active ingredients list an amount, but at least one is hidden in a blend or missing.

Why this rating?
  • The label discloses an exact amount for 2 of its 3 active ingredients.

This product contains three active ingredients. Calcium supports bone health and is effective for kidney failure, indigestion (dyspepsia), low blood calcium (hypocalcemia), high potassium levels (hyperkalemia), and osteoporosis.

Citrus pectin is a fiber from citrus fruit; it's possibly effective for high cholesterol but lacks strong evidence for blood sugar control or other uses. L-acidophilus is a live probiotic bacterium that's possibly effective for irritable bowel syndrome, certain infections, and antibiotic-related diarrhea.

The product also contains inactive ingredients—microcrystalline cellulose, maltodextrin, pharmaceutical glaze, croscarmellose sodium, stearic acid, magnesium stearate, silica, and magnesium silicate—which are fillers and binders.

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: Digestive health and intestinal balance.
  • We looked for evidence on: Antibiotic-associated diarrhea, Bacterial vaginosis, Clostridioides difficile infection, Constipation, Diarrhea, Dyspepsia — and 4 related terms.
  • The strongest evidence on file: Calcium is rated "Effective" for Dyspepsia (Natural Medicines).
  • Also on file: Lactobacillus Acidophilus is rated "Possibly Effective" for Antibiotic-associated diarrhea, Bacterial vaginosis, Irritable bowel syndrome (IBS).
  • Also on file: Pectin is rated "Insufficient Reliable Evidence To Rate" for Diarrhea, Irritable bowel syndrome (IBS), Peptic ulcers.

Calcium in this product is well-established for bone health and is effective for kidney disease, indigestion, low blood calcium, high potassium, and osteoporosis—it's likely effective for bone strength specifically. Citrus pectin has some evidence it may help lower cholesterol, though the proof is modest.

For blood sugar control and radiation exposure, the evidence we hold isn't strong enough to rate it either way. L-acidophilus shows modest promise for irritable bowel syndrome, H. pylori infection, antibiotic-associated diarrhea, and bacterial vaginosis, but the data aren't conclusive; it appears ineffective for atopic disease.

The evidence, ingredient by ingredient Calcium Pectin Lactobacillus Acidophilus

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 3 of the 3 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 3 of 3.
  • General safety write-ups exist for 3 of 3.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Calcium is generally well tolerated at recommended doses, though high amounts can cause constipation, diarrhea, bloating, and stomach upset. Rare concerns include kidney stones and calciphylaxis (calcium deposits in soft tissue).

There is some epidemiological data suggesting very high calcium intake—over 1500–2000 mg daily from all sources—might be linked to prostate cancer risk and cardiovascular concerns, though this research has limitations. Adequate calcium is important in pregnancy and breastfeeding; stay within recommended amounts and check with your doctor.

Citrus pectin from food is well tolerated; gastrointestinal side effects like gas, loose stools, and mild cramping are most common. Concentrated supplement amounts haven't been well studied in pregnancy or breastfeeding, so check with your provider.

Rare allergic reactions, including anaphylaxis, have been reported in sensitive people. L-acidophilus is generally well tolerated in healthy adults and children, though it may rarely cause abdominal discomfort, bloating, or mild rash.

Because it contains live organisms, there is a theoretical risk of infection in severely immunocompromised patients; ask your doctor before use.

Side effects, ingredient by ingredient Calcium Pectin Lactobacillus Acidophilus

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 3 of the 3 matched ingredients can interact with medications — Pectin, Calcium, Lactobacillus Acidophilus.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: heart-rhythm medications; lithium.
  • For scale: 316 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 this product, check whether you're on any HIV integrase inhibitors (dolutegravir, elvitegravir, raltegravir), the antibiotic ceftriaxone, levothyroxine for thyroid disease, sotalol for heart rhythm, calcipotriene for psoriasis, diltiazem for your heart, lovastatin for cholesterol, tetracycline antibiotics, or digoxin for heart failure. If you take antibiotics, separate them from this product by at least a few hours.

No interactions are documented for the specific formulation of this product as a whole, but the individual ingredients carry the interactions above.

Check your own medication Run your meds through the checker above

The bottom line

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

This product works best for people looking to support bone health and digestive function who don't take the medications listed above. If you're on any HIV drugs, thyroid medication, antibiotics, heart drugs, or cholesterol treatments, talk to your pharmacist or doctor first—the timing and spacing of doses matters.

Start with your exact medication list and check it against the tool on this page.

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 Apr 23, 2020.

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 Acidophilus with Citrus Pectin, straight from the product label.

Brand Rugby
Barcode (UPC) 005367180013
Net contents 100 Captab(s)
Market status On market
Date entered into DSLD Apr 23, 2020
DSLD ID 218796
Product type Other Combinations
Supplement form Other (e.g. Tea Bag)
Dietary claims / uses All Other
Intended target group(s) 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 Acidophilus with Citrus Pectin by Rugby, 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:
2 Caplet(s)
Maximum serving Sizes:
2 Caplet(s)
Servings per container
50
UPC/BARCODE
005367180013
IngredientAmount% DV
Calcium70 mg5%
Citrus Pectin200 mg--
L-Acidophilus0 NP--

Other ingredients: Microcrystalline Cellulose, Maltodextrin, Pharmaceutical Glaze, Croscarmellose Sodium, Stearic Acid, Magnesium Stearate, Silica, Magnesium Silicate

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.
FDA Statement of Identity

Dietary Supplement

Precautions

Tamper resistant - Do not use if imprinted safety seal under cap is broken or missing

As with any supplement, if you are pregnant, nursing, taking medications, or have a medical condition, consult your physician before use.

Contains: Milk and soy products.

Keep out of reach of children

Suggested/Recommended/Usage/Directions

Directions: Adults - Take two captabs, two to four times a day, as a dietary supplement or as directed by a doctor.

Formulation

Free of sugar, gluten, preservatives, yeast, artificial colors and flavors.

Formula

Sodium less than 1 mg per captab.

Storage

To preserve quality and freshness, keep bottle tightly closed. Store unopened container at room temperature in a dry place. Refrigerating after opening may prolong the life of the active cultures and is recommended, though not required.

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

See for yourself

Acidophilus with Citrus Pectin by Rugby label

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

Acidophilus with Citrus Pectin 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 Acidophilus with Citrus Pectin by Rugby

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

Serving size2 Caplet(s) Dosage formOther (e.g. Tea Bag) Servings per container50 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.

Calcium

Interacts with
168 drugs
70 mg per serving Form: Calcium Carbonate, Dicalcium Phosphate

Calcium is an essential mineral your body needs for strong bones, nerve signaling, and muscle function, and supplements can help fill gaps when diet f...

Calcium monograph & interactions

Citrus Pectin

Interacts with
23 drugs
200 mg per serving

Pectin is a natural soluble fiber found in fruits like apples and citrus, and it is widely used in foods and as a fiber supplement. It may modestly he...

Citrus Pectin monograph & interactions

L-Acidophilus

Interacts with
182 drugs
0 NP per serving

Lactobacillus acidophilus is a 'friendly' bacterium used as a probiotic to support gut and vaginal health. It is generally well tolerated in healthy p...

L-Acidophilus monograph & interactions

Other (inactive) ingredients: Microcrystalline Cellulose, Maltodextrin, Pharmaceutical Glaze, Croscarmellose Sodium, Stearic Acid, Magnesium Stearate, Silica, Magnesium Silicate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Acidophilus with Citrus Pectin by Rugby Drug Interactions

Want to check YOUR meds against Acidophilus with Citrus Pectin?

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
316Drugs
7 Major 291 Moderate 18 Minor

Ingredients driving the most interactions

L-Acidophilus 182
Calcium 168
Citrus Pectin 23

Individual Drug Interactions

The ingredients in Acidophilus with Citrus Pectin interact with 316 drugs. Click any drug to see the details.

3 of the 3 ingredients in Acidophilus with Citrus Pectin interact with drugs. Each result below shows which ingredient is responsible. L-Acidophilus Calcium Citrus Pectin

Each ingredient & the kinds of drugs it affects

For each ingredient in Acidophilus with Citrus Pectin 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.

L-Acidophilus1 drug type · 182 drugs

Antibiotic Drugs

Theoretically, taking Lactobacillus acidophilus with antibiotic drugs might decrease the effectiveness of L. acidophilus.
L. acidophilus preparations usually contain live and active organisms. Therefore, simultaneously taking antibiotics might kill a significant number of the organisms. Tell patients to separate administration of antibiotics and L. acidophilus preparations by at least two hours.

Likelihood Probable Evidence D
L-Acidophilus full monograph & interactions

Calcium18 drug types · 168 drugs

Ceftriaxone (Rocephin)

Co-administration of intravenous calcium and ceftriaxone can result in precipitation of a ceftriaxone-calcium salt in the lungs and kidneys.
Avoid administering intravenous calcium in any form, such as parenteral nutrition or Lactated Ringers, within 48 hours of intravenous ceftriaxone. Case reports in neonates show that administering intravenous ceftriaxone and calcium can result in precipitation of a ceftriaxone-calcium salt in the lungs and kidneys. In several cases, neonates have died as a result of this interaction. So far there are no reports in adults; however, there is still concern that this interaction might occur in adults.

Likelihood Probable Evidence D
Dolutegravir (Tivicay)

Calcium seems to reduce levels of dolutegravir.
Advise patients to take dolutegravir either 2 hours before or 6 hours after taking calcium supplements. Pharmacokinetic research suggests that taking calcium carbonate 1200 mg concomitantly with dolutegravir 50 mg reduces plasma levels of dolutegravir by almost 40%. Calcium appears to decrease levels of dolutegravir through chelation.

Likelihood Probable Evidence B
Elvitegravir (Vitekta)

Calcium seems to reduce levels of elvitegravir.
Advise patients to take elvitegravir either 2 hours before or 2 hours after taking calcium supplements. Pharmacokinetic research suggests that taking calcium along with elvitegravir can reduce blood levels of elvitegravir through chelation.

Likelihood Probable Evidence B
Aluminum

Calcium citrate might increase aluminum absorption and toxicity. Other types of calcium do not increase aluminum absorption.
Calcium citrate can increase the absorption of aluminum when taken with aluminum hydroxide. The increase in aluminum levels may become toxic, particularly in individuals with kidney disease. However, the effect of calcium citrate on aluminum absorption is due to the citrate anion rather than calcium cation. Calcium acetate does not appear to increase aluminum absorption.

Likelihood Possible Evidence B
Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)

Calcium 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 calcium 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, calcium containing products.

Likelihood Probable Evidence D
Bisphosphonates

Calcium reduces the absorption of bisphosphonates.
Advise patients to take bisphosphonates at least 30 minutes before calcium, but preferably at a different time of day. Calcium supplements decrease absorption of bisphosphonates.

Likelihood Probable Evidence C
Calcipotriene (Dovonex)

Taking calcipotriene with calcium might increase the risk for hypercalcemia.
Calcipotriene is a vitamin D analog used topically for psoriasis. It can be absorbed in sufficient amounts to cause systemic effects, including hypercalcemia. Theoretically, combining calcipotriene with calcium supplements might increase the risk of hypercalcemia.

Likelihood Possible Evidence B
Digoxin (Lanoxin)

Using intravenous calcium with digoxin might increase the risk of fatal cardiac arrhythmias.
Hypercalcemia increases the risk of fatal cardiac arrhythmias with digoxin. However, one retrospective analysis of clinical data suggests that intravenous calcium does not increase the risk of dysrhythmias or mortality in patients receiving digoxin.

Likelihood Possible Evidence B
Diltiazem (Cardizem, Others)

Theoretically, calcium may reduce the therapeutic effects of diltiazem.
Hypercalcemia can reduce the effectiveness of verapamil in atrial fibrillation. Theoretically, calcium might increase this risk of hypercalcemia and reduce the effectiveness of diltiazem.

Likelihood Probable Evidence D
Levothyroxine (Synthroid, Others)

Calcium seems to reduce the absorption and effectiveness of levothyroxine.
Advise patients to take levothyroxine and calcium supplements at least 4 hours apart. Calcium reduces levothyroxine absorption, probably by forming insoluble complexes. Calcium carbonate supplements reduce effectiveness of levothyroxine in patients with hypothyroidism.

Likelihood Probable Evidence B
Lithium

Theoretically, concomitant use of calcium and lithium may increase this risk of hypercalcemia.
Clinical research suggests that long-term use of lithium may cause hypercalcemia in 10% to 60% of patients. Theoretically, concomitant use of lithium and calcium supplements may further increase this risk.

Likelihood Possible Evidence B
Quinolone Antibiotics

Calcium seems to reduce the absorption of quinolone antibiotics.
Advise patients to take oral quinolones at least 2 hours before or 4-6 hours after calcium supplements or calcium-fortified foods. Taking calcium at the same time as oral quinolones can reduce quinolone absorption. Calcium binds to quinolones in the gut.

Likelihood Probable Evidence B
Raltegravir (Isentress)

Calcium may reduce levels of raltegravir.
Pharmacokinetic research shows that taking a single dose of calcium carbonate 3000 mg along with raltegravir 400 mg twice daily modestly decreases the mean area under the curve of raltegravir, but the decrease does not necessitate a dose adjustment of raltegravir. However, a case of elevated HIV-1 RNA levels and documented resistance to raltegravir has been reported for a patient taking calcium carbonate 1 gram three times daily plus vitamin D3 (cholecalciferol) 400 IU three times daily in combination with raltegravir 400 mg twice daily for 11 months. It is thought that calcium reduced raltegravir levels by chelation, leading to treatment failure.

Likelihood Possible Evidence B
Sotalol (Betapace)

Calcium seems to reduce the absorption of sotalol.
Advise patients to separate doses by at least 2 hours before or 4-6 hours after calcium. Calcium appears to reduce the absorption of sotalol, probably by forming insoluble complexes.

Likelihood Possible Evidence B
Tetracycline Antibiotics

Calcium seems to reduce the absorption of tetracycline antibiotics.
Advise patients to take oral tetracyclines at least 2 hours before, or 4-6 hours after calcium supplements. Taking calcium at the same time as oral tetracyclines can reduce tetracycline absorption. Calcium binds to tetracyclines in the gut.

Likelihood Probable Evidence C
Thiazide Diuretics

Taking calcium along with thiazides might increase the risk of hypercalcemia and renal failure.
Thiazides reduce calcium excretion by the kidneys. Using thiazides along with moderately large amounts of calcium carbonate increases the risk of milk-alkali syndrome (hypercalcemia, metabolic alkalosis, renal failure). Patients may need to have their serum calcium levels and/or parathyroid function monitored regularly.

Likelihood Probable Evidence C
Verapamil (Calan, Others)

Theoretically, calcium may reduce the therapeutic effects of verapamil.
Hypercalcemia can reduce the effectiveness of verapamil in atrial fibrillation. Theoretically, use of calcium supplements may increase this risk of hypercalcemia and reduce the effectiveness of verapamil.

Likelihood Probable Evidence D
Calcium Channel Blockers

Intravenous calcium may decrease the effects of calcium channel blockers; oral calcium is unlikely to have this effect.
Intravenous calcium is used to decrease the effects of calcium channel blockers in the management of overdose. Intravenous calcium gluconate has been used before intravenous verapamil (Isoptin) to prevent or reduce the hypotensive effects without affecting the antiarrhythmic effects. But there is no evidence that dietary or supplemental calcium when taken orally interacts with calcium channel blockers.

Likelihood Unlikely Evidence D
Calcium full monograph & interactions

Citrus Pectin3 drug types · 23 drugs

Digoxin (Lanoxin)

Theoretically, pectin might reduce the absorption of digoxin, potentially decreasing its effectiveness.
A small clinical study shows that taking digoxin with a kaolin-pectin suspension reduces the absorption of digoxin by about 62%. It is unclear if these effects are due to pectin, kaolin, or the combination.

Likelihood Possible Evidence B
Lovastatin (Mevacor)

Theoretically, pectin might reduce the absorption of lovastatin, potentially decreasing its effectiveness.
Case reports suggest that concomitant use of pectin and lovastatin might reduce the cholesterol-lowering effect of lovastatin, possibly due to reduced intestinal absorption of lovastatin.

Likelihood Possible Evidence D
Tetracycline Antibiotics

Theoretically, pectin might reduce the absorption of tetracycline antibiotics, potentially decreasing their effectiveness.
A small clinical study shows that taking tetracycline with bismuth subsalicylate in a kaolin-pectin suspension reduces the absorption of tetracycline by about 34%. It is unclear if these effects are due to pectin, kaolin, bismuth subsalicylate, or the combination.

Likelihood Possible Evidence B
Citrus Pectin full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Acidophilus with Citrus Pectin, from the product label.

Rugby

See all Rugby products
Name
Rugby Laboratories
Street Address
17177 N Laurel Park Drive, Suite 233
City
Livonia
State
MI
ZipCode
48152
Phone Number
1-800-645-2158
Web Address
www.rugbylaboratories.com
Pharmacist Counseling Corner

Acidophilus with Citrus Pectin by Rugby: Common Questions

Does Acidophilus with Citrus Pectin by Rugby interact with any medications?
Yes. Based on its ingredients, Acidophilus with Citrus Pectin has a known interaction with 316 medications, including 7 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Acidophilus with Citrus Pectin 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.
Will this help my digestion and gut health?
The L-acidophilus may help with irritable bowel syndrome and antibiotic-related diarrhea based on available evidence, though the proof isn't rock-solid. Citrus pectin may aid cholesterol levels. That said, if you're taking antibiotics, you'll want to space them out from this product so the live organisms don't get killed off.
Can I take this if I'm pregnant or breastfeeding?
Calcium is important in pregnancy and breastfeeding—adequate amounts are safe as long as you stay within recommended doses. Citrus pectin from food is fine, but concentrated supplements haven't been well studied in these periods, so ask your doctor. L-acidophilus is likely safe in pregnancy but data are limited for breastfeeding, so check with your provider.
What side effects should I expect?
The most common ones are digestive: constipation, diarrhea, bloating, gas, and stomach upset. Allergic reactions to pectin are rare but possible in sensitive people. Because L-acidophilus is live, there's a theoretical risk of infection if your immune system is very weak—talk to your doctor if that applies to you.
Is there a concern with taking high doses of calcium?
At recommended amounts, calcium is safe. But very high doses can cause problems. Some research suggests intakes over 1500–2000 mg daily from all sources may be linked to prostate cancer and heart disease risk, though these studies have limitations. Stick to the recommended amount and ask your pharmacist if you're uncertain.
What's the difference between this and just eating calcium-rich foods?
Food is a good source of calcium, but this supplement lets you get a measured dose in one product. The downside is supplements are more concentrated, which means higher doses are easier to take—and that's where the rare serious risks show up. Food amounts are generally safer.
Can I take this at the same time as my other medications?
Not always—it depends on what you take. Calcium especially needs spacing from thyroid drugs, heart medications, and HIV treatments. Use the medication checker on this page with your exact prescription list before you start.

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.

Acidophilus with Citrus Pectin label
Go deeper

The Full Monographs Behind Acidophilus with Citrus Pectin’s Ingredients

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

Herb & supplement monograph

Calcium

Interacts with 168 drugs

Calcium is an essential mineral your body needs for strong bones, nerve signaling, and muscle function, and supplements can help fill gaps when diet falls short. Most people do best getting...

Read the full Calcium monograph → Herb & supplement monograph

Pectin

Interacts with 23 drugs

Pectin is a natural soluble fiber found in fruits like apples and citrus, and it is widely used in foods and as a fiber supplement. It may modestly help with cholesterol, blood sugar, and di...

Read the full Pectin monograph → Herb & supplement monograph

Lactobacillus Acidophilus

Interacts with 182 drugs

Lactobacillus acidophilus is a 'friendly' bacterium used as a probiotic to support gut and vaginal health. It is generally well tolerated in healthy people, and there is reasonable evidence...

Read the full Lactobacillus Acidophilus monograph →
Sources

Sources & How We Checked

Acidophilus with Citrus Pectin'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 88 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.

Calcium 62 references
  1. Shils M, Olson A, Shike M. Modern Nutrition in Health and Disease. 8th ed. Philadelphia, PA: Lea and Febiger, 1994.
  2. Hernandez-Avila M, Gonzalez-Cossio T, Hernandez-Avila JE, et al. Dietary calcium supplements to lower blood lead levels in lactating women: a randomized placebo-controlled trial. Epidemiology 2003;14:206-12.. PubMed
  3. Thys-Jacobs S, Ceccarelli S, Bierman A, et al. Calcium supplementation in premenstrual syndrome: a randomized crossover trial. J Gen Intern Med 1989;4:183-9. PubMed
  4. Maton PN, Burton ME. Antacids revisited: a review of their clinical pharmacology and recommended therapeutic use. Drugs 1999;57:855-70.
  5. Clemens JD, Feinstein AR. Calcium carbonate and constipation: a historical review of medical mythopoeia. Gastroenterology 1977;72:957-61. DOI
  6. Saunders D, Sillery J, Chapman R. Effect of calcium carbonate and aluminum hydroxide on human intestinal function. Dig Dis Sci 1988;33:409-13. PubMed
  7. Friedman PA, Bushinsky DA. Diuretic effects on calcium metabolism. Semin Nephrol 1999;19:551-6.
  8. Koo WK, Walters JC, Esterlitz J, et al. Maternal calcium supplementation and fetal bone mineralization. Obstet Gynecol 1999;94:577-82. DOI
  9. Raman L, Rajalakshmi K, Krishnamachari KAVR, et al. Effect of calcium supplementation to undernourished mothers during pregnancy on the bone density of the neonates. Am J Clin Nutr 1978; 31:466-9. DOI
  10. Murry JJ, Healy MD. Drug-mineral interactions: a new responsibility for the hospital dietician. J Am Diet Assoc 1991;91:66-73.
  11. Chan JM, Giovannucci E, Andersson SO, et al. Dairy products, calcium, phosphorous, vitamin D, and risk of prostate cancer. Cancer Causes Control 1998;9:559-66.
  12. Butner LE, Fulco PP, Feldman G, et al. Calcium carbonate-induced hypothyroidism. Ann Intern Med 2000:132:595. PubMed
  13. Schneyer CR. Calcium carbonate and reduction of levothyroxine efficacy. JAMA 1998;279:750. PubMed
  14. Moser LR, Smythe MA, Tisdale JE. The use of calcium salts in the prevention and management of verapamil-induced hypotension. Ann Pharmacother 2000;34:622-9. PubMed
  15. Singh N, Singh PN, Hershman JM. Effect of calcium carbonate on the absorption of levothyroxine. JAMA 2000;283:2822-5. PubMed
  16. Kahela P, Anttila M, Tikkanen R, Sundquist H. Effect of food, food constituents and fluid volume on the bioavailability of sotalol. Acta Pharmacol Toxicol (Copenh) 1979;44:7-12.. PubMed
  17. Pletz MW, Petzold P, Allen A, et al. Effect of calcium carbonate on bioavailability of orally administered gemifloxacin. Antimicrob Agents Chemother 2003;47:2158-60.. PubMed
  18. Bar-Or D, Yoel G. Calcium and calciferol antagonize effect of verapamil in atrial fibrillation. Br Med J 1981;282:1585-6.
  19. Decktor DL, Robinson M, Maton PN, et al. Effects of aluminum/magnesium hydroxide and calcium carbonate on esophageal and gastric pH in subjects with heartburn. Am J Ther 1995;2:546-52. PubMed
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  21. Peters ML, Leonard M, Licata AA. Role of alendronate and risedronate in preventing and treating osteoporosis. Cleve Clin J Med 2001;68:945-51. PubMed
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Pectin 11 references
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See these in context on the Pectin monograph →

Lactobacillus Acidophilus 15 references
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See these in context on the Lactobacillus Acidophilus monograph →

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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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