Major interaction on record — check this product against your medications before combining. Based on 2 of 5 ingredients. Check your meds →
Dietary supplement

Carb Intercept with Phase 2 Carb Controller Ingredients & Drug Interactions

by Natrol

Carb Intercept with Phase 2 Carb Controller label
See full label image
Capsule Category: Botanical With Nutrients
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 Carb Intercept with Phase 2 Carb Controller 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

Carb Intercept with Phase 2 Carb Controller is a dietary supplement by Natrol with 5 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, 339 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Chromium, Calcium. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Carb Intercept with Phase 2 Carb Controller by Natrol

Ask about any prescription or over-the-counter medication and we check it for interactions with Carb Intercept with Phase 2 Carb Controller by Natrol — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Carb Intercept with Phase 2 Carb Controller by Natrol

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 12, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 2 of its 5 active ingredients.
  • “Phase 2 Carb Controller Complex” is a proprietary blend — the label gives one combined amount (1,000 mg) without saying how much of each component you get.

Carb Intercept contains five active ingredients. The product is built primarily on two forms of calcium—Calcium and Dibasic Calcium Phosphate—which work to support bone health and help regulate mineral balance.

It also includes two chromium sources: Chromium and Foodbound Chromium, which are minerals involved in blood sugar control. White Kidney Bean extract is included to support carbohydrate management, though we have no interaction data on file for that ingredient.

The remaining ingredients are inert substances (hypromellose, gum arabic, magnesium stearate, silicon dioxide, and maltodextrin) that form the capsule and help blend the actives.

Does it work?

Moderate 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
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: help control carbs and support weight management.
  • We looked for evidence on: Diabetes, Impaired glucose tolerance (Prediabetes), Obesity, Dyslipidemia, Hyperlipidemia, Metabolic syndrome — and 4 related terms.
  • The strongest evidence on file: Chromium is rated "Possibly Effective" for Diabetes (Natural Medicines).
  • Also on file: Calcium is rated "Possibly Ineffective" for Obesity.
  • Also on file: Chromium is rated "Possibly Ineffective" for Impaired glucose tolerance (Prediabetes).

Calcium in this product is rated Likely Effective for osteoporosis and Effective for a range of conditions including low blood calcium (hypocalcemia) and dyspepsia (acid reflux discomfort). Chromium is rated Possibly Effective for type 2 diabetes but Possibly Ineffective for prediabetes, high blood pressure, and schizophrenia.

The evidence for chromium deficiency is Likely Effective. White Kidney Bean extract effectiveness is not established in the data we hold.

The evidence, ingredient by ingredient Calcium Chromium

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.

Calcium is generally well tolerated at recommended doses, though high doses can cause problems. Common side effects from oral calcium include belching, constipation, diarrhea, bloating, and stomach upset.

Rare serious concerns include kidney stones and a serious condition called calciphylaxis. Some research suggests that very high calcium intake (over 2,000 mg daily from food or supplements) may be weakly linked to increased prostate cancer risk and possibly higher cardiovascular risk, though these findings are debated.

Chromium is also generally well tolerated at typical supplement doses, but high or long-term use may pose risks. Common side effects include gastrointestinal irritation, headaches, insomnia, mood changes, and rarely skin rashes.

Very rare cases of kidney or liver damage and blood disorders have been reported with high-dose chromium picolinate.

Side effects, ingredient by ingredient Calcium Chromium

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?
  • 2 of the 2 matched ingredients can interact with medications — Calcium, Chromium.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: diabetes medications; heart-rhythm medications; lithium.
  • For scale: 339 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, ask your pharmacist about: HIV integrase inhibitors (dolutegravir, elvitegravir), ceftriaxone (especially if given intravenously), thyroid medication (levothyroxine), heart rhythm or blood pressure drugs (diltiazem, sotalol), diabetes or insulin medications, NSAIDs (ibuprofen, naproxen) and aspirin, and calcipotriene (a psoriasis cream). Separate doses by at least 2–6 hours depending on the medication.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with some supporting evidence for its stated purpose. Major medication interactions have been identified, and safety information is well characterized.

This product is worth considering if you're looking to support bone health and steady blood sugar without taking multiple pills. However, if you take HIV medications (especially integrase inhibitors), thyroid medication, heart drugs, NSAIDs, or diabetes or insulin therapy, you need to run this past your pharmacist first—timing and spacing will likely matter.

Pregnant or nursing women should check with their doctor before adding extra calcium or chromium beyond what's in prenatal vitamins or food.

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

Assessment coverage: 4 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jul 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 Carb Intercept with Phase 2 Carb Controller, straight from the product label.

Brand Natrol
Barcode (UPC) 047469042912
Net contents 120 Veggie Capsule(s)
Market status On market
Date entered into DSLD Jul 23, 2020
DSLD ID 230435
Product type Botanical With Nutrients
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegetarian, Adult (18 - 50 Years)
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 Carb Intercept with Phase 2 Carb Controller by Natrol, 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 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
60
UPC/BARCODE
047469042912
IngredientAmount% DV
Calcium190 mg15%
Dibasic Calcium Phosphate0 NP--
White Kidney Bean extract0 NP--
Chromium40 mcg115%
Foodbound Chromium0 NP--
Phase 2 Carb Controller Complex1000 mg--

Other ingredients: Hypromellose, Gum Arabic, Magnesium Stearate, Silicon Dioxide, Maltodextrin

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.
Formula

Natrol Carb Intercept contains Phase 2, a patented and clinically tested non-stimulant all-natural white kidney bean extract shown to help control carbs by reducing the enzymatic digestion of dietary starches and delaying the digestion of carbs, which reduces the caloric impact of starchy foods.

White Kidney Bean Extract

General Statements

For detailed clinical studies, visit: www.phase2info.com A healthy calorie reduction diet and exercise regimen is essential for weight loss. The amount of weight loss varies by individual and is related to your diet, exercise, daily activities, age and body frame.

Precautions

Warning: Consult your healthcare professional prior to use if you have or suspect a medical condition, or are taking prescription drugs, or are pregnant or lactating.

Do not exceed 4 capsules per day.

Contains: Milk and Soy

Keep out of reach of children.

Brand IP Statement(s)

The trademarks Phase 2 Carb Controller and Foodbound are being used under license.

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.

Formulation

Weight Management Helps Control Carbs Helps Metabolize Fats

Vegetarian

No: Egg, Fish, Crustacean Shellfish, Tree Nuts, Peanuts, Wheat, Artificial Colors or Flavors, Added Sugar or Preservatives

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions: For optimal effect, take 2 capsules, immediately before starch-heavy meals. Do not exceed 4 capsules per day.

Storage

Store in a cool, dry place.

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

See for yourself

Carb Intercept with Phase 2 Carb Controller by Natrol label

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

Carb Intercept with Phase 2 Carb Controller 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 Carb Intercept with Phase 2 Carb Controller by Natrol

These are the 5 active ingredients this product is made of. Select any to open its full monograph.

Serving size2 Capsule(s) Dosage formCapsule Servings per container60 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
190 mg per serving Form: Dibasic Calcium 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

Chromium

Interacts with
178 drugs
40 mcg per serving Form: Foodbound Chromium

Chromium is an essential trace mineral involved in how the body handles sugar and fat. Some studies suggest it may modestly help blood sugar control i...

Chromium monograph & interactions

Phase 2 Carb Controller Complex

1000 mg per serving

Other (inactive) ingredients: Hypromellose, Gum Arabic, Magnesium Stearate, Silicon Dioxide, Maltodextrin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Carb Intercept with Phase 2 Carb Controller by Natrol Drug Interactions

Want to check YOUR meds against Carb Intercept with Phase 2 Carb Controller?

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
339Drugs
7 Major 229 Moderate 103 Minor

Ingredients driving the most interactions

Chromium 178
Calcium 168

Individual Drug Interactions

The ingredients in Carb Intercept with Phase 2 Carb Controller interact with 339 drugs. Click any drug to see the details.

2 of the 5 ingredients in Carb Intercept with Phase 2 Carb Controller interact with drugs. Each result below shows which ingredient is responsible. Chromium Calcium

Each ingredient & the kinds of drugs it affects

For each ingredient in Carb Intercept with Phase 2 Carb Controller 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.

Chromium5 drug types · 178 drugs

Antidiabetes Drugs

Theoretically, chromium may have additive effects with antidiabetic agents and increase the risk of hypoglycemia.
Some research shows that taking chromium might lower blood glucose levels, especially in patients with poorly controlled type 2 diabetes.

Likelihood Possible Evidence A
Insulin

Theoretically, concomitant use of chromium and insulin might increase the risk of hypoglycemia.
In clinical research, chromium has been shown to increase insulin sensitivity,

Likelihood Possible Evidence B
Levothyroxine (Synthroid, Others)

Chromium might bind levothyroxine in the intestinal tract and decrease levothyroxine absorption.
Clinical research in healthy volunteers shows that taking chromium picolinate 1000 mcg with levothyroxine 1 mg decreases serum levels of levothyroxine by 17% when compared to taking levothyroxine alone. Advise patients to take levothyroxine at least 30 minutes before or 3-4 hours after taking chromium.

Likelihood Probable Evidence B
Aspirin

Theoretically, aspirin might increase chromium absorption.
Animal research suggests that aspirin may increase chromium absorption and chromium levels in the blood.

Likelihood Possible Evidence D
Nonsteroidal Anti-Inflammatory Drugs (Nsaids)

NSAIDs might increase chromium levels in the body.
Drugs that are prostaglandin inhibitors, such as NSAIDs, seem to increase chromium absorption and retention.

Likelihood Possible Evidence D
Chromium 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
The maker

Brand information

Manufacturer and brand details for Carb Intercept with Phase 2 Carb Controller, from the product label.

Natrol

See all Natrol products
Name
Natrol LLC
City
Chatsworth
State
CA
ZipCode
91311
Phone Number
1-800-262-8765
Web Address
www.natrol.com
Pharmacist Counseling Corner

Carb Intercept with Phase 2 Carb Controller by Natrol: Common Questions

Does Carb Intercept with Phase 2 Carb Controller by Natrol interact with any medications?
Yes. Based on its ingredients, Carb Intercept with Phase 2 Carb Controller has a known interaction with 339 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?
Carb Intercept with Phase 2 Carb Controller contains 5 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.
Does this product actually help you lose weight or eat fewer carbs?
The product is designed to support carbohydrate management with ingredients like chromium (Possibly Effective for diabetes) and White Kidney Bean extract. But we don't have effectiveness data on file for the extract, and chromium's evidence for prediabetes is rated Possibly Ineffective. It's not a weight-loss pill—talk to your doctor about whether it fits your specific goals.
Can I take this if I have a sensitive stomach?
Calcium is a common cause of belching, constipation, and stomach upset. If you already have a touchy digestive system, start with the lowest recommended dose or split it across meals, and mention it to your pharmacist if problems don't settle in a week or two.
Is this safe to take during pregnancy?
Calcium is rated Likely Safe in pregnancy when you stick to recommended amounts—adequate calcium matters for both you and your baby. Chromium is rated Likely Safe or Possibly Safe in pregnancy from a balanced diet or prenatal vitamin, but extra supplement doses should be avoided unless your doctor recommends them. Talk with your doctor about what's right for you.
What if I'm diabetic and already taking insulin or blood sugar pills?
Chromium in this product can theoretically add to the effects of your diabetes medications and increase the risk of low blood sugar (hypoglycemia). This is a Moderate interaction. You absolutely need to check with your pharmacist or doctor before starting this, and you may need blood sugar monitoring or a dose adjustment.
Can I take this with my thyroid medication?
Both calcium and chromium can reduce how much levothyroxine (or other thyroid drugs) your body absorbs. Separate them by at least 4 hours if you're taking calcium, and chromium can lower thyroid levels by about 17%. Let your pharmacist know—you may need spacing instructions or blood work.
Are there any fillers or other junk in here?
The active ingredients are calcium, chromium, and White Kidney Bean extract. The product also contains inactive ingredients: hypromellose (a capsule material), gum arabic, magnesium stearate, silicon dioxide, and maltodextrin (a binder and flow agent). That's a standard supplement formulation—no unnecessary extras.

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

Not sure if Carb Intercept with Phase 2 Carb Controller is safe with your meds?

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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.

Carb Intercept with Phase 2 Carb Controller label
Go deeper

The Full Monographs Behind Carb Intercept with Phase 2 Carb Controller’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

Chromium

Interacts with 178 drugs

Chromium is an essential trace mineral involved in how the body handles sugar and fat. Some studies suggest it may modestly help blood sugar control in certain people with type 2 diabetes, b...

Read the full Chromium monograph →
Sources

Sources & How We Checked

Carb Intercept with Phase 2 Carb Controller'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 115 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
  20. Simoneau G. Absence of rebound effect with calcium carbonate. Eur J Drug Metab Pharmacokinet 1996;21:351-7. PubMed
  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
  22. Bourke JF, Mumford R, Whittaker P, et al. The effects of topical calcipotriol on systemic calcium homeostasis in patients with chronic plaque psoriasis. J Am Acad Dermatol 1997;37:929-34.
  23. Gueguen L, Pointillart A. The bioavailability of dietary calcium. J Am Coll Nutr 2000;19:119s-136s. 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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