Major interaction on record — check this product against your medications before combining. Based on 4 of 6 ingredients. Check your meds →
Dietary supplement

Focus & Memory Ingredients & Drug Interactions

by GNC Preventive Nutrition

Focus & Memory label
See full label image
Capsule Category: Other Combinations
Most serious interaction: Major
Clinical methodology reviewed by · Updated Oct 7, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Focus & Memory 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

Focus & Memory is a dietary supplement by GNC Preventive Nutrition with 6 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, 1,159 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Indian Frankincense Gum Resin Extract, American Ginseng Root Extract, 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 Focus & Memory by GNC Preventive Nutrition

Ask about any prescription or over-the-counter medication and we check it for interactions with Focus & Memory by GNC Preventive Nutrition — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Focus & Memory by GNC Preventive Nutrition

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 Oct 8, 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 4 of its 6 active ingredients.
  • “Nutricog” is listed as a grouped ingredient — the label gives one combined amount (300 mg) without saying how much of each component you get.
  • “American Ginseng Root Extract” is listed as a grouped ingredient — the label gives one combined amount (200 mg) without saying how much of each component you get.

The active ingredients include calcium, ginsenosides, alpha-glycerylphosphorylcholine (alpha-GPC), Indian frankincense gum resin extract (Boswellia serrata), Chebulic Myrobalan fruit extract, Nutricog, American ginseng root extract, and Melon Fruit Pulp Concentrate. Calcium is a mineral for bone and general body function.

Alpha-GPC is a choline compound studied for memory and brain health. Boswellia is a plant gum resin extract studied mainly for joint comfort.

The capsule also contains inactive ingredients such as microcrystalline cellulose, gelatin, mannitol, calcium carbonate, magnesium stearate, and silicon dioxide. These are fillers, binders, and capsule materials, not active ingredients.

Does it work?

Insufficient 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
Insufficient

There isn't enough reliable clinical evidence to rate this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: Improve cognition and enhance working memory.
  • We looked for evidence on: Cognitive function, Working memory, Memory, Mental focus, Cognitive performance.
  • The closest evidence on file: Boswellia Serrata is rated "Insufficient Reliable Evidence To Rate" for Cognitive function (Natural Medicines).
  • Also on file: Alpha-gpc is rated "Insufficient Reliable Evidence To Rate" for Cognitive function.

Ratings differ by ingredient and by condition. Calcium is rated Effective for kidney failure, dyspepsia, hypocalcemia, and hyperkalemia, and Likely Effective for osteoporosis.

Boswellia is rated Possibly Effective for osteoarthritis. Alpha-GPC is rated Possibly Effective for Alzheimer disease.

For cognitive function, the evidence is rated Insufficient Reliable Evidence To Rate, so the data we hold does not establish that this product helps everyday memory.

The evidence, ingredient by ingredient Calcium Alpha-gpc Boswellia Serrata American Ginseng

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 amounts, but high doses can cause problems. Common effects include belching, constipation, diarrhea, and stomach upset.

Rare serious concerns include calciphylaxis and kidney stones, and some epidemiological data links very high intakes to prostate cancer risk. Alpha-GPC is generally well tolerated in studies, but long-term safety is not fully established.

Boswellia is generally well tolerated short term, though quality and dose vary widely between products. Pregnancy data is mixed or missing: our records include both a likely safe and a possibly unsafe rating for calcium, a safety note advising Boswellia be avoided during pregnancy, and no pregnancy entry at all for alpha-GPC.

Talk with your own doctor or pharmacist about your situation.

Side effects, ingredient by ingredient Calcium Alpha-gpc Boswellia Serrata American Ginseng

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 — Boswellia Serrata, Calcium, Alpha-gpc.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: immunosuppressants / transplant drugs; heart-rhythm medications; lithium.
  • For scale: 1,087 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.

Double-check any HIV integrase inhibitor, such as dolutegravir or elvitegravir, which carries a Major interaction with calcium. Also review raltegravir, levothyroxine, sotalol, calcipotriene, diltiazem, and immunosuppressants, which carry Moderate interactions, plus drugs cleared by CYP liver enzymes.

Scopolamine carries a Minor interaction with alpha-GPC. Use the search tool on this page to check your exact medications, and confirm with your own doctor or pharmacist before combining.

Check your own medication Run your meds through the checker above

The bottom line

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

This product may suit adults looking for calcium and a few plant and choline ingredients, if their medications don't conflict. People taking HIV integrase inhibitors, levothyroxine, sotalol, diltiazem, immunosuppressants, or other drugs listed above should be especially careful.

Pregnant or breastfeeding people should talk with their own doctor or pharmacist before use, since the safety data is mixed. Review this with your own doctor or pharmacist before starting.

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

Assessment coverage: 3 of 6 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Oct 24, 2024.

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 Focus & Memory, straight from the product label.

Brand GNC Preventive Nutrition
Barcode (UPC) 048107241797
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Oct 24, 2024
DSLD ID 315306
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten 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 Focus & Memory by GNC Preventive Nutrition, 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
30
UPC/BARCODE
048107241797
IngredientAmount% DV
Calcium40 mg3%
Ginsenosides20 mg--
Alpha-Glycerylphosphorylcholine200 mg--
Indian Frankincense Gum Resin Extract0 NP--
Chebulic Myrobalan fruit extract0 NP--
Nutricog300 mg--
American Ginseng Root Extract200 mg--
Melon Fruit Pulp Concentrate, Powder10 mg--

Other ingredients: Microcrystalline Cellulose, Gelatin, Mannitol, Calcium Carbonate, Maltodextrin, Corn Starch, Vegetable Oil, Hydrogenated, Magnesium Hydroxide, Magnesium Stearate, Silicon Dioxide, Sodium Carboxymethylcellulose

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.
Precautions

Keep out of reach of children.

Warning: Cancer and reproductive harm - www.P65Warnings.ca.gov Discontinue use two weeks prior to surgery.

Consult your physician prior to using this product if you are pregnant, nursing, taking medication or have a medical condition.

Storage

Store in a cool, dry place.

General Statements

For More Information: 1-888-462-2548, GNC.com

60 Capsules/30 Day Supply Learn more

Brand IP Statement(s)

CEREBOOST (American Ginseng Root Extract) is a trademark of Naturex SA. Extramel (Melon Fruit Pulp Extact) is a trademark of BIONOV. Nutricog is a trademark of PLT Health Solutions-Laila Nutraceuticals LLC.

Formula

Improve cognition with clinically studied Nutricog & Cereboost

Formulation

Expert formulated Enhance working memory Improve response to cognitive demand Feel the difference

Caffeine free

Gluten free.

FDA Statement of Identity

Dietary Supplement

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.

Suggested/Recommended/Usage/Directions

Directions: As a dietary supplement, take two capsules per day with water.

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

See for yourself

Focus & Memory by GNC Preventive Nutrition label

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

Focus & Memory 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 Focus & Memory by GNC Preventive Nutrition

These are the 6 active ingredients this product is made of. Select any to open its full monograph.

Serving size2 Capsule(s) Dosage formCapsule Servings per container30 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
40 mg per serving

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

Alpha-Glycerylphosphorylcholine

Interacts with
16 drugs
200 mg per serving Form: L-Alpha-Glycerylphosphorylcholine

Alpha-GPC is a choline-containing compound used mainly for memory, brain health, and as a choline source. There is some evidence it may help cognition...

Alpha-Glycerylphosphorylcholine monograph & interactions

Nutricog

300 mg per serving

American Ginseng Root Extract

Interacts with
217 drugs
200 mg per serving

American ginseng is an herbal root used as an 'adaptogen' to support energy, stress, immune function, and blood sugar. Some uses—such as reducing the...

American Ginseng Root Extract monograph & interactions
  • › Ginsenosides

Melon Fruit Pulp Concentrate, Powder

10 mg per serving

Other (inactive) ingredients: Microcrystalline Cellulose, Gelatin, Mannitol, Calcium Carbonate, Maltodextrin, Corn Starch, Vegetable Oil, Hydrogenated, Magnesium Hydroxide, Magnesium Stearate, Silicon Dioxide, Sodium Carboxymethylcellulose. These complete the product’s ingredient list but are not active constituents.

Interaction report

Focus & Memory by GNC Preventive Nutrition Drug Interactions

Want to check YOUR meds against Focus & Memory?

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
1,159Drugs
9 Major 1,140 Moderate 10 Minor

Ingredients driving the most interactions

Indian Frankincense Gum Resin Extract 954
American Ginseng Root Extract 217
Calcium 168
Alpha-Glycerylphosphorylcholine 16

Individual Drug Interactions

The ingredients in Focus & Memory interact with 1,159 drugs. Click any drug to see the details.

4 of the 6 ingredients in Focus & Memory interact with drugs. Each result below shows which ingredient is responsible. Indian Frankincense Gum Resin Extract American Ginseng Root Extract Calcium Alpha-Glycerylphosphorylcholine

Each ingredient & the kinds of drugs it affects

For each ingredient in Focus & Memory 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.

Indian Frankincense Gum Resin Extract6 drug types · 954 drugs

Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, Boswellia serrata might increase the levels of CYP1A2 substrates.
In vitro research shows that Boswellia serrata gum resin inhibits CYP1A2 enzymes.

Likelihood Possible Evidence D
Cytochrome P450 2C19 (Cyp2C19) Substrates

Theoretically, Boswellia serrata might increase the levels of CYP2C19 substrates.
In vitro research shows that Boswellia serrata gum resin inhibits CYP2C19 enzymes.

Likelihood Possible Evidence D
Cytochrome P450 2C9 (Cyp2C9) Substrates

Theoretically, Boswellia serrata might increase the levels of CYP2C9 substrates.
In vitro research shows that Boswellia serrata gum resin inhibits CYP2C9 enzymes.

Likelihood Possible Evidence D
Cytochrome P450 2D6 (Cyp2D6) Substrates

Theoretically, Boswellia serrata might increase the levels of CYP2D6 substrates.
In vitro research shows that Boswellia serrata gum resin inhibits CYP2D6 enzymes.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, Boswellia serrata might increase or decrease the levels and clinical effects of CYP3A4 substrates.
In vitro research shows that Boswellia serrata gum resin inhibits CYP3A4 enzymes. Other in vitro research shows that Boswellia serrata extract inhibits CYP3A4 enzymes at most concentrations, although it may modestly induce enzyme activity at low concentrations.

Likelihood Possible Evidence D
Immunosuppressants

Theoretically, Boswellia serrata might alter the effects of immunosuppressive drugs.
Some in vitro research suggests that Boswellia serrata extracts might inhibit mediators of autoimmune disorders such as leukotrienes and reduce production of antibodies and cell-mediated immunity. However, other in vitro research suggests that, when coupled with calcium ions, boswellic acids containing the keto group have immunostimulant properties within specific cell signaling pathways.

Likelihood Possible Evidence D
Indian Frankincense Gum Resin Extract full monograph & interactions

American Ginseng Root Extract4 drug types · 217 drugs

Warfarin (Coumadin)

American ginseng seems to decrease the effectiveness of warfarin therapy.
Healthy patients receiving warfarin 5 mg daily, who also take American ginseng 1 gram twice daily, seem to have a significantly reduced international normalized ratio (INR).

Likelihood Likely Evidence B
Antidiabetes Drugs

Theoretically, taking American ginseng with antidiabetes drugs might increase the risk of hypoglycemia.
American ginseng seems to lower postprandial blood glucose. Theoretically, concomitant use with antidiabetes drugs might enhance blood glucose lowering effects and possibly cause hypoglycemia.

Likelihood Probable Evidence B
Immunosuppressants

Theoretically, American ginseng use might interfere with immunosuppressive therapy.
American ginseng seems to stimulate immune function. Theoretically, American ginseng might decrease the effectiveness of immunosuppressant drugs.

Likelihood Possible Evidence D
Monoamine Oxidase Inhibitors (Maois)

Theoretically, American ginseng can interfere with MAOI therapy.
There is one case report of insomnia, headache, and tremors when an unspecified ginseng product was used with phenelzine (Nardil), an MAOI. There is also one case report of hypomania when an unspecified ginseng product was used with phenelzine. Theoretically, American ginseng may interfere with MAOI therapy.

Likelihood Possible Evidence D
American Ginseng Root Extract 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

Alpha-Glycerylphosphorylcholine1 drug type · 16 drugs

Scopolamine (Transderm Scop)

Theoretically, alpha-GPC might decrease the effects of scopolamine.
A small clinical study shows that alpha-GPC can partially counteract the attention and memory impairment effects caused by scopolamine given intramuscularly. Whether alpha-GPC can decrease the beneficial anti-motion sickness effects of the scopolamine patch (Transderm Scop) is unclear.

Likelihood Possible Evidence B
Alpha-Glycerylphosphorylcholine full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Focus & Memory, from the product label.

GNC Preventive Nutrition

See all GNC Preventive Nutrition products
Name
GNC Holdings, LLC
City
Pittsburgh
State
PA
ZipCode
15222
Phone Number
1-888-462-2548
Web Address
GNC.com
Pharmacist Counseling Corner

Focus & Memory by GNC Preventive Nutrition: Common Questions

Does Focus & Memory by GNC Preventive Nutrition interact with any medications?
Yes. Based on its ingredients, Focus & Memory has a known interaction with 1,159 medications, including 9 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Focus & Memory contains 6 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.
Is this product safe to take while pregnant?
The data is mixed. Our records include both a likely safe and a possibly unsafe pregnancy rating for calcium, and a safety note advises avoiding Boswellia during pregnancy. Talk with your own doctor or pharmacist for advice about your situation.
What are the side effects of alpha-GPC?
Oral alpha-GPC has been rarely associated with dizziness, excitation, headache, insomnia, diarrhea, heartburn, nausea, vomiting, and skin rash. Use for at least 2 months has also been linked to an elevated risk of stroke compared with shorter use.
Does this product help with memory?
Our data rates the evidence for cognitive function as Insufficient Reliable Evidence To Rate, so we can't establish a memory benefit. Alpha-GPC is rated Possibly Effective only for Alzheimer disease.
What is Boswellia used for in this product?
Boswellia serrata is studied mainly for joint comfort. Its rating for osteoarthritis is Possibly Effective, and our data is insufficient for its other listed uses.

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.

Focus & Memory label
Go deeper

The Full Monographs Behind Focus & Memory’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

Alpha-gpc

Interacts with 16 drugs

Alpha-GPC is a choline-containing compound used mainly for memory, brain health, and as a choline source. There is some evidence it may help cognition in people with dementia, but evidence i...

Read the full Alpha-gpc monograph → Herb & supplement monograph

Boswellia Serrata

Interacts with 954 drugs

Boswellia serrata is a tree resin used in traditional medicine, mainly for joint pain and inflammation. Some studies suggest it may help with osteoarthritis symptoms, but the overall evidenc...

Read the full Boswellia Serrata monograph → Herb & supplement monograph

American Ginseng

Interacts with 217 drugs

American ginseng is an herbal root used as an 'adaptogen' to support energy, stress, immune function, and blood sugar. Some uses—such as reducing the chance or length of colds and modestly l...

Read the full American Ginseng monograph →
Sources

Sources & How We Checked

Focus & Memory'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 94 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
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American Ginseng 12 references
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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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