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Dietary supplement

Alpha-Lipoic Acid 600 mg Ingredients & Drug Interactions

by Protocol For Life Balance

Alpha-Lipoic Acid 600 mg label
See full label image
Capsule Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Alpha-Lipoic Acid 600 mg against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

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

The interaction bottom line Most serious interaction: Moderate

Alpha-Lipoic Acid 600 mg is a dietary supplement by Protocol For Life Balance with 3 active ingredients. Its ingredients are commonly taken for flavoring and culinary use, digestive complaints like bloating and indigestion, boosting absorption of other supplements.Based on those ingredients, 1,089 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Bioperine, Grape Seed Extract, Alpha-Lipoic Acid. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Alpha-Lipoic Acid 600 mg by Protocol For Life Balance

Ask about any prescription or over-the-counter medication and we check it for interactions with Alpha-Lipoic Acid 600 mg by Protocol For Life Balance — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Alpha-Lipoic Acid 600 mg by Protocol For Life Balance

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

From our pharmacy team — supplement deep dive

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

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

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

This product contains three active ingredients. Alpha-lipoic acid is an antioxidant compound made naturally in your body; it's the main active here at 600 mg per capsule.

Bioperine is a concentrated extract of black pepper that contains piperine, a compound that can affect how your body absorbs and clears other substances. Grape seed extract is a polyphenol-rich concentrate from grape seeds, traditionally used for circulation support.

The three inactive ingredients are hypromellose (a capsule material), calcium laurate, and silicon dioxide.

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: Neural health and antioxidant support.
  • We looked for evidence on: Diabetic neuropathy, Chemotherapy-induced peripheral neuropathy, Neuropathic pain, Cognitive function, Age-related cognitive decline, Nerve protection — and 2 related terms.
  • The strongest evidence on file: Alpha-lipoic Acid is rated "Possibly Effective" for Diabetic neuropathy (Natural Medicines).
  • Also on file: Grape is rated "Insufficient Reliable Evidence To Rate" for Cognitive function.
  • Also on file: Alpha-lipoic Acid is rated "Insufficient Reliable Evidence To Rate" for Age-related cognitive decline, Chemotherapy-induced peripheral neuropathy, Neuropathic pain.

Alpha-lipoic acid is rated possibly effective for three uses: diabetic nerve pain (neuropathy), high cholesterol (hyperlipidemia), and weight management (obesity). For the other ingredients in this product, the evidence we hold shows insufficient or mixed results.

Bioperine (black pepper) lacks reliable evidence for hay fever, asthma, athletic performance, headache, depression, or diarrhea. Grape seed extract shows possibly ineffective ratings for chemotherapy nausea and vomiting, hay fever, and obesity.

If you're considering this product for a specific health goal, talk to your pharmacist about what the research actually supports for your situation.

The evidence, ingredient by ingredient Black Pepper Alpha-lipoic Acid Grape

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.

Alpha-lipoic acid is generally well tolerated but carries two important cautions. It can lower blood sugar and is best used only under medical guidance, especially if you have diabetes or take diabetes medications.

Safety data during pregnancy and breastfeeding is insufficient — the safety data advises against use in both cases, so talk with your doctor or pharmacist before taking it if you're pregnant or nursing. Common oral side effects are headache, heartburn, nausea, and vomiting; skin rash and itching have also been reported.

Bioperine (black pepper) is generally well tolerated at food amounts or as a single dose, though concentrated supplements warrant caution. The most common effects are a burning aftertaste, heartburn, and reduced taste perception; cough has been reported when inhaled.

Rare allergic reactions are possible. Grape seed extract is generally well tolerated; common effects include abdominal pain, diarrhea, dry mouth, heartburn, headache, joint pain, and nausea.

Rare anaphylaxis to grape skin has been reported.

Side effects, ingredient by ingredient Black Pepper Alpha-lipoic Acid Grape

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

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

Why this rating?
  • 3 of the 3 matched ingredients can interact with medications — Grape, Alpha-lipoic Acid, Black Pepper.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; cancer treatments; diabetes medications; lithium.
  • For scale: 1,090 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 with your pharmacist if you take any heart or blood pressure medications (especially propranolol), seizure drugs (especially phenytoin), thyroid hormones, blood thinners or antiplatelet drugs, chemotherapy, diabetes medications, cyclosporine (an immunosuppressant), theophylline (for asthma or COPD), or any drug metabolized by your liver's cytochrome P450 enzymes — a group that includes many common prescriptions. The interactions are Moderate severity, meaning they could meaningfully change how your medications work or increase side effects.

Check your own medication Run your meds through the checker above

The bottom line

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

This product may help with diabetic nerve pain, high cholesterol, or weight loss, though evidence is modest. The main concern is that two of its three ingredients — especially bioperine and grape seed extract — interact with a broad range of medications, from heart and seizure drugs to blood thinners and chemotherapy.

If you take any prescription medications, particularly those for your heart, seizures, thyroid, blood pressure, diabetes, or cancer, run them through the checker on this page before you start. Talk to your pharmacist or doctor if you're pregnant, nursing, or have diabetes.

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

Assessment coverage: 3 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Mar 25, 2025.

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 Alpha-Lipoic Acid 600 mg, straight from the product label.

Brand Protocol For Life Balance
Barcode (UPC) 707359130463
Net contents 60 Veg Capsule(s)
Market status On market
Date entered into DSLD Mar 25, 2025
DSLD ID 326498
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Halal, Gluten Free, Dairy 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 Alpha-Lipoic Acid 600 mg by Protocol For Life Balance, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Veg Capsule(s)
Maximum serving Sizes:
1 Veg Capsule(s)
Servings per container
60
UPC/BARCODE
707359130463
IngredientAmount% DV
Bioperine5 mg--
Alpha-Lipoic Acid600 mg--
Grape Seed Extract30 mg--

Other ingredients: Hypromellose, Calcium Laurate, Silicon Dioxide

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.
Suggested/Recommended/Usage/Directions

Suggested usage: Take 1 capsule daily, preferably with a meal, or as directed by your healthcare practitioner.

Formula

How it works: Alpha-lipoic acid (ALA) is a versatile free radical scavenger that helps to maintain neural health by promoting nerve cell glutathione production, preserving optimal blood flow, and supporting normal nerve cell glucose utilization. ALA may help to support the maintenance of healthy neural tissues, proper glucose metabolism, and normal cardiovascular function. Bioperine is a standardized pepper extract that is known to enhance the bioavailability of some nutrients.

Alpha-Lipoic Acid With grape seed extract & Bioperine

Halal

Precautions

Cautions/interactions: Alpha-lipoic acid supplementation may interact with certain medications, especially anti-diabetes drugs. If you are taking any medications or if you are at risk for thiamin deficiency, or if you have a thyroid condition, consult your healthcare practitioner before using this product.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

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

Free radical scavenger

Non-GMO

Vegetarian/vegan

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut or sesame ingredients.

Natural color variation may occur in this product.

FDA Statement of Identity

A Dietary Supplement

Brand IP Statement(s)

Bioperine is a registered trademark of Sabinsa Corporation.

Storage

Store in a cool, dry place after opening.

Seals/Symbols

Halal

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

See for yourself

Alpha-Lipoic Acid 600 mg by Protocol For Life Balance label

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

Alpha-Lipoic Acid 600 mg 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 Alpha-Lipoic Acid 600 mg by Protocol For Life Balance

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

Serving size1 Veg 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.

Bioperine

Interacts with
1,019 drugs
5 mg per serving Form: Black Pepper Fruit Extract

Black pepper is a common kitchen spice that is generally safe in the amounts used in food. Its extract, piperine, is mostly added to supplements to he...

Bioperine monograph & interactions

Alpha-Lipoic Acid

Interacts with
263 drugs
600 mg per serving

Alpha-lipoic acid (ALA) is an antioxidant made naturally by the body and found in small amounts in foods. It is most studied for diabetic nerve pain,...

Alpha-Lipoic Acid monograph & interactions

Grape Seed Extract

Interacts with
910 drugs
30 mg per serving Form: Polyphenols

Grapes and grape products like grape seed extract contain antioxidant compounds such as resveratrol and proanthocyanidins that may support heart and b...

Grape Seed Extract monograph & interactions

Other (inactive) ingredients: Hypromellose, Calcium Laurate, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

Alpha-Lipoic Acid 600 mg by Protocol For Life Balance Drug Interactions

Want to check YOUR meds against Alpha-Lipoic Acid 600 mg?

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
1,089Drugs
1,061 Moderate 28 Minor

Ingredients driving the most interactions

Bioperine 1,019
Grape Seed Extract 910
Alpha-Lipoic Acid 263

Individual Drug Interactions

The ingredients in Alpha-Lipoic Acid 600 mg interact with 1,089 drugs. Click any drug to see the details.

3 of the 3 ingredients in Alpha-Lipoic Acid 600 mg interact with drugs. Each result below shows which ingredient is responsible. Bioperine Grape Seed Extract Alpha-Lipoic Acid

Each ingredient & the kinds of drugs it affects

For each ingredient in Alpha-Lipoic Acid 600 mg 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.

Bioperine17 drug types · 1,019 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, black pepper might increase the risk of bleeding when taken with antiplatelet or anticoagulant drugs.
In vitro research shows that piperine, a constituent of black pepper, seems to inhibit platelet aggregation. This has not been reported in humans.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, black pepper might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal research shows that piperine, a constituent of black pepper, can reduce blood glucose levels. Monitor blood glucose levels closely. Dose adjustments might be necessary.

Likelihood Possible Evidence D
Atorvastatin (Lipitor)

Theoretically, black pepper might increase blood levels of atorvastatin.
Animal research shows that taking piperine, a constituent of black pepper, 35 mg/kg can increase the maximum serum concentration of atorvastatin three-fold. This has not been reported in humans.

Likelihood Possible Evidence D
Cyclosporine (Neoral, Sandimmune)

Theoretically, black pepper might increase the effects and side effects of cyclosporine.
In vitro research shows that piperine, a constituent of black pepper, increases the bioavailability of cyclosporine. This has not been reported in humans.

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

Theoretically, black pepper might increase levels of drugs metabolized by CYP2D6.
In vitro research suggests that some constituents of black pepper inhibit CYP2D6. This has not been reported in humans.

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

Theoretically, black pepper might increase levels of drugs metabolized by CYP3A4.
In vitro research and pharmacokinetic simulation data suggest that piperine, a constituent of black pepper, as well as the pepper fruit seem to inhibit CYP3A4. This has not been reported in humans.

Likelihood Possible Evidence D
Lithium

Theoretically, black pepper might increase blood levels of lithium due to its diuretic effects. The dose of lithium might need to be reduced.
Black pepper is thought to have diuretic properties.

Likelihood Probable Evidence D
Nevirapine (Viramune)

Black pepper might increase blood levels of nevirapine.
Clinical research shows that piperine, a constituent of black pepper, increases the plasma concentration of nevirapine. However, no adverse effects were observed in this study.

Likelihood Probable Evidence D
P-Glycoprotein Substrates

Theoretically, black pepper might increase levels of P-glycoprotein substrates.
In vitro research shows that piperine, a constituent of black pepper, seems to inhibit P-glycoprotein.

Likelihood Possible Evidence D
Pentobarbital (Nembutal)

Theoretically, black pepper might increase the sedative effects of pentobarbital.
Animal research shows that piperine, a constituent of black pepper, increases pentobarbital-induced sleeping time.

Likelihood Possible Evidence D
Phenytoin (Dilantin)

Black pepper might increase blood levels of phenytoin.
Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption, slow elimination, and increase levels of phenytoin. Taking a single dose of black pepper 1 gram along with phenytoin seems to double the serum concentration of phenytoin. Consuming a soup with black pepper providing piperine 44 mg/200 mL of soup along with phenytoin also seems to increase phenytoin levels when compared with consuming the same soup without black pepper.

Likelihood Possible Evidence B
Propranolol (Inderal)

Black pepper might increase blood levels of propranolol.
Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption and slow elimination of propranolol.

Likelihood Possible Evidence B
Rifampin (Rifadin)

Black pepper might increase blood levels of rifampin.
Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption and serum levels of rifampin.

Likelihood Possible Evidence B
Theophylline

Black pepper might increase blood levels of theophylline.
Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption and slow elimination of theophylline.

Likelihood Possible Evidence D
Amoxicillin (Amoxil, Trimox)

Theoretically, black pepper might increase the effects and side effects of amoxicillin.
Animal research shows that taking piperine, a constituent of black pepper, with amoxicillin increases plasma levels of amoxicillin. This has not been reported in humans.

Likelihood Possible Evidence D
Carbamazepine (Tegretol)

Theoretically, black pepper might increase blood levels of carbamazepine, potentially increasing the effects and side effects of carbamazepine.
One clinical study in patients taking carbamazepine 300 mg or 500 mg twice daily shows that taking a single 20 mg dose of purified piperine, a constituent of black pepper, increases carbamazepine levels. Piperine may increase carbamazepine absorption by increasing blood flow to the GI tract, increasing the surface area of the small intestine, or inhibiting cytochrome P450 3A4 (CYP3A4) in the gut wall. Absorption was significantly increased by 7-10 mcg/mL/hour. The time to eliminate carbamazepine was also increased by 4-8 hours. Although carbamazepine levels were increased, this did not appear to increase side effects. In vitro research also shows that piperine can increase carbamazepine levels by 11% in a time-dependent manner.

Likelihood Possible Evidence B
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, black pepper might decrease levels and clinical effects of drugs metabolized by CYP1A2.
In vitro research suggests that black pepper induces CYP1A2. This has not been reported in humans.

Likelihood Possible Evidence D
Bioperine full monograph & interactions

Grape Seed Extract9 drug types · 910 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, grape extracts may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
In vitro evidence suggests that grape extracts might decrease platelet aggregation.

Likelihood Possible Evidence D
Cyclosporine (Neoral, Sandimmune)

Ingesting grape juice with cyclosporine can reduce cyclosporine absorption.
A small pharmacokinetic study in healthy young adults shows that intake of purple grape juice 200 mL along with cyclosporine can decrease the absorption of cyclosporine by up to 30% when compared with water. Separate doses of grape juice and cyclosporine by at least 2 hours to avoid this interaction.

Likelihood Possible Evidence B
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, grape juice might reduce the levels of CYP1A2 substrates.
A small pharmacokinetic study in healthy adults shows that ingestion of 200 mL of grape juice decreases phenacetin plasma levels. This is thought to be due to induction of CYP1A2.

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

Theoretically, grape seed extract may increase the levels of CYP2D6 substrates.
In vitro evidence suggests that grape seed extract might inhibit CYP2D6 enzymes. However, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2E1 (Cyp2E1) Substrates

Theoretically, grape seed extract might increase the levels of CYP2E1 substrates.
In vitro and animal research suggests that grape seed proanthocyanidin extract inhibits CYP2E1 enzymes. However, this interaction has not been reported in humans.

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

It is unclear if grape seed extract inhibits or induces CYP3A4; research is conflicting.
In vitro evidence suggests that grape seed extract might inhibit CYP3A4 enzymes. However, evidence from animal research shows that grape seed extract may induce CYP3A4 in the liver. So far, these interactions have not been reported in humans.

Likelihood Possible Evidence D
Midazolam (Versed)

Theoretically, long-term intake of grape seed extract might decrease the effects of midazolam.
Animal research shows that subchronic ingestions of grape seed extract can increase the elimination of intravenous midazolam by increasing hepatic CYP3A4 activity. Single doses of grape seed extract do not appear to affect midazolam elimination.

Likelihood Possible Evidence D
Phenacetin

Grape juice might decrease phenacetin absorption.
A small pharmacokinetic study in healthy adults shows that ingestion of 200 mL of grape juice decreases phenacetin plasma levels. This is thought to be due to induction of cytochrome P450 1A2 (CYP1A2).

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

It is unclear if grape juice or grape seed extract inhibits CYP2C9; research is conflicting.
In vitro evidence shows that grape seed extract or grape juice might inhibit CYP2C9 enzymes. However, a small pharmacokinetic study in healthy adults shows that drinking 8 ounces of grape juice once does not affect the clearance of flurbiprofen, a probe-drug for CYP2C9 metabolism. The effects of continued grape juice consumption are unclear.

Likelihood Unlikely Evidence D
Grape Seed Extract full monograph & interactions

Alpha-Lipoic Acid5 drug types · 263 drugs

Alkylating Agents

Theoretically, the antioxidant effects of alpha-lipoic acid might alter the effectiveness of alkylating agents.
The use of antioxidants like alpha-lipoic acid during chemotherapy is controversial. There are concerns that antioxidants could reduce the activity of chemotherapy drugs that generate free radicals. However, some researchers theorize that antioxidants might make chemotherapy more effective by reducing oxidative stress that might interfere with apoptosis (cell death) of cancer cells. More evidence is needed to determine what effect, if any, antioxidants such as alpha-lipoic acid have on chemotherapy. Advise patients to consult their oncologist before using alpha-lipoic acid.

Likelihood Possible Evidence D
Anticoagulant/Antiplatelet Drugs

Theoretically, alpha-lipoic acid may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
In vitro, alpha-lipoic acid inhibits platelet aggregation.

Likelihood Possible Evidence D
Antitumor Antibiotics

Theoretically, the antioxidant effects of alpha-lipoic acid might alter the effectiveness of antitumor antibiotics.
The use of antioxidants like alpha-lipoic acid during chemotherapy is controversial. There are concerns that antioxidants could reduce the activity of antitumor antibiotic drugs, which work by generating free radicals. However, some researchers theorize that antioxidants might make chemotherapy more effective by reducing oxidative stress that might interfere with apoptosis (cell death) of cancer cells. More evidence is needed to determine what effect, if any, antioxidants such as alpha-lipoic acid have on chemotherapy involving antitumor antibiotics. Advise patients to consult their oncologist before using alpha-lipoic acid.

Likelihood Possible Evidence D
Thyroid Hormone

Theoretically, alpha-lipoic acid might decrease the effects of thyroid hormone drugs.
Animal research suggests that co-administration of thyroxine with alpha-lipoic acid reduces conversion into the active T3 form.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, taking alpha-lipoic acid with antidiabetes drugs might increase the risk of hypoglycemia.
Although some small clinical studies have suggested that alpha-lipoic acid can lower blood glucose levels, larger clinical studies in patients with diabetes have shown no clinically meaningful effect. Additionally, co-administration of single doses of alpha-lipoic acid and glyburide or acarbose did not cause detectable drug interactions in healthy volunteers.

Likelihood Unlikely Evidence B
Alpha-Lipoic Acid full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Alpha-Lipoic Acid 600 mg, from the product label.

Protocol For Life Balance

See all Protocol For Life Balance products
Name
Protocol For Life Balance
Street Address
395 S. Glen Ellyn Rd.
City
Bloomingdale
State
IL
ZipCode
60108
Web Address
protocolforlife.com
Pharmacist Counseling Corner

Alpha-Lipoic Acid 600 mg by Protocol For Life Balance: Common Questions

Does Alpha-Lipoic Acid 600 mg by Protocol For Life Balance interact with any medications?
Yes. Based on its ingredients, Alpha-Lipoic Acid 600 mg has a known interaction with 1,089 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Alpha-Lipoic Acid 600 mg 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.
Can I take this if I'm pregnant or breastfeeding?
The facts show insufficient safety data for alpha-lipoic acid in pregnancy and breastfeeding, and the safety guidance advises against it in both. Grapes as food are fine, but concentrated grape supplements lack enough safety information while breastfeeding. Talk with your doctor or pharmacist for personalized advice before using this product if you're pregnant or nursing.
What are the most common side effects?
From alpha-lipoic acid: headache, heartburn, nausea, and vomiting. From Bioperine (black pepper): a burning aftertaste, heartburn, and reduced taste perception. From grape seed extract: abdominal pain, diarrhea, dry mouth, heartburn, headache, joint pain, and nausea. Most people tolerate it without problems.
Does this product actually work?
Alpha-lipoic acid — the main ingredient — is rated possibly effective for diabetic nerve pain, high cholesterol, and weight management. The other two ingredients lack reliable evidence for the conditions listed on the label. Results vary, and evidence is modest.
Can it lower my blood sugar?
Alpha-lipoic acid can theoretically lower blood sugar further if you already take diabetes medications, though larger studies haven't shown a clinically meaningful effect. If you have diabetes or take diabetes drugs, talk to your pharmacist or doctor before starting this product.
Why does this product have three different ingredients?
Alpha-lipoic acid is the primary active ingredient for the health claims (nerve pain, cholesterol, weight). Bioperine enhances absorption of other compounds in the digestive tract. Grape seed extract adds antioxidant and circulatory support. Together, they're meant to work complementarily, though the data supporting this combination is limited.
Is black pepper safe in this supplement form?
Black pepper is safe as a food spice, but concentrated supplements like Bioperine should be used more cautiously and ideally under medical advice. At food amounts it's fine, but supplement-strength piperine safety isn't as well studied.

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.

Alpha-Lipoic Acid 600 mg label
Go deeper

The Full Monographs Behind Alpha-Lipoic Acid 600 mg’s Ingredients

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

Herb & supplement monograph

Black Pepper

Interacts with 1,019 drugs

Black pepper is a common kitchen spice that is generally safe in the amounts used in food. Its extract, piperine, is mostly added to supplements to help the body absorb other ingredients (li...

Read the full Black Pepper monograph → Herb & supplement monograph

Alpha-lipoic Acid

Interacts with 263 drugs

Alpha-lipoic acid (ALA) is an antioxidant made naturally by the body and found in small amounts in foods. It is most studied for diabetic nerve pain, where some evidence suggests it may help...

Read the full Alpha-lipoic Acid monograph → Herb & supplement monograph

Grape

Interacts with 910 drugs

Grapes and grape products like grape seed extract contain antioxidant compounds such as resveratrol and proanthocyanidins that may support heart and blood vessel health. While the food is he...

Read the full Grape monograph →
Sources

Sources & How We Checked

Alpha-Lipoic Acid 600 mg'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 111 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.

Black Pepper 29 references
  1. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  2. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  3. Bano G, Amla V, Raina RK, et al. The effect of piperine on pharmacokinetics of phenytoin in healthy volunteers. Planta Med 1987;53:568-9. PubMed
  4. Bano G, et al. Effect of piperine on bioavailability and pharmacokinetics of propranolol and theophylline in healthy volunteers. Eur J Clin Pharmacol 1991;41;615-7. PubMed
  5. Cohle SD, Trestrail JD III, Graham MA, et al. Fatal pepper aspiration. Am J Dis Child 1988;142:633-6. PubMed
  6. Bhardwaj RK, Glaeser H, Becquemont L, et al. Piperine, a major constituent of black pepper, inhibits human P-glycoprotein and CYP3A4. J Pharmacol Exp Ther 2002;302:645-50. PubMed
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Grape 34 references
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See these in context on the Grape monograph →

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