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Dietary supplement

Forskolin+ Lean with Black Pepper Extract Ingredients & Drug Interactions

by Purely Inspired

Forskolin+ Lean with Black Pepper Extract label
See full label image
Capsule Category: Botanical
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Forskolin+ Lean with Black Pepper Extract 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

Forskolin+ Lean with Black Pepper Extract is a dietary supplement by Purely Inspired with 4 active ingredients. Its ingredients are commonly taken for constipation, diarrhea, high cholesterol.Based on those ingredients, 2,177 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Dietary Fiber, Black Pepper Fruit Extract, Coleus root extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Forskolin+ Lean with Black Pepper Extract by Purely Inspired

Ask about any prescription or over-the-counter medication and we check it for interactions with Forskolin+ Lean with Black Pepper Extract by Purely Inspired — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Forskolin+ Lean with Black Pepper Extract by Purely Inspired

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 4 of its 4 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

Forskolin+ Lean contains 3 active ingredients. Green coffee bean extract brings caffeine and other coffee compounds.

Black pepper fruit extract supplies piperine, which may enhance absorption of other substances. Coleus root extract provides forskolin, the ingredient that gives the product its name.

The capsule itself is made from inactive ingredients including microcrystalline cellulose (a binder), hypromellose (a capsule material), titanium dioxide (a colorant), purified water, carrageenan (a thickener), and potassium chloride.

Does it work?

Not established
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
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use.

Why this rating?
  • The label markets this product for: weight management and lean body composition.
  • We looked for evidence on: Obesity, Athletic performance, Metabolic syndrome, Body composition, Fat loss, Weight loss.
  • The closest evidence on file: Black Psyllium is rated "Insufficient Reliable Evidence To Rate" for Obesity (Natural Medicines).
  • Also on file: Black Pepper is rated "Insufficient Reliable Evidence To Rate" for Athletic performance, Obesity.
  • Also on file: Coffee is rated "Insufficient Reliable Evidence To Rate" for Obesity, Metabolic syndrome.

Evidence for green coffee bean extract is strongest for mental alertness — that's likely effective — and weaker but still present for Parkinson disease, heart failure, diabetes, and overall mortality (all possibly effective). Black pepper extract hasn't been reliably studied for the conditions listed in the data we hold: hay fever, asthma, athletic performance, headache, depression, and diarrhea all show insufficient evidence.

Coleus root extract similarly lacks reliable evidence for angina, asthma, cancer, congestive heart failure, eczema, and dry eye. If you're considering this product for a specific health goal, talk with your pharmacist about what the science actually supports.

The evidence, ingredient by ingredient Black Psyllium Coffee Black Pepper Coleus

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 4 of the 4 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 4 of 4.
  • General safety write-ups exist for 4 of 4.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Green coffee bean extract (caffeine) is generally well tolerated in moderate amounts for healthy adults, though high doses can trigger agitation, anxiety, chest pain, headache, insomnia, nervousness, heart palpitations, ringing in the ears, and vomiting — these effects increase with more caffeine and are more likely in children and older adults. Chronic heavy use can lead to dependence and withdrawal symptoms.

Rarely, caffeine can cause anaphylaxis in sensitive people. Black pepper extract is well tolerated at food-spice amounts and in single doses as a medicine; the most common side effects are a burning aftertaste, indigestion, and reduced taste.

Allergic reactions are rare but possible. Coleus root is generally well tolerated but can cause constipation, diarrhea, nausea, or vomiting — diarrhea appears in about 10% of users taking oral coleus.

Regarding pregnancy: limit caffeine and discuss safe amounts with your doctor. Caffeine passes into breast milk; keep intake low and watch for fussiness or sleep problems in your baby.

The safety data advises against coleus during pregnancy and while breastfeeding — not enough information exists.

Side effects, ingredient by ingredient Black Psyllium Coffee Black Pepper Coleus

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?
  • 4 of the 4 matched ingredients can interact with medications — Black Psyllium, Black Pepper, Coffee, Coleus.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; diabetes medications; heart-rhythm medications; lithium.
  • For scale: 2,178 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.

Check these medication types before taking this product. Major severity: nitrates and calcium channel blockers (can drop blood pressure dangerously), and ephedrine or ephedrine-containing products (risk of heart attack, stroke, or seizure).

Moderate severity: blood pressure medications, blood thinners (especially warfarin), antiseizure drugs (especially lamotrigine and phenytoin), antipsychotics (especially clozapine), antidepressants (especially fluvoxamine), acid reflux medications (cimetidine), alcohol-use medications (disulfiram), heart medications (dipyridamole, theophylline, propranolol), antifungals or antiretrovirals (cyclosporine, nevirapine, rifampin), sleeping pills (pentobarbital), and any medication metabolized by your liver's CYP2C9 or CYP3A4 enzymes — ask your pharmacist if yours are. If you're unsure, run your medications through the checker below.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Major medication interactions have been identified, and safety information is well characterized.

If you're a healthy adult not taking blood pressure medications, heart drugs, anticonvulsants, antipsychotics, blood thinners, or other prescription medications that interact with caffeine or these herbal extracts, this product may be worth trying. Anyone on prescription medications — especially for the heart, blood pressure, seizures, or psychiatric conditions — needs to check their exact drugs against the interaction tool on this page before starting.

Talk with your pharmacist or doctor first if you're pregnant, breastfeeding, or have any chronic health conditions.

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

Assessment coverage: 4 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Sep 25, 2023.

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 Forskolin+ Lean with Black Pepper Extract, straight from the product label.

Brand Purely Inspired
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Sep 25, 2023
DSLD ID 293804
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Women (not pregnant or lactating), 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 Forskolin+ Lean with Black Pepper Extract by Purely Inspired, 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
IngredientAmount% DV
Total Carbohydrates1 Gram(s)1%
Dietary Fiber1 Gram(s)4%
Green Coffee Bean Extract200 mg--
Black Pepper Fruit Extract5.3 mg--
Coleus root extract250 mg--

Other ingredients: Microcrystalline Cellulose, Hypromellose, Titanium Dioxide, Water, Purified, Carrageenan, Potassium Chloride

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.
General Statements

America's #1 fastest growing supplement brand Based on AC Nielsen xAOC sales data comparing dollar sales percent growth vs. previous 52 weeks ending October 5, 2019 (Top 10 brands including pills/liquid, excluding Private Label brands, Diet RTDs, bars and MRPs). New

We believe quality supplementation is a basic human right, though sometimes it can feel out of reach. By providing clean and simple formulations at affordable pricing, high-quality supplementation can be accessible to all. 18 years and above.

Find us on Facebook @PurelyInspiredNutrition Instagram @PurelyInspiredNutrition For more information, visit us at PurelyInspired.com

Formula

250 mg coleus extract 200 mg green coffee Black pepper extract

Ingredients you can trust Every serving includes: 250 mg of Coleus forkskohlii extract. 200 mg of the key weight loss ingredient green coffee extract. 5.3 mg of black pepper extract.

250mg of Coleus extract, providing forskolin

Formulation

Lose weight with green coffee

Non-stimulant Non GMO

Healthy & effective weight loss Supports a healthy weight loss plan, which always includes a calorie-reduced diet and regular exercise. Take twice daily for non-stimulant weight loss support.

Scientifically Researched Weight Loss Key Ingredient Key ingredient backed by 2 scientific studies Study 1 Key weight loss ingredient green coffee 10.95 lbs. lost Placebo 5.40 lbs. lost Subjects taking the key ingredient (green coffee) for 60 days lost an average of 10.95 lbs. versus the placebo group, which lost an average of 5.40 lbs. Both groups followed a low-calorie diet. In a separate 8-week study, subjects taking green coffee lost an average of 3.7 lbs. versus the placebo group, which lost 1.25 lbs. Both groups followed a calorie-reduced diet and performed moderate exercise.

Gluten free & vegan friendly

Gluten free & vegan friendly

100% quality commitment

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions: Take 1 serving (2 capsules) with a glass of water twice daily, 30 to 60 minutes before your 2 largest meals. For best results, use for 60 days in combination with a calorie-reduced diet and exercise. Read the entire label before use and follow directions provided.

Precautions

Do not use if pregnant or nursing.

Warning: For adult use only. Keep out of reach of children.

Discontinue use two weeks prior to surgery. Do not use if you have heart and/or blood pressure, sleep or anxiety disorders, or a gastric ulcer. Consult a medical doctor if you have a medical condition or before starting any diet or exercise program. Do not use if packaging has been tampered with.

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.

Storage

Store in a cool, dry place (60 degrees fahrenheit to 80 degrees fahrenheit).

Brand IP Statement(s)

Copyright 2020

Purely Inspired Well-being for all

Seals/Symbols

Made in the USA from international ingredients

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

See for yourself

Forskolin+ Lean with Black Pepper Extract by Purely Inspired label

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

Forskolin+ Lean with Black Pepper Extract 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 Forskolin+ Lean with Black Pepper Extract by Purely Inspired

These are the 4 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.

Dietary Fiber

Interacts with
2,025 drugs
1 Gram(s) per serving

Black psyllium is a soluble-fiber supplement made from the seeds of a Plantago plant, used mostly to ease constipation and support digestive health. I...

Dietary Fiber monograph & interactions

Green Coffee Bean Extract

Interacts with
591 drugs
200 mg per serving Form: Coffea canephora robusta

Coffee is a widely consumed beverage made from roasted coffee beans, valued mainly for its caffeine, which boosts alertness and energy. For most healt...

Green Coffee Bean Extract monograph & interactions

Black Pepper Fruit Extract

Interacts with
1,019 drugs
5.3 mg per serving Form: Piperine

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...

Black Pepper Fruit Extract monograph & interactions

Coleus root extract

Interacts with
915 drugs
250 mg per serving Form: Coleus forskohlii, Forskolin

Coleus is a plant from the mint family whose root contains a compound called forskolin, often marketed for weight loss, asthma, and heart health. Whil...

Coleus root extract monograph & interactions

Other (inactive) ingredients: Microcrystalline Cellulose, Hypromellose, Titanium Dioxide, Water, Purified, Carrageenan, Potassium Chloride. These complete the product’s ingredient list but are not active constituents.

Interaction report

Forskolin+ Lean with Black Pepper Extract by Purely Inspired Drug Interactions

Want to check YOUR meds against Forskolin+ Lean with Black Pepper Extract?

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
2,177Drugs
37 Major 1,212 Moderate 928 Minor

Ingredients driving the most interactions

Dietary Fiber 2,025
Black Pepper Fruit Extract 1,019
Coleus root extract 915
Green Coffee Bean Extract 591

Individual Drug Interactions

The ingredients in Forskolin+ Lean with Black Pepper Extract interact with 2,177 drugs. Click any drug to see the details.

4 of the 4 ingredients in Forskolin+ Lean with Black Pepper Extract interact with drugs. Each result below shows which ingredient is responsible. Dietary Fiber Black Pepper Fruit Extract Coleus root extract Green Coffee Bean Extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Forskolin+ Lean with Black Pepper Extract 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.

Dietary Fiber7 drug types · 2,025 drugs

Carbamazepine (Tegretol)

Theoretically, black psyllium might reduce the effects of carbamazepine and increase the risk for convulsions.
Theoretically, black psyllium might reduce carbamazepine absorption. A preliminary study using blond psyllium reported decreased carbamazepine bioavailability due to binding of the drug to psyllium, as well as reduction of available fluid in the gut for dissolution of the drug. This interaction may also occur with black psyllium.

Likelihood Probable Evidence D
Lithium

Theoretically, taking black psyllium at the same time as lithium might reduce lithium absorption.
The fiber in black psyllium might reduce lithium absorption and plasma levels. Some case reports describe a reduction in plasma lithium levels with concomitant administration of blond psyllium. This was reversed when psyllium was stopped. This interaction may also occur with black psyllium.

Likelihood Probable Evidence D
Metformin (Glucophage)

Theoretically, black psyllium might increase the therapeutic and adverse effects of metformin.
Animal research shows that concurrent consumption of blond psyllium with metformin slows and increases the absorption of metformin. This interaction may also occur with black psyllium. To avoid changes in absorption, take psyllium 30-60 minutes after metformin.

Likelihood Possible Evidence D
Olanzapine (Zyprexa)

Theoretically, taking black psyllium at the same time as olanzapine might reduce olanzapine absorption.
The fiber in black psyllium might decrease the absorption of olanzapine. A single case report describes a reduction in the effectiveness of olanzapine when it was concomitantly administered with an unspecified type of psyllium 3 grams orally twice daily. This effect was reversed when psyllium was stopped.

Likelihood Possible Evidence D
Digoxin (Lanoxin)

Theoretically, taking black psyllium at the same time as digoxin might reduce digoxin absorption and decrease digoxin levels.
Psyllium might bind digoxin in the gut. However, some clinical evidence suggests that psyllium does not impact digoxin absorption.

Likelihood Unlikely Evidence B
Ethinyl Estradiol

Theoretically, taking black psyllium at the same time as ethinyl estradiol might alter levels of estradiol.
Concurrent use of blond psyllium with ethinyl estradiol results in a slight increase in the extent of ethinyl estradiol absorption and a slower rate of absorption. This is unlikely to be clinically significant.

Likelihood Unlikely Evidence D
Oral Drugs

Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.
Psyllium seems to have variable effects on drug absorption. To avoid changes in absorption, take psyllium 30-60 minutes after oral medications. Animal research shows that blond psyllium delays and increases the absorption of metformin and ethinyl estradiol. Case reports and animal research suggest that blond psyllium might reduce absorption of lithium, digoxin, olanzapine, and carbamazepine. Finally, some pharmacokinetic studies show that psyllium does not affect the absorption of levothyroxine or warfarin. Although many of these studies evaluated blond psyllium, the fiber content in black psyllium may have similar effects.

Likelihood Possible Evidence B
Dietary Fiber full monograph & interactions

Black Pepper Fruit Extract17 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
Black Pepper Fruit Extract full monograph & interactions

Coleus root extract7 drug types · 915 drugs

Calcium Channel Blockers

Theoretically, combining coleus with calcium channel blockers might increase the coronary vasodilatory effects.
Forskolin, a constituent of coleus, and calcium channel blockers both cause coronary vasodilatory effects.

Likelihood Probable Evidence B
Nitrates

Theoretically, combining coleus with nitrates might increase the coronary vasodilatory effects.
Forskolin, a constituent of coleus, and nitrates both cause coronary vasodilatory effects.

Likelihood Probable Evidence B
Anticoagulant/Antiplatelet Drugs

Theoretically, concomitant use of coleus and anticoagulant or antiplatelet drugs might increase the risk of bruising and bleeding.
In vitro and animal research shows that forskolin, a constituent of coleus, can inhibit platelet aggregation and adhesion.

Likelihood Possible Evidence D
Antihypertensive Drugs

Theoretically, combining coleus with antihypertensive drugs might cause additive blood pressure lowering effects and increase the risk of hypotension.
Animal research shows that forskolin, a constituent of coleus, may lower blood pressure.

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

Theoretically, taking coleus may affect drugs metabolized by CYP2C9 and increase the risk of adverse effects or reduce the effectiveness.
Research on the effect of coleus on CYP2C9 is conflicting. Some animal research shows that coleus extract can induce CYP2C9, while in vitro research shows that coleus can inhibit CYP2C9. Until more is known, advise patients that taking coleus might increase or decrease levels of drugs metabolized by CYP2C9.

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

Theoretically, taking coleus might decrease serum levels of drugs metabolized by CYP3A4.
In vitro research shows that coleus can activate the nuclear receptor, pregnane X receptor (PXR), which results in increased expression of CYP3A4. Although the clinical significance of this is not known, use caution when considering concomitant use of coleus and other drugs affected by these enzymes.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, taking coleus may affect the metabolism of warfarin and increase the risk of adverse effects or reduce the effectiveness.
Some animal research shows that coleus extract can induce cytochrome P450 2C9 (CYP2C9), an enzyme that metabolizes warfarin. However, other in vitro research shows that coleus can inhibit CYP2C9. Theoretically, taking coleus with drugs metabolized by CYP2C9 might affect drug levels and the risk of adverse effects. Until more is known, advise patients that taking coleus might increase or decrease levels of warfarin.

Likelihood Possible Evidence D
Coleus root extract full monograph & interactions

Green Coffee Bean Extract33 drug types · 591 drugs

Ephedrine

Theoretically, concomitant use might increase the risk of stimulant adverse effects.
Coffee contains caffeine. There is evidence that using ephedrine with caffeine might increase the risk of serious life-threatening or debilitating adverse effects such as hypertension, myocardial infarction, stroke, seizures, and death. Tell patients to avoid taking caffeine with ephedrine and other stimulants.

Likelihood Probable Evidence D
Adenosine (Adenocard)

Theoretically, coffee might decrease the vasodilatory effects of adenosine and interfere with its use prior to stress testing.
Coffee contains caffeine. Caffeine is a competitive inhibitor of adenosine at the cellular level. However, caffeine does not seem to affect supplemental adenosine because high interstitial levels of adenosine overcome the antagonistic effects of caffeine. It is recommended that methylxanthines such as caffeine, as well as methylxanthine-containing products, be stopped 24 hours prior to pharmacological stress tests. However, methylxanthines appear more likely to interfere with dipyridamole (Persantine) than adenosine-induced stress testing.

Likelihood Possible Evidence B
Alendronate (Fosamax)

Coffee reduces alendronate bioavailability.
Separate coffee ingestion and alendronate administration by two hours. Coffee reduces alendronate bioavailability by 60%.

Likelihood Probable Evidence B
Anticoagulant/Antiplatelet Drugs

Theoretically, coffee may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Coffee contains caffeine. Caffeine is reported to have antiplatelet activity. Theoretically, the caffeine in coffee might increase the risk of bleeding when used concomitantly with these agents. However, this interaction has not been reported in humans. There is some evidence that caffeinated coffee might increase the fibrinolytic activity in blood.

Likelihood Unlikely Evidence D
Beta-Adrenergic Agonists

Theoretically, concomitant use of large amounts of coffee might increase cardiac inotropic effects of beta-agonists.
Coffee contains caffeine. Caffeine can increase cardiac inotropic effects of beta-agonists.

Likelihood Probable Evidence D
Cimetidine (Tagamet)

Theoretically, cimetidine might increase the effects and adverse effects of caffeine in coffee.
Coffee contains caffeine. Cimetidine can reduce caffeine clearance by 31% to 42%.

Likelihood Likely Evidence B
Clozapine (Clozaril)

Theoretically, coffee might increase the levels and adverse effects of clozapine and acutely exacerbate psychotic symptoms.
Coffee contains caffeine. Caffeine can increase the effects and toxicity of clozapine. Caffeine doses of 400-1000 mg daily inhibit clozapine metabolism. Clozapine is metabolized by cytochrome P450 1A2 (CYP1A2). Researchers speculate that caffeine might inhibit CYP1A2. However, there is no reliable evidence that caffeine affects CYP1A2. There is also speculation that genetic factors might make some patients be more sensitive to the interaction between clozapine and caffeine.

Likelihood Possible Evidence B
Contraceptive Drugs

Theoretically, concomitant use might increase the effects and adverse effects of caffeine found in coffee.
Coffee contains caffeine. Oral contraceptive drugs can decrease caffeine clearance by 40% to 65%.

Likelihood Probable Evidence B
Dipyridamole (Persantine)

Theoretically, coffee might decrease the vasodilatory effects of dipyridamole and interfere with its use prior to stress testing.
Coffee contains caffeine. Caffeine is a methylxyanthine that may inhibit dipyridamole-induced vasodilation. It is recommended that methylxanthines such as caffeine, as well as methylxanthine-containing products such as coffee, be stopped 24 hours prior to pharmacological stress tests. Methylxanthines appear more likely to interfere with dipyridamole (Persantine) than adenosine-induced stress testing.

Likelihood Probable Evidence B
Disulfiram (Antabuse)

Theoretically, disulfiram might increase the risk of adverse effects from caffeine.
Coffee contains caffeine. In human research, disulfiram decreases the clearance and increases the half-life of caffeine.

Likelihood Probable Evidence B
Diuretic Drugs

Theoretically, concomitant use might increase the risk of hypokalemia.
Coffee contains caffeine. Caffeine, especially in excessive amounts, can reduce potassium levels due to stimulation of the sodium-potassium pump. Diuretics can also cause lower potassium levels.

Likelihood Possible Evidence D
Estrogens

Theoretically, estrogens might increase the levels and adverse effects of caffeine.
Coffee contains caffeine. Estrogen inhibits caffeine metabolism.

Likelihood Probable Evidence B
Fluvoxamine (Luvox)

Theoretically, fluvoxamine might increase the levels and adverse effects of caffeine.
Coffee contains caffeine. Fluvoxamine reduces caffeine metabolism.

Likelihood Probable Evidence B
Lamotrigine (Lamictal)

Coffee consumption can decrease the levels and clinical effects of lamotrigine.
A pharmacokinetic study in patients taking lamotrigine shows that consumption of coffee, both caffeinated and decaffeinated, can decrease the area under the concentration-time curve (AUC) and the peak plasma level (Cmax) of lamotrigine. Each additional cup of coffee reduced the AUC and Cmax by 4% and 3%, respectively. It is unclear whether this interaction is due to induction of lamotrigine metabolism or inhibition of lamotrigine absorption.

Likelihood Probable Evidence B
Levothyroxine (Synthroid, Others)

Coffee can reduce the absorption of levothyroxine.
In some patients, coffee can reduce levothyroxine absorption, possibly through the formation of non-absorbable complexes. A pharmacokinetic study in these patients found that 25-30 mL of espresso coffee consumed with levothyroxine tablets delayed the time to peak plasma levels by 38-43 minutes, reduced the peak plasma level (Cmax) by 19% to 36%, and reduced the area under the curve (AUC) by 27% to 36%. Coffee consumed one hour after levothyroxine did not affect absorption. It is not known whether this interaction occurs with other types of coffee. Tell patients to avoid drinking coffee at the same time that they take their levothyroxine, and for up to an hour afterwards.

Likelihood Possible Evidence B
Lithium

Theoretically, abrupt coffee withdrawal might increase the levels and adverse effects of lithium.
Coffee contains caffeine. Abrupt caffeine withdrawal can increase serum lithium levels. Two cases of lithium tremor that worsened with abrupt coffee withdrawal have been reported. There is also one case of a 2.8-fold increase in blood lithium levels after a patient taking lithium reduced his coffee consumption from 13-20 cups daily to 10 cups daily.

Likelihood Probable Evidence D
Monoamine Oxidase Inhibitors (Maois)

Theoretically, concomitant use might increase the risk of a hypertensive crisis.
Coffee contains caffeine. Caffeine has been shown to inhibit monoamine oxidase (MAO) A and B in laboratory studies. Concomitant intake of large amounts of caffeine with MAOIs might precipitate a hypertensive crisis. In a case report, a patient that consumed 10-12 cups of caffeinated coffee and took the MAOI tranylcypromine presented with severe hypertension. Hypertension was resolved after the patient switched to drinking decaffeinated coffee.

Likelihood Possible Evidence D
Nicotine

Theoretically, concomitant use might increase the risk of hypertension.
Coffee contains caffeine. Concomitant use of caffeine and nicotine has been shown to have additive cardiovascular effects, including increased heart rate and blood pressure. Blood pressure was increased by 10.8/12.4 mmHg when the agents were used concomitantly.

Likelihood Probable Evidence B
Pentobarbital (Nembutal)

Theoretically, coffee might reduce the effects of pentobarbital.
Coffee contains caffeine. Theoretically, caffeine might negate the hypnotic effects of pentobarbital.

Likelihood Possible Evidence B
Phenylpropanolamine

Theoretically, phenylpropanolamine might increase the risk of hypertension, as well as the levels and adverse effects of caffeine.
Coffee contains caffeine. Concomitant use of phenylpropanolamine and caffeine might cause an additive increase in blood pressure. Phenylpropanolamine also seems to increase caffeine serum levels.

Likelihood Probable Evidence B
Pioglitazone (Actos)

Theoretically, coffee might increase the levels and clinical effects of pioglitazone.
Coffee contains caffeine. Animal research suggests that caffeine can modestly increase the maximum concentration, area under the curve, and half-life of pioglitazone, and also reduce its clearance. This increased the antidiabetic effects of pioglitazone. However, the exact mechanism of this interaction is unclear.

Likelihood Possible Evidence D
Quinolone Antibiotics

Theoretically, quinolone antibiotics might increase the levels and adverse effects of caffeine.
Coffee contains caffeine. Concomitant use of caffeine and quinolones can decrease caffeine clearance and increase effects and risk of adverse effects.

Likelihood Probable Evidence B
Riluzole (Rilutek)

Theoretically, concomitant use might increase the levels and adverse effects of both caffeine and riluzole.
Coffee contains caffeine. Caffeine and riluzole are both metabolized by cytochrome P450 1A2 (CYP1A2), and concomitant use might reduce metabolism of one or both agents.

Likelihood Possible Evidence D
Stimulant Drugs

Theoretically, concomitant use might increase stimulant adverse effects.
Coffee contains caffeine. Due to the central nervous system (CNS) stimulant effects of caffeine, concomitant use with stimulant drugs can increase the risk of adverse effects.

Likelihood Probable Evidence C
Theophylline

Theoretically, coffee might increase the levels and adverse effects of theophylline.
Coffee contains caffeine, which can increase theophylline levels.

Likelihood Probable Evidence B
Green Coffee Bean Extract full monograph & all 33 interactions
The maker

Brand information

Manufacturer and brand details for Forskolin+ Lean with Black Pepper Extract, from the product label.

Purely Inspired

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Name
Iovate Health Sciences U.S.A. Inc
Street Address
1105 North Market Street, Suite 1330
City
Wilmington
State
DE
ZipCode
19801
Web Address
www.purelyinspired.com
Pharmacist Counseling Corner

Forskolin+ Lean with Black Pepper Extract by Purely Inspired: Common Questions

Does Forskolin+ Lean with Black Pepper Extract by Purely Inspired interact with any medications?
Yes. Based on its ingredients, Forskolin+ Lean with Black Pepper Extract has a known interaction with 2,177 medications, including 37 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Forskolin+ Lean with Black Pepper Extract contains 4 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 work for weight loss or lean muscle?
The data we have on these three ingredients focuses mainly on other effects. Green coffee bean shows promise for mental alertness and possibly for heart health and blood sugar, but we don't have reliable evidence from the monographs on weight or muscle. Black pepper and coleus root haven't been reliably studied for body composition. If weight loss is your goal, ask your pharmacist what the science actually shows for this product.
What's the caffeine content? I'm sensitive to it.
The product facts don't specify how much caffeine is in each capsule. Call the manufacturer or check the label, because even small amounts can cause jitters, anxiety, or insomnia in sensitive people — and this product contains green coffee bean extract, which is a caffeine source.
Can I take this if I'm on blood pressure medication?
Not without talking to your doctor or pharmacist first. Both the coleus root and the green coffee bean extract can affect blood pressure, and the interaction risk depends on which specific medication you take. Use the checker on this page with your exact drug name, or call us before you buy.
Is black pepper extract safe? I've never heard of it in supplements before.
Black pepper as a food spice is safe. In concentrated supplement form — which is what's in this product — it's generally well tolerated at a single dose, though long-term safety isn't as well studied. The main side effects are a burning aftertaste and indigestion. If you have a history of pepper allergy, be cautious.
Can I take this while I'm pregnant or breastfeeding?
No for coleus — the safety data advises against it in pregnancy and while breastfeeding because there isn't enough research. For caffeine (from the green coffee bean), limit your intake and talk with your doctor about what's safe for you. Caffeine does pass into breast milk, so keep amounts low and watch your baby for fussiness or sleep problems.
What are the most common side effects?
From the green coffee bean extract (caffeine): agitation, anxiety, headache, insomnia, and nervousness — especially with higher doses. From black pepper: a burning aftertaste and indigestion. From coleus: diarrhea, nausea, or constipation. If any of these bother you, stop and talk to your pharmacist.

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

Not sure if Forskolin+ Lean with Black Pepper Extract 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.

Forskolin+ Lean with Black Pepper Extract label
Go deeper

The Full Monographs Behind Forskolin+ Lean with Black Pepper Extract’s Ingredients

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

Herb & supplement monograph

Black Psyllium

Interacts with 2,025 drugs

Black psyllium is a soluble-fiber supplement made from the seeds of a Plantago plant, used mostly to ease constipation and support digestive health. It is best known and most studied for rel...

Read the full Black Psyllium monograph → Herb & supplement monograph

Coffee

Interacts with 591 drugs

Coffee is a widely consumed beverage made from roasted coffee beans, valued mainly for its caffeine, which boosts alertness and energy. For most healthy adults, moderate coffee intake is gen...

Read the full Coffee monograph → 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

Coleus

Interacts with 915 drugs

Coleus is a plant from the mint family whose root contains a compound called forskolin, often marketed for weight loss, asthma, and heart health. While early lab and small human studies are...

Read the full Coleus monograph →
Sources

Sources & How We Checked

Forskolin+ Lean with Black Pepper Extract'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 238 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 Psyllium 18 references
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  13. Semen plantaginis in: WHO Monographs on Selected Medicinal Plants, volume 1. World Health Organization, Geneva, 1999. Available at http://apps.who.int/medicinedocs/en/d/Js2200e/. Accessed November 26, 1026.
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  17. Chiu AC, Sherman SI. Effects of pharmacological fiber supplements on levothyroxine absorption. Thyroid. 1998;8(8):667-71. PubMed
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See these in context on the Black Psyllium monograph →

Coffee 175 references
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  14. Loftus HL, Astell KJ, Mathai ML, et al. Coleus forskohlii Extract Supplementation in Conjunction with a Hypocaloric Diet Reduces the Risk Factors of Metabolic Syndrome in Overweight and Obese Subjects: A Randomized Controlled Trial. Nutrients. 2015;7(11): PubMed
  15. Yokotani K, Chiba T, Sato Y, et al. Hepatic cytochrome P450 mediates interaction between warfarin and Coleus forskohlii extract in vivo and in vitro. J Pharm Pharmacol. 2012;64(12):1793-801.
  16. Nishijima C, Chiba T, Sato Y, Umegaki K. Nationwide Online Survey Enables the Reevaluation of the Safety of Coleus forskohlii Extract Intake Based on the Adverse Event Frequencies. Nutrients. 2019;11(4). pii: E866. PubMed

See these in context on the Coleus monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

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.

© 2021 Therapeutic Research Center, LLC

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