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Dietary supplement

Ultra Energy Formula Ingredients & Drug Interactions

by Nature's Blend

Ultra Energy Formula label
See full label image
Tablet Or Pill Category: Other Combinations
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Ultra Energy Formula 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

Ultra Energy Formula is a dietary supplement by Nature's Blend with 7 active ingredients. Its ingredients are commonly taken for general energy and vitality, immune support, nutritional supplement.Based on those ingredients, 766 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Guarana seed extract, Octacosanol, Calcium. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Ultra Energy Formula by Nature's Blend

Ask about any prescription or over-the-counter medication and we check it for interactions with Ultra Energy Formula by Nature's Blend — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Ultra Energy Formula by Nature's Blend

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 7 of its 7 active ingredients.
  • “Guarana seed extract” is listed as a grouped ingredient — the label gives one combined amount (133 mg) without saying how much of each component you get.

Ultra Energy Formula contains seven active ingredients. Caffeine is a central nervous system stimulant that's proven effective for staying mentally alert and improving athletic performance.

Bee pollen is a mixture of pollen, enzymes, and plant compounds — the evidence for it is thin for most uses. Guarana seed extract is another source of caffeine-like compounds.

Glycine is an amino acid that your body uses to build proteins and neurotransmitters. L-Lysine HCl is an essential amino acid, mainly studied for cold sores.

Octacosanol is a fatty alcohol found in plants and waxes. And Calcium is a mineral critical for bone health and many body functions.

The product also contains inactive ingredients like cellulose, silica, and digestive enzymes (pancreatin, papain, pepsin).

Does it work?

Strong evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: Energy and physical performance support.
  • We looked for evidence on: Athletic performance, Cancer-related fatigue, Chemotherapy-related fatigue, Chronic fatigue syndrome (CFS), Exercise-induced muscle damage, Exercise-induced muscle soreness — and 4 related terms.
  • The strongest evidence on file: Caffeine is rated "Likely Effective" for Athletic performance (Natural Medicines).
  • Also on file: Caffeine is rated "Likely Effective" for Mental alertness.
  • Also on file: Bee Pollen is rated "Possibly Ineffective" for Athletic performance.

Caffeine is effective for neonatal apnea (a breathing problem in newborns) and postoperative headache, and likely effective for mental alertness and athletic performance. Bee pollen shows insufficient evidence to rate it for any condition in our data — we simply don't have solid trials.

Glycine is possibly effective for schizophrenia, but again, evidence for most of its other uses is insufficient. Lysine is possibly effective for cold sores.

Octacosanol and guarana seed extract both lack established evidence for the conditions listed in our data. Calcium is effective for kidney failure, upset stomach, low blood calcium, and high blood potassium, and likely effective for preventing osteoporosis.

The bottom line: you're looking mainly at caffeine for the energy and mental boost claim.

The evidence, ingredient by ingredient Bee Pollen Guarana Caffeine Glycine Lysine Octacosanol Calcium

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 6 of the 6 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 6 of 6.
  • General safety write-ups exist for 6 of 6.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Caffeine is generally well tolerated in moderate amounts for healthy adults, but high doses can cause serious side effects, and the safety data advise caution in pregnancy — ask your doctor about safe limits. Small amounts pass into breast milk; moderate intake is usually considered acceptable but can affect the baby.

Common side effects include anxiety, headache, insomnia, jitteriness, nausea, and restlessness; rarely, stroke has been reported. Bee pollen is generally tolerated by most people but can trigger allergic reactions, sometimes severe — especially if you're allergic to ragweed or related plants.

The safety data advise against use in pregnancy, and it's best avoided while breastfeeding. Glycine is generally well tolerated at typical doses, but long-term safety is limited, and it's best avoided in pregnancy and breastfeeding unless your doctor approves.

Lysine is generally well tolerated, though high amounts may cause stomach upset; supplement safety in pregnancy and breastfeeding is not well studied. Octacosanol is generally well tolerated in studied amounts but has limited long-term data, and the safety data advise against it in pregnancy and breastfeeding.

Calcium is generally safe at recommended amounts; adequate calcium is important in pregnancy and breastfeeding when used as directed, though very high doses raise concerns about kidney stones and, possibly, prostate cancer risk.

Side effects, ingredient by ingredient Bee Pollen Guarana Caffeine Glycine Lysine Octacosanol Calcium

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?
  • 6 of the 6 matched ingredients can interact with medications — Bee Pollen, Lysine, Octacosanol, Calcium, Caffeine, among others.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications; heart-rhythm medications; lithium; Parkinson's medications.
  • For scale: 766 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 Ultra Energy Formula, check with your pharmacist if you take ephedrine (or any decongestant or stimulant), blood thinners like warfarin, HIV medications (especially dolutegravir, elvitegravir, or raltegravir), the antibiotic ceftriaxone, seizure medications (phenobarbital, carbamazepine), the antipsychotic clozapine, thyroid medication (levothyroxine), barbiturates for sleep (pentobarbital), fluoroquinolone antibiotics, the stress-test drug dipyridamole, beta-blockers or other blood pressure medicines (propranolol, diltiazem, nitroprusside, sotalol), diabetes medications, Parkinson's medication (levodopa/carbidopa), or the stomach medication cimetidine. Altogether, these interactions span 764 individual medications.

Check your own medication Run your meds through the checker above

The bottom line

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

Ultra Energy Formula is caffeine-based and geared toward energy and mental focus. It's reasonable for healthy adults looking for a caffeine boost, but if you take any prescription medications — especially blood thinners, seizure drugs, antipsychotics, thyroid medication, or heart drugs — you need to check with your pharmacist first.

Pregnant or breastfeeding people should talk to their doctor about safe limits. Because this product has so many potential interactions, don't start it without running your full medication list through our checker.

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

Assessment coverage: 6 of 7 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Nov 22, 2022.

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 Ultra Energy Formula, straight from the product label.

Brand Nature's Blend
Barcode (UPC) 079854000351
Net contents 60 Tablet(s)
Market status On market
Date entered into DSLD Nov 22, 2022
DSLD ID 274711
Product type Other Combinations
Supplement form Tablet Or Pill
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 Ultra Energy Formula by Nature's Blend, 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 Tablet(s)
Maximum serving Sizes:
1 Tablet(s)
Servings per container
60
UPC/BARCODE
079854000351
IngredientAmount% DV
Caffeine30 mg--
Bee Pollen500 mg--
Guarana seed extract133 mg--
Glycine25 mg--
L-Lysine HCl25 mg--
Octacosanol1000 mcg--
DL-Methionine25 mg--
Calcium90 mg7%

Other ingredients: Modified Cellulose, Croscarmellose Sodium, Silica, Stearic Acid, Magnesium Stearate, Triacetin, Polydextrose, Pancreatin, Papain, Pepsin

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.
Storage

Store in a cool, dry place.

Precautions

Keep out of the reach of children.

Double safety sealed for your protection. Do not use if either seal is broken or missing.

Formulation

Preservative & gluten free. No starch, artificial colors, artificial flavors, or corn added.

This product is manufactured under strict quality control guidelines; therefore, purity and label potency are guaranteed. Made in USA & American Owned

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions: As a dietary supplement, take one tablet daily, preferably with a meal or as directed by your healthcare professional.

Seals/Symbols

Lab Tested Potency Assay Guaranteed Release

General Statements

Questions/Comments Call 1-800-682-9862

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

See for yourself

Ultra Energy Formula by Nature's Blend label

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

Ultra Energy Formula 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 Ultra Energy Formula by Nature's Blend

These are the 7 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Tablet(s) Dosage formTablet Or Pill 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.

Bee Pollen

Interacts with
2 drugs
500 mg per serving

Bee pollen is a nutrient-rich product collected by bees and marketed as a 'superfood' for energy and immune support, but solid human evidence for most...

Bee Pollen monograph & interactions

Guarana seed extract

Interacts with
655 drugs
133 mg per serving

Guarana is an Amazonian seed that is naturally high in caffeine, which explains most of its stimulant and energy effects. While it may give a short-te...

Guarana seed extract monograph & interactions

Glycine

Interacts with
1 drug
25 mg per serving

Glycine is a non-essential amino acid your body makes on its own and that also appears in protein-rich foods. It is most studied for improving sleep q...

Glycine monograph & interactions

L-Lysine HCl

Interacts with
1 drug
25 mg per serving

Lysine is an essential amino acid your body cannot make on its own, so it must come from food or supplements. People most often take extra lysine to t...

L-Lysine HCl monograph & interactions

Octacosanol

Interacts with
248 drugs
1000 mcg per serving

Octacosanol is a waxy long-chain alcohol from plant sources that is most often promoted for exercise endurance and cholesterol support, but solid huma...

Octacosanol monograph & interactions

DL-Methionine

25 mg per serving

Calcium

Interacts with
168 drugs
90 mg per serving Form: Calcium Gluconate, Calcium Phosphate

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

Calcium monograph & interactions

Other (inactive) ingredients: Modified Cellulose, Croscarmellose Sodium, Silica, Stearic Acid, Magnesium Stearate, Triacetin, Polydextrose, Pancreatin, Papain, Pepsin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Ultra Energy Formula by Nature's Blend Drug Interactions

Want to check YOUR meds against Ultra Energy Formula?

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
766Drugs
15 Major 653 Moderate 98 Minor

Ingredients driving the most interactions

Guarana seed extract 655
Octacosanol 248
Calcium 168
Bee Pollen 2
Glycine 1

Individual Drug Interactions

The ingredients in Ultra Energy Formula interact with 766 drugs. Click any drug to see the details.

6 of the 7 ingredients in Ultra Energy Formula interact with drugs. Each result below shows which ingredient is responsible. Guarana seed extract Octacosanol Calcium Bee Pollen Glycine L-Lysine HCl

Each ingredient & the kinds of drugs it affects

For each ingredient in Ultra Energy Formula 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.

Guarana seed extract41 drug types · 655 drugs

Ephedrine

Theoretically, concomitant use might increase the risk for stimulant adverse effects.
Guarana contains caffeine. Use of ephedrine with caffeine can increase the risk of stimulatory adverse effects. 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.

Likelihood Probable Evidence D
Adenosine (Adenocard)

Theoretically, guarana might decrease the vasodilatory effects of adenosine and interfere with its use prior to stress testing.
Guarana 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 and 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
Anticoagulant/Antiplatelet Drugs

Theoretically, guarana may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
In vitro and animal research suggests that guarana extract can inhibit platelet aggregation. This effect may be due to the caffeine in guarana, which is also reported to have antiplatelet activity. This interaction has not been reported in humans.

Likelihood Possible Evidence D
Beta-Adrenergic Agonists

Theoretically, concomitant use might increase the clinical effects of beta-adrenergic agonists.
Guarana contains caffeine. Theoretically, concomitant use of large amounts of caffeine might increase cardiac inotropic effects of beta-agonists.

Likelihood Probable Evidence D
Carbamazepine (Tegretol)

Theoretically, guarana might reduce the effects of carbamazepine and increase the risk for convulsions.
Animal research suggests that taking caffeine can lower the anticonvulsant effects of carbamazepine and can induce seizures when given to animals in doses above 400 mg/kg. Human research has shown that taking caffeine 300 mg in three divided doses along with carbamazepine 200 mg reduces the bioavailability of carbamazepine by 32% and prolongs the plasma half-life of carbamazepine two-fold in healthy individuals.

Likelihood Possible Evidence D
Cimetidine (Tagamet)

Theoretically, concomitant use might increase the effects and adverse effects of caffeine in guarana.
Guarana contains caffeine. Cimetidine decreases the rate of caffeine clearance by 31% to 42%.

Likelihood Likely Evidence B
Clozapine (Clozaril)

Theoretically, guarana might increase the levels and adverse effects of clozapine and acutely exacerbate psychotic symptoms.
Guarana contains caffeine. Caffeine can increase the effects and toxicity of clozapine. Caffeine doses of 400-1000 mg per day 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 more sensitive to the interaction between clozapine and caffeine.

Likelihood Possible Evidence B
Dipyridamole (Persantine)

Theoretically, guarana might decrease the vasodilatory effects of dipyridamole and interfere with its use prior to stress testing.
Guarana contains caffeine. Caffeine might inhibit dipyridamole-induced vasodilation. It is recommended that methylxanthines and methylxanthine-containing products be stopped 24 hours prior to pharmacological stress tests. Methylxanthines appear more likely to interfere with dipyridamole than adenosine-induced stress testing.

Likelihood Probable Evidence B
Disulfiram (Antabuse)

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

Likelihood Probable Evidence D
Diuretic Drugs

Theoretically, using guarana with diuretic drugs might increase the risk of hypokalemia.
Guarana contains caffeine. Caffeine, especially in excessive amounts, can reduce potassium levels due to stimulation of the sodium-potassium pump. Diuretics can also lower potassium levels.

Likelihood Possible Evidence D
Estrogens

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

Likelihood Probable Evidence B
Ethosuximide (Zarontin)

Theoretically, guarana might reduce the effects of ethosuximide and increase the risk for convulsions.
Guarana contains caffeine. Animal research shows that caffeine 92.4 mg/kg can decrease the anticonvulsant activity of ethosuximide. This effect has not been observed in humans.

Likelihood Possible Evidence D
Felbamate (Felbatol)

Theoretically, guarana might reduce the effects of felbamate and increase the risk for convulsions.
Guarana contains caffeine. Animal research shows that a high dose of caffeine 161.7 mg/kg can decreases the anticonvulsant activity of felbamate. This effect has not been observed in humans.

Likelihood Possible Evidence D
Flutamide (Eulexin)

Theoretically, guarana might increase the levels and adverse effects of flutamide.
Guarana contains caffeine. In vitro evidence shows that caffeine can inhibit the metabolism of flutamide. However, this effect has not been reported in humans.

Likelihood Probable Evidence D
Fluvoxamine (Luvox)

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

Likelihood Probable Evidence D
Lithium

Theoretically, abrupt guarana withdrawal might increase the levels and adverse effects of lithium.
Guarana contains caffeine. Theoretically, abrupt caffeine withdrawal might increase serum lithium levels. There are two case reports of lithium tremor that worsened upon abrupt coffee withdrawal.

Likelihood Probable Evidence D
Monoamine Oxidase Inhibitors (Maois)

Theoretically, concomitant use might increase the risk of a hypertensive crisis.
Guarana contains caffeine. Caffeine has been shown to inhibit 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.
Guarana 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 D
Pentobarbital (Nembutal)

Theoretically, guarana might decrease the effects of pentobarbital.
Guarana contains caffeine. In vivo evidence suggests that caffeine can negate the hypnotic effects of pentobarbital in humans. However, animal research suggests that guarana does not alter the hypnotic effect of pentobarbital.

Likelihood Possible Evidence B
Phenobarbital (Luminal)

Theoretically, guarana might reduce the effects of phenobarbital and increase the risk for convulsions.
Guarana contains caffeine. Animal research shows that caffeine can decrease the anticonvulsant activity of phenobarbital. The exact mechanism of this interaction is unclear.

Likelihood Possible Evidence D
Phenylpropanolamine

Theoretically, phenylpropanolamine might increase the risk of hypertension, as well as the levels and adverse effects of caffeine.
Guarana 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
Phenytoin (Dilantin)

Theoretically, guarana might reduce the effects of phenytoin and increase the risk for convulsions.
Guarana contains caffeine. Animal research shows that caffeine can decrease the anticonvulsant activity of phenytoin. The effect does not seem to be related to the seizure threshold-lowering effects of caffeine. However, the exact mechanism of this interaction is unclear.

Likelihood Possible Evidence D
Pioglitazone (Actos)

Theoretically, guarana might increase the levels and clinical effects of pioglitazone.
Guarana 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
Riluzole (Rilutek)

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

Likelihood Possible Evidence D
Stimulant Drugs

Theoretically, concomitant use might increase stimulant adverse effects.
Guarana 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 Possible Evidence D
Guarana seed extract full monograph & all 41 interactions

Octacosanol7 drug types · 248 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, octacosanol might inhibit platelet aggregation; however, clinical research suggests that this effect may not be clinically significant.
Octacosanol is the main component of policosanol. Some clinical research shows that taking policosanol 10-50 mg daily for 7-15 days can inhibit platelet aggregation in healthy patients. However, one clinical trial shows that taking policosanol 10 mg twice daily for 2 weeks prior to initiating warfarin does not affect warfarin pharmacokinetics or warfarin response. Furthermore, a study in patients undergoing percutaneous coronary intervention with a drug-eluting stent found that taking policosanol 40 mg plus clopidogrel and aspirin daily for 30 days modestly reduced the risk for minor bleeding events when compared with taking clopidogrel and aspirin alone.

Likelihood Possible Evidence B
Antidiabetes Drugs

Theoretically, octacosanol might have additive effects when used in combination with antidiabetes drugs.
Octacosanol is the main component of policosanol. In humans, policosanol can decrease blood glucose. It is not clear if these effects occur with the use of octacosanol.

Likelihood Possible Evidence B
Beta-Blockers

Theoretically, concomitant use of octacosanol with beta-blockers might result in additive hypotensive effects.
Octacosanol is the main component of policosanol. Clinical research shows that policosanol 5 mg daily can have additive blood pressure-lowering effects in patients with hypertension who are taking beta-blockers. Also, animal research shows that policosanol can increase the hypotensive effects of propranolol. It is not clear if these effects occur with the use of octacosanol.

Likelihood Probable Evidence A
Levodopa/Carbidopa (Sinemet)

Concomitant use may worsen symptoms of Parkinson disease.
One small clinical study suggests that octacosanol might worsen dyskinesias and increase nervous tension in some patients being treated with levodopa/carbidopa.

Likelihood Probable Evidence D
Nitroprusside (Nitropress)

Theoretically, octacosanol might enhance the hypotensive effects of nitroprusside.
Octacosanol is the main component of policosanol. Animal research shows that taking policosanol along with nitroprusside can increase the hypotensive effects of nitroprusside. It is not clear if these effects occur with the use of octacosanol.

Likelihood Possible Evidence D
Propranolol (Inderal)

Theoretically, octacosanol might enhance the hypotensive effects of propranolol.
Octacosanol is the main component of policosanol. Animal research shows that taking policosanol along with propranolol can increase the blood pressure-lowering effects of propranolol. It is not clear if these effects occur with the use of octacosanol.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, octacosanol might inhibit platelet aggregation; however, clinical research suggests that this effect may not be clinically significant.
Octacosanol is the main component of policosanol. Some clinical research shows that taking policosanol 10-50 mg daily for 7-15 days can inhibit platelet aggregation in healthy patients. Therefore, there is concern that taking policosanol with warfarin might increase the risk of bruising and bleeding. However, one clinical trial shows that taking policosanol 10 mg twice daily for 2 weeks prior to warfarin dosing does not affect warfarin pharmacokinetics or warfarin response. It is not clear if these effects occur with the use of octacosanol.

Likelihood Possible Evidence B
Octacosanol 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

Bee Pollen1 drug type · 2 drugs

Warfarin (Coumadin)

There is some concern that bee pollen might interact with warfarin and increase the risk of bleeding.
In one case report, a patient on warfarin had a stable international normalized ratio (INR) of 1.9-3.3 for 9 months. The patient's INR was found to be 7.1 after starting bee pollen granules one teaspoon twice daily for approximately one month. The patient's warfarin dose was decreased by approximately 11% in order to return the INR to the therapeutic range while continuing the bee pollen supplement.

Likelihood Possible Evidence D
Bee Pollen full monograph & interactions

Glycine1 drug type · 1 drug

Clozapine (Clozaril)

Theoretically, glycine might decrease the effectiveness of clozapine.
One small clinical study in patients with schizophrenia shows that adding glycine to clozapine therapy worsens symptoms of schizophrenia when compared with clozapine alone. The mechanism of this interaction is unclear.

Likelihood Probable Evidence B
Glycine full monograph & interactions

L-Lysine HCl1 drug type · 1 drug

5-Ht4 Agonists

Theoretically, lysine may reduce the effects of 5-HT4 agonists.
Animal research suggests that L-lysine is a partial serotonin receptor 4 (5-HT4) antagonist and inhibits diarrhea induced by the 5-HT4 agonist, 5-hydroxytryptophane.

Likelihood Unlikely Evidence D
L-Lysine HCl full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Ultra Energy Formula, from the product label.

Nature's Blend

See all Nature's Blend products
Name
National Vitamin Company
City
Casa Grande
State
AZ
ZipCode
85122
Phone Number
1-800-682-9862
Web Address
www.nationalvitamin.com
Pharmacist Counseling Corner

Ultra Energy Formula by Nature's Blend: Common Questions

Does Ultra Energy Formula by Nature's Blend interact with any medications?
Yes. Based on its ingredients, Ultra Energy Formula has a known interaction with 766 medications, including 15 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Ultra Energy Formula contains 7 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 it safe to take this if I'm pregnant?
The safety data advise caution. Caffeine in particular should be limited in pregnancy — ask your doctor about safe amounts. Bee pollen and octacosanol are not recommended during pregnancy. The other ingredients don't have enough pregnancy safety data, so talk with your doctor before starting.
Will this actually help me with energy and focus?
Caffeine is effective and likely effective for mental alertness and is backed by solid evidence. Bee pollen, guarana, glycine, lysine, and octacosanol don't have reliable evidence for energy or focus in our data, so you're mainly getting the caffeine boost here.
What are the most common side effects from caffeine in this product?
Anxiety, dependence with long-term use, diarrhea, headache, insomnia, tremors, nausea, and restlessness. These are usually mild, but they're more likely if you're sensitive to caffeine or take high doses.
Can I take this if I'm allergic to pollen or ragweed?
You should be careful. Bee pollen in this formula can trigger serious allergic reactions in people with pollen allergies, especially ragweed allergies. If you have seasonal allergies to plants, talk to your pharmacist first.
Is this safe while breastfeeding?
Small amounts of caffeine pass into breast milk — moderate intake is usually considered acceptable, but it can affect the baby. Bee pollen and octacosanol are best avoided. Talk to your doctor about safe amounts of caffeine while you're nursing.
What is L-Lysine in this formula used for?
Lysine is an amino acid mainly studied for cold sores, where it's possibly effective. It's not well established for energy or athletic performance, which is what this formula seems designed for.

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.

Ultra Energy Formula label
Go deeper

The Full Monographs Behind Ultra Energy Formula’s Ingredients

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

Herb & supplement monograph

Bee Pollen

Interacts with 2 drugs

Bee pollen is a nutrient-rich product collected by bees and marketed as a 'superfood' for energy and immune support, but solid human evidence for most of these claims is lacking. It can caus...

Read the full Bee Pollen monograph → Herb & supplement monograph

Guarana

Interacts with 655 drugs

Guarana is an Amazonian seed that is naturally high in caffeine, which explains most of its stimulant and energy effects. While it may give a short-term boost in alertness and reduce fatigue...

Read the full Guarana monograph → Herb & supplement monograph

Caffeine

Interacts with 655 drugs

Caffeine is a natural stimulant found in coffee, tea, and many other plants and products. In moderate amounts it can boost alertness and reduce tiredness for most healthy adults, but too muc...

Read the full Caffeine monograph → Herb & supplement monograph

Glycine

Interacts with 1 drug

Glycine is a non-essential amino acid your body makes on its own and that also appears in protein-rich foods. It is most studied for improving sleep quality, where early research is promisin...

Read the full Glycine monograph → Herb & supplement monograph

Lysine

Interacts with 1 drug

Lysine is an essential amino acid your body cannot make on its own, so it must come from food or supplements. People most often take extra lysine to try to prevent or shorten cold sores, but...

Read the full Lysine monograph → Herb & supplement monograph

Octacosanol

Interacts with 248 drugs

Octacosanol is a waxy long-chain alcohol from plant sources that is most often promoted for exercise endurance and cholesterol support, but solid human evidence is limited and results are mi...

Read the full Octacosanol monograph → 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 →
Sources

Sources & How We Checked

Ultra Energy Formula'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 455 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.

Caffeine 236 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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