Major interaction on record — check this product against your medications before combining. Based on 8 of 9 ingredients. Check your meds →
Dietary supplement

Thor's Hammer Test Booster Blue Raspberry Ingredients & Drug Interactions

by Valhalla Labs

Thor's Hammer Test Booster Blue Raspberry label
See full label image
Powder 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 Thor's Hammer Test Booster Blue Raspberry 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

Thor's Hammer Test Booster Blue Raspberry is a dietary supplement by Valhalla Labs with 9 active ingredients. Its ingredients are commonly taken for bone health and osteoporosis prevention, dietary calcium deficiency, heartburn relief (calcium carbonate antacids).Based on those ingredients, 1,253 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Resveratrol, Kudzu Root Extract, Agmatine Sulfate. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Thor's Hammer Test Booster Blue Raspberry by Valhalla Labs

Ask about any prescription or over-the-counter medication and we check it for interactions with Thor's Hammer Test Booster Blue Raspberry by Valhalla Labs — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Thor's Hammer Test Booster Blue Raspberry by Valhalla Labs

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

Low disclosure
Ingredient Transparency · database check
Low

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

Why this rating?
  • The label discloses an exact amount for 0 of its 9 active ingredients.
  • “Valhalla Labs Thor's Hammer Proprietary Blend” is a proprietary blend — the label gives one combined amount (3,721 mg) without saying how much of each component you get.

This powder contains 9 ingredients, of which we've identified active components. The primary ingredient is calcium lactate, a form of supplemental calcium that supports bone health and other bodily functions.

You'll also find agmatine sulfate, L-carnitine, resveratrol, kudzu root extract, ellagic acid, and arimistane—compounds marketed to support athletic performance and hormonal balance, though clinical evidence for many is limited or absent. The remaining ingredients are 7,8-benzoflavone and mulberry extract, plus a proprietary blend.

Inactive ingredients include citric acid, food coloring (FD&C Blue No. 1), flavorings, sucralose for sweetness, and silicon dioxide as an anti-caking agent.

Does it work?

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

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

Why this rating?
  • The label markets this product for: testosterone support and male performance.
  • We looked for evidence on: Athletic performance, Erectile dysfunction (ED), Exercise-induced muscle damage, Exercise-induced muscle soreness, Muscle strength, Sexual function — and 1 related terms.
  • The closest evidence on file: Kudzu is rated "Insufficient Reliable Evidence To Rate" for Athletic performance (Natural Medicines).
  • Also on file: Calcium is rated "Insufficient Reliable Evidence To Rate" for Exercise-induced muscle damage.
  • Also on file: L-carnitine is rated "Insufficient Reliable Evidence To Rate" for Athletic performance, Exercise-induced muscle soreness, Exercise-induced muscle damage.

Calcium in this product is effective for bone health, low calcium levels (hypocalcemia), and kidney-related electrolyte problems like high potassium (hyperkalemia), and is likely effective for preventing osteoporosis. L-carnitine is effective for carnitine deficiency and possibly effective for heart failure and high cholesterol.

Resveratrol is possibly effective for obesity and hay fever, though it's rated possibly ineffective for heart disease and high cholesterol. Kudzu is possibly effective for alcohol use disorder but has insufficient evidence for most other uses listed.

Agmatine, ellagic acid, and arimistane all lack sufficient reliable evidence in our data to establish whether they work for their claimed purposes—athletic performance, erectile function, muscle strength, and blood sugar control are all rated as insufficiently studied.

The evidence, ingredient by ingredient Calcium Agmatine L-carnitine Resveratrol Kudzu Ellagic Acid Arimistane Black Mulberry

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 7 of the 8 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 8 of 8.
  • General safety write-ups exist for 8 of 8.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Calcium is generally well tolerated at recommended doses, though high amounts can cause constipation, diarrhea, gas, and stomach upset. Long-term use of more than 1,500–2,000 mg daily has been weakly linked to increased prostate cancer risk and possibly cardiovascular concerns in some studies, though the evidence is mixed.

Agmatine is well tolerated short-term but long-term safety isn't established; it may cause diarrhea, indigestion, or nausea. L-carnitine is generally well tolerated but can cause stomach upset, nausea, abdominal pain, and a fish-like body odor at higher doses; a rare risk of seizures has been reported.

Resveratrol commonly causes digestive upset and loose stools and is generally well tolerated, though high-dose safety is unknown. Kudzu is well tolerated short-term but can cause nausea, bloating, and rarely a rash.

Arimistane is a hormone-altering agent with little safety data and carries warnings from regulators; it should be avoided entirely. Ellagic acid in concentrated supplement form (as opposed to food sources) is poorly studied in humans.

Side effects, ingredient by ingredient Calcium Agmatine L-carnitine Resveratrol Kudzu Ellagic Acid Arimistane Black Mulberry

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?
  • 8 of the 8 matched ingredients can interact with medications — Resveratrol, Black Mulberry, Kudzu, Calcium, L-carnitine, 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.
  • For scale: 1,254 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking this product, double-check these medication types with your pharmacist or the search tool on this page: HIV integrase inhibitors (dolutegravir, elvitegravir, raltegravir)—calcium reduces their levels; intravenous ceftriaxone (antibiotic)—dangerous to mix with calcium; thyroid hormones like levothyroxine—calcium blocks absorption; heart rhythm drugs (sotalol, diltiazem); blood thinners and antiplatelet drugs (warfarin, aspirin, etc.)—resveratrol and L-carnitine may increase bleeding risk; blood pressure-lowering medications—agmatine may amplify the effect; diabetes medications—agmatine, kudzu, and ellagic acid may lower blood sugar further; and aromatase inhibitors (breast cancer drugs)—arimistane may have additive effects.

Check your own medication Run your meds through the checker above

The bottom line

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

If you take any prescription medication—especially HIV drugs, thyroid hormones, blood thinners, blood pressure or diabetes medicines, or antibiotics—check your exact drugs with our medication search tool before starting this product. Arimistane is a hormone-altering ingredient with minimal safety data and regulatory warnings; consider whether you want that in your supplement.

Talk with your pharmacist or doctor about whether the other ingredients and their potential interactions or side effects make sense for you.

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

Assessment coverage: 8 of 9 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 25, 2020.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Thor's Hammer Test Booster Blue Raspberry, straight from the product label.

Brand Valhalla Labs
Barcode (UPC) 684334909156
Net contents 0 Not Present
Market status On market
Date entered into DSLD Jan 25, 2020
DSLD ID 211033
Product type Other Combinations
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult Male (18-50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Thor's Hammer Test Booster Blue Raspberry by Valhalla Labs, 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:
5.4 Gram(s)
Maximum serving Sizes:
5.4 Gram(s)
Servings per container
30
UPC/BARCODE
684334909156
IngredientAmount% DV
Calories0 Calorie(s)--
Calcium Lactate0 NP--
Agmatine Sulfate0 NP--
L-Carnitine0 NP--
Resveratrol0 NP--
Kudzu Root Extract0 NP--
Ellagic Acid0 NP--
Arimistane0 NP--
7, 8-Benzoflavone0 NP--
Mulberry extract0 NP--
Valhalla Labs Thor's Hammer Proprietary Blend3721 mg--

Other ingredients: Citric Acid, FD&C Blue No.1, Natural and Artifical flavors, Sucralose, Silicon Dioxide

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to treat, cure, prevent or diagnose any disease

Suggested/Recommended/Usage/Directions

Directions: ToddLeeMD.com Test booster and Thor's Hammer are designed to be taken together and work as a system. As a system: Take ToddLeeMD.com Test Booster 2 days on, 1 day off or 5 days on, 2 days off. Take Thor's Hammer every day. Dosing: Mix 1 scoop in 8 oz. of water and drink as soon as you wake up on an empty stomach. If indigestion occurs reduce dose by half until your body adjust. Can stack with all other Valhalla-labs and ToddLeeMD.com products.

Precautions

Warning: Keep out of reach of children and pets

Always consult your physician before using this or any other dietary supplement.

Do not use if you have, or suspect having any health condition, psychiatric condition, medical condition, or are using prescription, over the counter or illegal drugs.

This product may increase testosterone and decrease estrogen. Women must not take this product under any circumstances. Extremely increased testosterone may result in kidney damage, liver damage, heart cardiovascular disease, bad cholesterol profile, hair lose, prostate cancer, impotence, and anxiety. Consult your physician if you are at risk for these illnesses and or are on other testosterone boosting products such as anabolic steroids

Warning: Keep out of reach of children and pets

General Statements

Michigan made

6 different estrogen technologies Natural testosterone booster

FDA Statement of Identity

Dietary Supplement

Seals/Symbols

GMP compliant

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

See for yourself

Thor's Hammer Test Booster Blue Raspberry by Valhalla Labs label

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

Thor's Hammer Test Booster Blue Raspberry 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 Thor's Hammer Test Booster Blue Raspberry by Valhalla Labs

These are the 9 active ingredients this product is made of. Select any to open its full monograph.

Serving size5.4 Gram(s) Dosage formPowder 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.

Valhalla Labs Thor's Hammer Proprietary Blend

3721 mg per serving

Other (inactive) ingredients: Citric Acid, FD&C Blue No.1, Natural and Artifical flavors, Sucralose, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

Thor's Hammer Test Booster Blue Raspberry by Valhalla Labs Drug Interactions

Want to check YOUR meds against Thor's Hammer Test Booster Blue Raspberry?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
1,253Drugs
7 Major 1,246 Moderate

Ingredients driving the most interactions

Resveratrol 822
Kudzu Root Extract 584
Agmatine Sulfate 258
Calcium Lactate 168
Mulberry extract 87

Individual Drug Interactions

The ingredients in Thor's Hammer Test Booster Blue Raspberry interact with 1,253 drugs. Click any drug to see the details.

8 of the 9 ingredients in Thor's Hammer Test Booster Blue Raspberry interact with drugs. Each result below shows which ingredient is responsible. Resveratrol Kudzu Root Extract Agmatine Sulfate Calcium Lactate Mulberry extract Ellagic Acid L-Carnitine Arimistane

Each ingredient & the kinds of drugs it affects

For each ingredient in Thor's Hammer Test Booster Blue Raspberry 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.

Resveratrol5 drug types · 822 drugs

Anticoagulant/Antiplatelet Drugs

Resveratrol may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Resveratrol seems to have antiplatelet effects.

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

Theoretically, resveratrol might increase levels of drugs metabolized by CYP1A2.
In vitro research shows that resveratrol can inhibit CYP1A2 enzymes. However, this interaction has not been reported in humans.

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

Theoretically, resveratrol might increase levels of drugs metabolized by CYP2C19.
In vitro research shows that resveratrol can inhibit CYP2C19 enzymes. However, this interaction has not been reported in humans.

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

Resveratrol might increase levels of drugs metabolized by CYP2E1.
In vitro research suggests that resveratrol inhibits CYP2E1 isoenzyme. Also, a pharmacokinetic study shows that taking resveratrol 500 mg daily for 10 days prior to taking a single dose of chlorzoxazone 250 mg increases the maximum concentration of chlorzoxazone by about 54%, the area under the curve of chlorzoxazone by about 72%, and the half-life of chlorzoxazone by about 35%. Chlorzoxazone is used as a probe drug for CYP2E1.

Likelihood Probable Evidence B
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, resveratrol might increase levels of drugs metabolized by CYP3A4.
In vitro research shows that resveratrol can inhibit the CYP3A4 enzyme. However, clinical research shows that taking resveratrol 3000 mg daily for 8 weeks does not necessitate dose adjustments to medications metabolized by CYP3A4.

Likelihood Possible Evidence D
Resveratrol full monograph & interactions

Kudzu Root Extract7 drug types · 584 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, kudzu may increase the risk of bleeding if used with antiplatelet or anticoagulant drugs.
Kudzu isoflavones are reported to have antiplatelet activity.

Likelihood Possible Evidence D
Caffeine

Theoretically, taking kudzu with caffeine might increase levels of caffeine.
In healthy males injected with the kudzu constituent puerarin, caffeine clearance and metabolism is inhibited. This effect has been attributed to inhibition of cytochrome P450 1A2 (CYP1A2) enzyme, which is involved in caffeine metabolism. It is unclear if taking kudzu orally would have this same effect.

Likelihood Probable Evidence D
Estrogens

Theoretically, kudzu might alter the effects of estrogen therapy.
Some research suggests that kudzu has estrogenic effects. This may enhance or inhibit the effects of estrogen therapy.

Likelihood Possible Evidence B
Hepatotoxic Drugs

Theoretically, concomitant use might have additive hepatotoxic effects.
There is some concern that kudzu can adversely affect the liver.

Likelihood Possible Evidence D
Methotrexate (Trexall, Others)

Theoretically, taking kudzu with methotrexate might increase the risk of methotrexate toxicity.
Preclinical research suggests that kudzu extract greatly reduces the elimination and increases the toxicity of methotrexate. Kudzu might inhibit organic anion transporters (OATs) that are responsible for hepatobiliary and renal excretion of anions, similar to the interaction between methotrexate and non-steroidal anti-inflammatory drugs (NSAIDs).

Likelihood Possible Evidence D
Tamoxifen (Nolvadex)

Theoretically, kudzu might interfere with tamoxifen activity.
Some research suggests that kudzu may have estrogenic effects.

Likelihood Possible Evidence B
Antidiabetes Drugs

Theoretically, taking kudzu with antidiabetes drugs might increase the risk of hypoglycemia.
Kudzu might lower blood glucose levels and have additive effects in patients treated with antidiabetic agents. The dose of diabetes medications might need to be adjusted.

Likelihood Unlikely Evidence D
Kudzu Root Extract full monograph & interactions

Agmatine Sulfate2 drug types · 258 drugs

Antidiabetes Drugs

Theoretically, agmatine might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal and in vitro research suggest that agmatine has mild hypoglycemic effects.

Likelihood Possible Evidence D
Antihypertensive Drugs

Theoretically, agmatine might increase the risk of hypotension when taken with antihypertensive drugs.
Animal research suggests that agmatine can modestly decrease heart rate and blood pressure.

Likelihood Possible Evidence D
Agmatine Sulfate full monograph & interactions

Calcium Lactate18 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 Lactate full monograph & interactions

Mulberry extract2 drug types · 87 drugs

Antidiabetes Drugs

Theoretically, black mulberry leaf might increase the risk of hypoglycemia when taken with antidiabetes drugs.
One small clinical study shows that black mulberry leaf extract has hypoglycemic effects. This is supported by in vitro research which also suggests that constituents in black mulberry twigs and leaves might have hypoglycemic effects.

Likelihood Possible Evidence D
Midazolam (Versed)

Theoretically, black mulberry might inhibit the metabolism of midazolam.
In vitro research shows that black mulberry juice can inhibit midazolam 1'-hydroxylation, a reaction that is catalyzed by cytochrome P450 3A4. This effect has not been reported in humans.

Likelihood Possible Evidence D
Mulberry extract full monograph & interactions

Ellagic Acid1 drug type · 86 drugs

Antidiabetes Drugs

Some clinical research shows that ellagic acid reduces fasting and postprandial glucose levels in patients with type 2 diabetes who are on stable doses of hypoglycemic agents such as metformin. Theoretically, taking ellagic acid with antidiabetes drugs might increase the risk of hypoglycemia.

Likelihood Possible Evidence B
Ellagic Acid full monograph & interactions

L-Carnitine3 drug types · 19 drugs

Acenocoumarol (Sintrom)

Theoretically, L-carnitine might increase the anticoagulant effects of acenocoumarol.
L-carnitine might enhance the anticoagulant effects of acenocoumarol, an oral anticoagulant similar to warfarin, but shorter-acting. There are at least two case reports of INR elevation with concomitant use. In one case, a 33-year-old male with a previously stable INR had an elevated INR of 4.65 after L-carnitine was started and continued for 10 weeks. INR normalized after discontinuation of the L-carnitine-containing product.

Likelihood Possible Evidence D
Thyroid Hormone

Theoretically, L-carnitine might decrease the effectiveness of thyroid hormone replacement.
L-carnitine appears to act as a peripheral thyroid hormone antagonist by inhibiting entry of thyroid hormone into the nucleus of cells. Taking L-carnitine also seems to diminish some of the symptoms of hyperthyroidism.

Likelihood Probable Evidence B
Warfarin (Coumadin)

Theoretically, L-carnitine might increase the anticoagulant effects of warfarin.
L-carnitine might increase the anticoagulant effects of acenocoumarol, a shorter-acting oral anticoagulant similar to warfarin. There is not enough information to know whether this interaction occurs with L-carnitine and warfarin.

Likelihood Possible Evidence D
L-Carnitine full monograph & interactions

Arimistane1 drug type · 4 drugs

Aromatase Inhibitors

It is believed that Arimistane inhibits the aromatase enzyme, which may interact with other aromatase inhibitors. This interaction could potentially increase the risk of side effects associated with low estrogen levels or from additive side effects, such as an increased risk of liver toxicity. It is recommended to consult with a healthcare provider before combining Arimistane with other aromatase inhibitors to assess the potential risks and benefits.

Likelihood Probable Evidence C
Arimistane full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Thor's Hammer Test Booster Blue Raspberry, from the product label.

Valhalla Labs

See all Valhalla Labs products
Name
Valhalla Labs
Street Address
31693 Eight Mile Rd. Ste 104
City
Livoria
State
MI
ZipCode
48152
Pharmacist Counseling Corner

Thor's Hammer Test Booster Blue Raspberry by Valhalla Labs: Common Questions

Does Thor's Hammer Test Booster Blue Raspberry by Valhalla Labs interact with any medications?
Yes. Based on its ingredients, Thor's Hammer Test Booster Blue Raspberry has a known interaction with 1,253 medications, including 7 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Thor's Hammer Test Booster Blue Raspberry contains 9 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take this if I'm pregnant?
The data is mixed. Calcium is rated likely safe in pregnancy at recommended amounts. However, agmatine, kudzu, and arimistane should be avoided—not enough safety information exists, and arimistane specifically may lower estrogen, which could harm a pregnancy. Resveratrol is rated likely safe, and ellagic acid has insufficient data on file. Talk with your OB/GYN or pharmacist before use.
Can I take this while breastfeeding?
Calcium is safe for breastfeeding at recommended doses. Agmatine, kudzu, arimistane, and resveratrol all lack sufficient safety data for breastfeeding and should be avoided. L-carnitine and ellagic acid also have insufficient information on file. Check with your doctor or pharmacist before starting.
What are the most common side effects?
Calcium commonly causes constipation, diarrhea, gas, and stomach upset. Agmatine, resveratrol, and kudzu may cause nausea, diarrhea, and indigestion. L-carnitine can cause abdominal pain, nausea, and a fish-like body odor. Most of these are mild and resolve if you stop taking the product.
Does this product actually boost testosterone?
The evidence isn't established in our data. Arimistane is marketed as a testosterone booster because it inhibits aromatase (an enzyme that converts testosterone to estrogen), but clinical evidence for effectiveness is rated as insufficient. The product contains no other ingredients with documented testosterone-boosting effects.
Is there a filler or is this just active ingredients?
This powder contains inactive ingredients: citric acid, FD&C Blue No. 1 food coloring, natural and artificial flavorings, sucralose (sweetener), and silicon dioxide (anti-caking agent). These are excipients—common in supplements and powders—not 'fillers' in a deceptive sense, but they are not active components.
What does each ingredient do?
Calcium supports bone strength and electrolyte balance. L-carnitine helps with energy and heart health. Resveratrol is an antioxidant studied for heart and metabolic health. Kudzu is traditionally used for hangovers and may lower blood sugar. Ellagic acid is an antioxidant from berries. Agmatine and arimistane are marketed for athletic performance and hormone modulation but lack robust evidence. 7,8-benzoflavone and mulberry extract have unclear roles in this blend.

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

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Go deeper

The Full Monographs Behind Thor's Hammer Test Booster Blue Raspberry’s Ingredients

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

Herb & supplement monograph

Calcium

Interacts with 168 drugs

Calcium is an essential mineral your body needs for strong bones, nerve signaling, and muscle function, and supplements can help fill gaps when diet falls short. Most people do best getting...

Read the full Calcium monograph → Herb & supplement monograph

Agmatine

Interacts with 258 drugs

Agmatine is a compound your body makes from the amino acid arginine, and it is sold mainly as a workout and 'pump' supplement. Human evidence for most of its claimed benefits is limited and...

Read the full Agmatine monograph → Herb & supplement monograph

L-carnitine

Interacts with 19 drugs

L-carnitine is a compound your body makes naturally and also gets from foods like meat. It helps cells turn fat into energy, and supplements are most clearly useful for people with a true ca...

Read the full L-carnitine monograph → Herb & supplement monograph

Resveratrol

Interacts with 822 drugs

Resveratrol is a plant compound found in red grapes, berries, and peanuts that is popular for heart health, anti-aging, and antioxidant support. While lab and animal studies are promising, s...

Read the full Resveratrol monograph → Herb & supplement monograph

Kudzu

Interacts with 584 drugs

Kudzu is a fast-growing vine whose root has long been used in traditional Chinese medicine and is now studied mostly for reducing alcohol intake. Early research is promising for cutting back...

Read the full Kudzu monograph → Herb & supplement monograph

Ellagic Acid

Interacts with 86 drugs

Ellagic acid is a natural plant compound (a polyphenol) found in foods like pomegranates, raspberries, strawberries, and walnuts. It is studied mostly in laboratory and animal research for a...

Read the full Ellagic Acid monograph → Herb & supplement monograph

Arimistane

Interacts with 4 drugs

Arimistane (sometimes sold as Estrovade) is a synthetic aromatase inhibitor marketed as a dietary supplement to lower estrogen and raise testosterone, often during or after steroid or prohor...

Read the full Arimistane monograph → Herb & supplement monograph

Black Mulberry

Interacts with 87 drugs

Black mulberry is a nutritious fruit rich in antioxidants and vitamins, and it is generally safe to enjoy as a food. Some early research on its leaf and fruit extracts hints at benefits for...

Read the full Black Mulberry monograph →
Sources

Sources & How We Checked

Thor's Hammer Test Booster Blue Raspberry'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 166 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Calcium 62 references
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  31. Bolland MJ, Barber PA, Doughty RN, et al. Vascular events in healthy older women receiving calcium supplementation: randomised control trial. BMJ 2008;336:262-6.
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  39. Dickinson, H. O., Nicolson, D. J., Cook, J. V., Campbell, F., Beyer, F. R., Ford, G. A., and Mason, J. Calcium supplementation for the management of primary hypertension in adults. Cochrane.Database.Syst.Rev. 2006;(2):CD004639. PubMed
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  48. Lappe J, Watson P, Travers-Gustafson D, Recker R, Garland C, Gorham E, Baggerly K, McDonnell SL. Effect of Vitamin D and Calcium Supplementation on Cancer Incidence in Older Women: A Randomized Clinical Trial. JAMA. 2017 Mar 28;317(12):1234-1243. PubMed
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  51. Roberts JL, Kiser JJ, Hindman JT, Meditz AL. Virologic failure with a raltegravir-containing antiretroviral regimen and concomitant calcium administration. Pharmacotherapy 2011;31(10):298e-302e. DOI
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  53. Storan ER, O'Gorman SM, Murphy A, Laing M. Case Report of Calciphylaxis Secondary to Calcium and Vitamin D<sub>3</sub> Supplementation. J Cutan Med Surg. 2017;21(2):162-163. DOI
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  55. Borkenhagen JF, Connor EL, Stafstrom CE. Neonatal hypocalcemic seizures due to excessive maternal calcium ingestion. Pediatr Neurol 2013;48(6):469-71. PubMed
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See these in context on the Calcium monograph →

Agmatine 3 references
  1. Piletz JE, Aricioglu F, Cheng JT, et al. Agmatine: clinical applications after 100 years in translation. Drug Discov Today 2013;18(17-18):880-93. PubMed
  2. Keynan O, Mirovsky Y, Dekel S, Gilad VH, Gilad GM. Safety and efficacy of dietary agmatine sulfate in lumbar disc-associated radiculopathy. An open-label, dose-escalating study followed by a randomized, double-blind, placebo-controlled trial. Pain Med 201 PubMed
  3. Shopsin B. The clinical antidepressant effect of exogenous agmatine is not reversed by parachlorophenylalanine: a pilot study. Acta Neuropsychiatr 2013;25(2):113-8. PubMed

See these in context on the Agmatine monograph →

L-carnitine 41 references
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  2. Anon. Carnitor (levocarnitine) package insert. Sigma-Tau Pharmaceuticals Inc, Gaithersburg, MD. December 1999.
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  13. Malaguarnera M, Cammalleri L, Gargante MP, et al. L-Carnitine treatment reduces severity of physical and mental fatigue and increases cognitive functions in centenarians: a randomized and controlled clinical trial. Am J Clin Nutr 2007;86:1738-44. PubMed
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  26. Tarighat, Esfanjani A., Mahdavi, R., Ebrahimi, Mameghani M., Talebi, M., Nikniaz, Z., and Safaiyan, A. The effects of magnesium, L-carnitine, and concurrent magnesium-L-carnitine supplementation in migraine prophylaxis. Biol.Trace Elem.Res 2012;150(1-3): PubMed
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  35. An JH, Kim YJ, Kim KJ, et al. L-carnitine supplementation for the management of fatigue in patients with hypothyroidism on levothyroxine treatment: a randomized, double-blind, placebo-controlled trial. Endocr J. 2016;63(10):885-95. PubMed
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  37. Khajeh B, Dashti-Khavidaki S, Nasiri-Toosi M, Mohammadi K, Jafari A. Effects of pre-transplant L-carnitine supplementation on primary graft dysfunction in liver transplant recipients: a pilot, randomized, placebo-controlled clinical trial. Res Pharm Sci. PubMed
  38. Kubota K, Uojima H, Shao X, et al. Additional L-carnitine Reduced the Risk of Hospitalization in Patients with Overt Hepatic Encephalopathy on Rifaximin. Dig Dis 2021. PubMed
  39. Amini L, Yaghini O, Ghazavi M, Aslani N. L-carnitine versus propranolol for pediatric migraine prophylaxis. Iran J Child Neurol 2021;15(2):77-86.
  40. Shakibaei F, Jelvani D. Effect of adding l -carnitine to risperidone on behavioral, cognitive, social, and physical symptoms in children and adolescents with autism: A randomized double-blinded placebo-controlled clinical trial. Clin Neuropharmacol 2023;4 PubMed
  41. Moustafa I, Connolly C, Anis M, Mustafa H, Oosthuizen F, Viljoen M. A prospective study to evaluate the efficacy and safety of vitamin E and levocarnitine prophylaxis against doxorubicin-induced cardiotoxicity in adult breast cancer patients. J Oncol Phar PubMed

See these in context on the L-carnitine monograph →

Resveratrol 24 references
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  2. Pace-Asciak CR, Rounova O, Hahn SE, et al. Wines and grape juices as modulators of platelet aggregation in healthy human subjects. Clin Chim Acta 1996;246:163-82. PubMed
  3. Bertelli AA, Giovannini L, Bernini W, et al. Antiplatelet activity of cis-resveratrol. Drugs Exp Clin Res 1996;22:61-3.
  4. Pace-Asciak CR, Hahn S, Diamandis EP, et al. The red wine phenolics trans-resveratrol and quercetin block human platelet aggregation and eicosanoid synthesis: implications for protection against coronary heart disease. Clin Chim Acta 1995;235:207-19.
  5. Bertelli A, Bertelli AA, Gozzini A, Giovannini L. Plasma and tissue resveratrol concentrations and pharmacological activity. Drugs Exp Clin Res 1998;24:133-8.
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Kudzu 21 references
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Ellagic Acid 9 references
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Arimistane 1 reference
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See these in context on the Arimistane monograph →

Black Mulberry 5 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.

© 2021 Therapeutic Research Center, LLC

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