Interactions on record — worth a quick check against your medications. Based on 5 of 9 ingredients. Check your meds →
Dietary supplement

Z-Shield Ingredients & Drug Interactions

by InfoWars Life

Z-Shield label
See full label image
Liquid Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

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

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

The interaction bottom line Most serious interaction: Moderate

Z-Shield is a dietary supplement by InfoWars Life with 9 active ingredients. Its ingredients are commonly taken for digestive upset and bloating, mild urinary tract flushing, water retention (mild diuretic).Based on those ingredients, 1,300 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are organic Milk Thistle, organic Cilantro, Tamarind. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Z-Shield by InfoWars Life

Ask about any prescription or over-the-counter medication and we check it for interactions with Z-Shield by InfoWars Life — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Z-Shield by InfoWars Life

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.
  • “Proprietary Blend” is a proprietary blend — the label gives one combined amount (1.23 mL) without saying how much of each component you get.

Z-Shield is a liquid with nine ingredients, five of which are active botanicals: lovage, shilajit, coriander, milk thistle, and tamarind. Lovage is traditionally used for kidney and urinary support; shilajit is a mineral-rich substance used to support energy and sexual function; coriander is an herb with a long culinary history applied to digestion; milk thistle is used to support liver health; and tamarind fruit is used for its possible anti-inflammatory and antioxidant effects.

The product also contains organic orange and organic cleavers (both checked but with no interaction data on file), a proprietary fulvic/humic acid blend, and zeolites concentrate. Inactive ingredients are vegetable glycerin and purified water.

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: support the body's natural cleansing abilities.
  • We looked for evidence on: Constipation, Diarrhea, Dyspepsia, Flatulence, Irritable bowel syndrome (IBS), Liver disease — and 4 related terms.
  • The closest evidence on file: Coriander is rated "Insufficient Reliable Evidence To Rate" for Constipation (Natural Medicines).
  • Also on file: Coriander is rated "Insufficient Reliable Evidence To Rate" for Diarrhea, Dyspepsia, Flatulence, Irritable bowel syndrome (IBS).
  • Also on file: Milk Thistle is rated "Insufficient Reliable Evidence To Rate" for Alcohol-related liver disease, Metabolic dysfunction-associated steatotic liver disease (MASLD).

The evidence for these ingredients is limited. Milk thistle shows possibly effective evidence for diabetes support, and tamarind shows possibly effective evidence for dry eye and fluorosis.

For lovage, shilajit, and coriander — across uses including Alzheimer disease, sexual dysfunction, athletic performance, anxiety, constipation, diabetes, and diarrhea — the evidence in our data is rated insufficient to judge whether they work. No effectiveness ratings are on file for the proprietary blend, orange, cleavers, fulvic/humic acids, or zeolites.

The evidence, ingredient by ingredient Lovage Shilajit Coriander Milk Thistle Tamarind

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 5 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 5 of 5.
  • General safety write-ups exist for 5 of 5.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Milk thistle and coriander are generally well tolerated in food amounts. However, lovage and coriander in concentrated medicinal doses have limited safety data and should be used only with medical guidance.

Lovage may increase your risk of sun sensitivity and photosensitivity reactions, especially with long-term use — avoid excess sun or UV exposure if you use this product. Tamarind in food amounts is safe, but large medicinal doses lack study.

Shilajit carries a contamination risk and should only be from purified, tested brands. Rare cases of allergic reactions including anaphylaxis have been reported with milk thistle and coriander.

Lovage is traditionally avoided in pregnancy because it may stimulate the uterus and menstrual flow, and safety data is insufficient while breastfeeding. Shilajit safety data in pregnancy is limited, and it should be avoided while breastfeeding.

Coriander and tamarind lack sufficient pregnancy and breastfeeding data — talk with your pharmacist or doctor for personalized advice if you are pregnant or nursing.

Side effects, ingredient by ingredient Lovage Shilajit Coriander Milk Thistle Tamarind

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

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

Why this rating?
  • 5 of the 5 matched ingredients can interact with medications — Coriander, Milk Thistle, Lovage, Tamarind, Shilajit.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications.
  • For scale: 1,301 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 Z-Shield, check the following medications: antidiabetes drugs (from shilajit, coriander, tamarind, and milk thistle), diuretics (from lovage and coriander), blood pressure medications (from coriander), CNS depressants or sedating drugs (from coriander), photosensitizing medications (from coriander and lovage), CYP2B6 substrate drugs (from milk thistle), ledipasvir, sofosbuvir, morphine, warfarin, sirolimus, ibuprofen, and aspirin. Use the medication checker on this page with your exact drugs.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

Z-Shield contains several botanicals with documented interactions affecting over 1,200 medications. If you take any blood pressure drugs, diabetes medications, diuretics, blood thinners, or sedating drugs, or if you have liver conditions, check each of your prescriptions with the tool on this page before starting.

Lovage may increase sun sensitivity, and concentrated doses of several ingredients lack safety data. Talk to your pharmacist about whether this product fits your health profile.

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

Assessment coverage: 5 of 9 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Sep 21, 2017.

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 Z-Shield, straight from the product label.

Brand InfoWars Life
Barcode (UPC) 743724205640
Net contents 2 fl. Oz.; 59.2 mL
Market status On market
Date entered into DSLD Sep 21, 2017
DSLD ID 78362
Product type Other Combinations
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, 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 Z-Shield by InfoWars Life, 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:
0.25 tsp
Maximum serving Sizes:
0.25 tsp
Servings per container
48
UPC/BARCODE
743724205640
IngredientAmount% DV
Proprietary Blend1.23 mL--
organic Orange0 NP--
organic Lovage0 NP--
Shilajit0 NP--
Fulvic/Humic Acid Blend0 NP--
organic Cilantro0 NP--
organic Milk Thistle0 NP--
organic Cleavers0 NP--
Tamarind0 NP--
Zeolites concentrate0 NP--

Other ingredients: Vegetable Glycerin, purified Water

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.
Brand IP Statement(s)

Z-Shield is a powerful formula designed to support the body's natural cleansing abilities.

Suggested/Recommended/Usage/Directions

Suggested Use: Take 1 serving, approximately 2 droppers in the morning and 1 serving in the afternoon on any empty stomach.

Precautions

Warning: Keep out of reach of children.

Consult your healthcare provider if pregnant, nursing or for any additional concerns.

Do not use if seal is broken

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.

General Statements

Toxic metal & chemical defense support

Not tested on animals

The #1 health product line suggested by Alex Jones

Seals/Symbols

GMO Free Made in USA Gluten Free 100% Vegan

Formulation

GMO Free

Gluten Free

100% Vegan

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

See for yourself

Z-Shield by InfoWars Life label

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

Z-Shield 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 Z-Shield by InfoWars Life

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

Serving size0.25 tsp Dosage formLiquid Servings per container48 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.

Proprietary Blend

1.23 mL per serving

Other (inactive) ingredients: Vegetable Glycerin, Purified Water. These complete the product’s ingredient list but are not active constituents.

Interaction report

Z-Shield by InfoWars Life Drug Interactions

Want to check YOUR meds against Z-Shield?

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
1,300Drugs
824 Moderate 476 Minor

Ingredients driving the most interactions

organic Milk Thistle 954
organic Cilantro 717
Tamarind 130
Shilajit 86
organic Lovage 75

Individual Drug Interactions

The ingredients in Z-Shield interact with 1,300 drugs. Click any drug to see the details.

5 of the 9 ingredients in Z-Shield interact with drugs. Each result below shows which ingredient is responsible. organic Milk Thistle organic Cilantro Tamarind Shilajit organic Lovage

Each ingredient & the kinds of drugs it affects

For each ingredient in Z-Shield 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.

organic Milk Thistle17 drug types · 954 drugs

Antidiabetes Drugs

Taking milk thistle with antidiabetes drugs may increase the risk of hypoglycemia.
Clinical research shows that milk thistle extract, alone or along with tree turmeric extract, can lower blood glucose levels and glycated hemoglobin (HbA1c) in patients with type 2 diabetes, including those already taking antidiabetes drugs. Additionally, animal research shows that milk thistle extract increases the metformin maximum plasma concentration and area under the curve and decreases the renal clearance of metformin, due to inhibition of the multi-drug and toxin extrusion protein 1 (MATE1) renal tubular transport protein.

Likelihood Possible Evidence B
Cytochrome P450 2B6 (Cyp2B6) Substrates

Theoretically, milk thistle might inhibit CYP2B6.
An in vitro study shows that silybin, a constituent of milk thistle, binds to and noncompetitively inhibits CYP2B6. Additionally, silybin might downregulate the expression of CYP2B6 by decreasing mRNA and protein levels.

Likelihood Possible Evidence D
Glucuronidated Drugs

Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Laboratory research shows that milk thistle constituents inhibit uridine diphosphoglucuronosyl transferase (UGT), the major phase 2 enzyme that is responsible for glucuronidation. Theoretically, this could decrease the clearance and increase levels of glucuronidated drugs. Other laboratory research suggests that a milk thistle extract of silymarin might inhibit beta-glucuronidase, although the significance of this effect is unclear.

Likelihood Possible Evidence D
Ledipasvir

Theoretically, milk thistle might increase the levels and clinical effects of ledipasvir.
Animal research in rats shows that milk thistle increases the area under the curve (AUC) for ledipasvir and slows its elimination.

Likelihood Possible Evidence D
Morphine

Theoretically, concomitant use of milk thistle with morphine might affect serum levels of morphine and either increase or decrease its effects.
Animal research shows that milk thistle reduces serum levels of morphine by up to 66%. In contrast, laboratory research shows that milk thistle constituents inhibit uridine diphosphoglucuronosyl transferase (UGT), the major phase 2 enzyme that is responsible for glucuronidation. Theoretically, this could decrease the clearance and increase morphine levels. The effect of taking milk thistle on morphine metabolism in humans is not known.

Likelihood Possible Evidence D
Raloxifene (Evista)

Theoretically, milk thistle might decrease the clearance and increase levels of raloxifene.
Laboratory research suggests that the milk thistle constituents silibinin and silymarin inhibit the glucuronidation of raloxifene in the intestines.

Likelihood Possible Evidence D
Sirolimus (Rapamune)

Milk thistle might decrease the clearance of sirolimus.
Pharmacokinetic research shows that a milk thistle extract of silymarin decreases the apparent clearance of sirolimus in hepatically impaired renal transplant patients. It is unclear if this interaction occurs in patients without hepatic impairment.

Likelihood Possible Evidence B
Sofosbuvir (Solvaldi)

Theoretically, milk thistle might decrease the levels and clinical effects of sofosbuvir.
Animal research in rats shows that milk thistle reduces the metabolism of sofosbuvir, as well as the hepatic uptake of its active metabolite.

Likelihood Possible Evidence D
Tamoxifen (Nolvadex)

Theoretically, the milk thistle constituent silibinin might increase tamoxifen levels and interfere with its conversion to an active metabolite.
Animal research suggests that the milk thistle constituent silibinin might increase plasma levels of tamoxifen and alter its conversion to an active metabolite. The mechanism appears to involve inhibition of pre-systemic metabolism of tamoxifen by cytochrome P450 (CYP) 2C9 and CYP3A4, and inhibition of P-glycoprotein-mediated efflux of tamoxifen into the intestine for excretion. Whether this interaction occurs in humans is not known.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, milk thistle might increase the effects of warfarin.
In one case report, a man stabilized on warfarin experienced an increase in INR from 2.64 to 4.12 after taking a combination product containing milk thistle 200 mg daily, as well as dandelion, wild yam, niacinamide, and vitamin B12. Levels returned to normal after stopping the supplement. Although a direct correlation between milk thistle and the change in INR cannot be confirmed, some in vitro research suggests that milk thistle might inhibit cytochrome P450 2C9 (CYP2C9), an enzyme involved in the metabolism of various drugs, including warfarin.

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

It is unclear if milk thistle inhibits CYP2C9; research is conflicting.
In vitro research suggests that milk thistle might inhibit CYP2C9. Additionally, 3 case reports from the World Health Organization (WHO) adverse drug reaction database describe increased toxicity in patients taking milk thistle and cancer medications that are CYP2C9 substrates, including imatinib and capecitabine. However, contradictory clinical research shows that milk thistle extract does not inhibit CYP2C9 or significantly affect levels of the CYP2C9 substrate tolbutamide. Differences in results could be due to differences in dosages or formulations utilized.

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

It is unclear if milk thistle inhibits CYP3A4; research is conflicting.
While laboratory research shows conflicting results, pharmacokinetic research shows that taking milk thistle extract 420-1350 mg daily does not significantly affect the metabolism of the CYP3A4 substrates irinotecan, midazolam, or indinavir. However, 8 case reports from the World Health Organization (WHO) adverse drug reaction database describe increased toxicity in patients taking milk thistle and cancer medications that are CYP3A4 substrates, including gefitinib, sorafenib, doxorubicin, and vincristine.

Likelihood Unlikely Evidence D
Estrogens

Theoretically, milk thistle might interfere with estrogen therapy through competition for estrogen receptors.
Animal research suggests that a milk thistle extract of silymarin binds to estrogen receptor beta.

Likelihood Possible Evidence D
Hmg-Coa Reductase Inhibitors ("Statins")

Theoretically, milk thistle might interfere with statin therapy by decreasing the activity of organic anion transporting polypeptide 1B1 (OATB1B1) and inhibiting breast cancer resistance protein (BCRP).
Preliminary evidence suggests that a milk thistle extract of silymarin can decrease the activity of the OATP1B1, which transports HMG-CoA reductase inhibitors into the liver to their site of action, and animal research shows this increases the maximum plasma concentration of pitavastatin and pravastatin. The silibinin component also inhibits BCRP, which transports statins from the liver into the bile for excretion. However, in a preliminary study in healthy males, silymarin 140 mg three times daily had no effect on the pharmacokinetics of a single 10 mg dose of rosuvastatin.

Likelihood Unlikely Evidence D
Indinavir (Crixivan)

Theoretically, milk thistle may induce cytochrome P450 3A4 (CYP3A4) enzymes and increase the metabolism of indinavir; however, results are conflicting.
One pharmacokinetic study shows that taking milk thistle (Standardized Milk Thistle, General Nutrition Corp.) 175 mg three times daily in combination with multiple doses of indinavir 800 mg every 8 hours decreases the mean trough levels of indinavir by 25%. However, results from the same pharmacokinetic study show that milk thistle does not affect the overall exposure to indinavir. Furthermore, two other pharmacokinetic studies show that taking specific milk thistle extract (Legalon, Rottapharm Madaus; Thisilyn, Nature's Way) 160-450 mg every 8 hours in combination with multiple doses of indinavir 800 mg every 8 hours does not reduce levels of indinavir.

Likelihood Unlikely Evidence B
Organic Anion-Transporting Polypeptide Substrates (Oatp)

Milk thistle may inhibit one form of OATP, OATP-B1, which could reduce the bioavailability and clinical effects of OATP-B1 substrates.
In vitro research shows that milk thistle inhibits OATP-B1. Two case reports from the World Health Organization (WHO) adverse drug reaction database describe increased toxicity in patients taking milk thistle and cancer medications that are OATP substrates, including sorafenib and methotrexate. OATPs are expressed in the small intestine and liver and are responsible for the uptake of drugs and other compounds into the body. Inhibition of OATP may reduce the bioavailability of oral drugs that are substrates of OATP.

Likelihood Possible Evidence D
P-Glycoprotein Substrates

Theoretically, milk thistle might increase the absorption of P-glycoprotein substrates. However, this effect does not seem to be clinically significant.
In vitro research shows that milk thistle can inhibit P-glycoprotein activity and 1 case report from the World Health Organization (WHO) adverse drug reaction database describes increased abdominal pain in a patient taking milk thistle and the cancer medication vincristine, a P-glycoprotein substrate, though this patient was also taking methotrexate. However, a small pharmacokinetic study in healthy volunteers shows that taking milk thistle (Enzymatic Therapy Inc.) 900 mg, standardized to 80% silymarin, in 3 divided doses daily for 14 days does not affect absorption of digoxin, a P-glycoprotein substrate.

Likelihood Unlikely Evidence B
organic Milk Thistle full monograph & interactions

organic Cilantro4 drug types · 717 drugs

Antidiabetes Drugs

Theoretically, coriander might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Evidence from animal research suggests that coriander fruit and coriander extract can reduce blood glucose levels. Monitor blood glucose levels closely. Dose adjustments might be necessary.

Likelihood Possible Evidence D
Antihypertensive Drugs

Theoretically, coriander might increase the risk of hypotension when taken with antihypertensive drugs.
Evidence from animal research suggests that coriander fruit can lower blood pressure.

Likelihood Possible Evidence D
Cns Depressants

Theoretically, coriander might cause additive sedative effects when taken with CNS depressants.
Evidence from animal research suggests that coriander fruit extract has sedative effects.

Likelihood Possible Evidence D
Photosensitizing Drugs

Theoretically, coriander might increase the risk of photosensitivity when taken with photosensitizing drugs.
Evidence from in vitro research suggests that coriandrin, a constituent of coriander, has photosensitizing effects.

Likelihood Possible Evidence D
organic Cilantro full monograph & interactions

Tamarind3 drug types · 130 drugs

Antidiabetes Drugs

Theoretically, tamarind seed extract might have additive effects when used with antidiabetes drugs.
Animal research suggests that an extract of tamarind seed can reduce fasting blood glucose levels. Monitor blood glucose levels closely. Dose adjustments might be necessary.

Likelihood Possible Evidence D
Aspirin

Theoretically, tamarind fruit extract might increase the effects and side effects of aspirin.
Taking tamarind fruit extract as a component of millet porridge concurrently with aspirin seems to increase aspirin absorption and blood levels.

Likelihood Possible Evidence B
Ibuprofen (Advil, Others)

Theoretically, tamarind fruit extract might increase the effects and side effects of ibuprofen.
Taking tamarind fruit extract as a component of millet porridge concurrently with ibuprofen seems to increase ibuprofen absorption and blood levels.

Likelihood Possible Evidence B
Tamarind full monograph & interactions

Shilajit1 drug type · 86 drugs

Antidiabetes Drugs

Taking shilajit with antidiabetes drugs might increase the risk of hypoglycemia.
Most human and animal research shows that shilajit can decrease fasting plasma glucose levels. In an animal model, shilajit 100 mg per kg daily enhanced the glucose-lowering ability of both glibenclamide and metformin when given in combination over a 4 week period. Monitor blood glucose levels closely. Dose adjustments might be necessary.

Likelihood Possible Evidence D
Shilajit full monograph & interactions

organic Lovage1 drug type · 75 drugs

Diuretic Drugs

Theoretically, lovage root might interfere with diuretic therapy due to its aquaretic effects.
Some diuretics include chlorothiazide (Diuril), chlorthalidone (Thalitone), furosemide (Lasix), hydrochlorothiazide (HCTZ, Hydrodiuril, Microzide), and others.

Likelihood Possible Evidence D
organic Lovage full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Z-Shield, from the product label.

InfoWars Life

See all InfoWars Life products
Name
InfoWars Life
Phone Number
1-888-253-3139
Web Address
www.infowarslife.com
Pharmacist Counseling Corner

Z-Shield by InfoWars Life: Common Questions

Does Z-Shield by InfoWars Life interact with any medications?
Yes. Based on its ingredients, Z-Shield has a known interaction with 1,300 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Z-Shield 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.
Is Z-Shield safe if I'm pregnant or breastfeeding?
Lovage is traditionally avoided in pregnancy because it may stimulate the uterus, and there isn't enough safety data for it while breastfeeding. Shilajit safety data in pregnancy is limited and it should be avoided while breastfeeding. For coriander, tamarind, and the other ingredients, there isn't enough data to say either way. Talk with your pharmacist or doctor — they can advise you based on your personal situation.
What is shilajit, and is it safe to take?
Shilajit is a mineral-rich substance used traditionally to support energy and sexual function. The main safety concern is contamination — unpurified products may contain heavy metals. Only use purified, tested brands. A rare case of allergy has been reported, and it should not be taken while breastfeeding.
Can this product make me sun-sensitive?
Yes. Both lovage and coriander can increase your risk of sun sensitivity and photosensitivity reactions, especially with long-term use. If you take Z-Shield, avoid excessive sun or UV light exposure.
Will this help my blood sugar or blood pressure?
Milk thistle shows possibly effective evidence for diabetes support. Coriander and tamarind may theoretically lower blood sugar in animal studies, but evidence in people is rated insufficient. Coriander may lower blood pressure in animal studies, but the evidence isn't established. Talk with your doctor about whether this product fits your health needs.
What are the most common side effects?
Milk thistle users report mild gastrointestinal symptoms like bloating, diarrhea, nausea, and flatulence — though these don't happen more often than with placebo. Coriander and tamarind are generally well tolerated. Rare allergic reactions, including anaphylaxis, have been reported with milk thistle and coriander.
Why does Z-Shield have so many drug interactions?
Milk thistle and the other botanicals in this product affect how your liver processes certain medications — they can slow down or speed up clearance, changing how much drug stays in your blood. This is why checking your exact medications is so important before starting.

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.

Z-Shield label
Go deeper

The Full Monographs Behind Z-Shield’s Ingredients

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

Herb & supplement monograph

Lovage

Interacts with 75 drugs

Lovage is a celery-like herb traditionally used for digestion, bloating, and as a mild diuretic to flush the urinary tract. Human evidence for these uses is very limited, and while culinary...

Read the full Lovage monograph → Herb & supplement monograph

Shilajit

Interacts with 86 drugs

Shilajit is a sticky, tar-like substance found in rocks of mountain ranges like the Himalayas, used in traditional Ayurvedic medicine for energy and vitality. Human evidence is limited and m...

Read the full Shilajit monograph → Herb & supplement monograph

Coriander

Interacts with 717 drugs

Coriander (also called cilantro) is a common cooking herb and spice that has long been used in traditional medicine for digestive complaints. As a food it is generally safe for most people,...

Read the full Coriander monograph → Herb & supplement monograph

Milk Thistle

Interacts with 954 drugs

Milk thistle is a popular herbal supplement most often used for liver health, and its main active component is a group of compounds called silymarin. While it is generally well tolerated, th...

Read the full Milk Thistle monograph → Herb & supplement monograph

Tamarind

Interacts with 130 drugs

Tamarind is a tangy tropical fruit widely used in cooking and traditional medicine, mainly for digestion and as a mild laxative. While it is a nutritious food, strong human evidence for most...

Read the full Tamarind monograph →
Sources

Sources & How We Checked

Z-Shield'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 102 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.

Lovage 10 references
  1. Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
  2. Foster S, Tyler VE. Tyler's Honest Herbal: A Sensible Guide to the Use of Herbs and Related Remedies. 3rd ed., Binghamton, NY: Haworth Herbal Press, 1993.
  3. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  4. Wichtl MW. Herbal Drugs and Phytopharmaceuticals. Ed. N.M. Bisset. Stuttgart: Medpharm GmbH Scientific Publishers, 1994.
  5. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  6. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  7. Robbers JE, Tyler VE. Tyler's Herbs of Choice: The Therapeutic Use of Phytomedicinals. New York, NY: The Haworth Herbal Press, 1999.
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Shilajit 8 references
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See these in context on the Shilajit monograph →

Coriander 12 references
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Milk Thistle 69 references
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Tamarind 3 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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