Herb & supplement monograph

African Wild Potato Drug Interactions, Uses, Effectiveness, Safety & More

Check African Wild Potato against your medication

Add one medication
African Wild Potato
+
Start typing any prescription or over-the-counter drug name.
Reviewed by licensed pharmacists Sourced from Natural Medicines

African Wild Potato Drug Interactions: The Bottom Line

From the HelloPharmacist Editorial Team · Updated July 2026

Based on the available evidence, the overall risk of a clinically significant African Wild Potato drug interaction appears low for most people, since nearly every listed interaction is theoretical rather than confirmed in humans. None of the interactions are rated major, all carry a moderate rating, and each rests on lab or animal research rather than human studies.

Interactions deserving the most attention

The pairing most worth watching is with diabetes medications, because animal research suggests African Wild Potato may lower blood sugar, and an added drop could matter for someone whose glucose is tightly managed. The HIV drug indinavir also stands out, as lab and animal work suggest the herb could raise its levels in the body. Beyond these, nothing else rises above the general theoretical concern.

What the rest of the list means

The long list of medications reflects lab findings that African Wild Potato may slow the enzymes and transport proteins the body uses to clear many drugs, not proof that each combination is harmful. Notably, in one human study the herb did not change how the body handled efavirenz, a drug cleared by one of those enzymes, suggesting some predicted effects may not play out in people.

Check your medications against African Wild Potato

Based on HelloPharmacist’s African Wild Potato interaction data and reviewed under our editorial standards.

Interaction report

Drugs that interact with African Wild Potato

1007 medications have a known interaction with African Wild Potato, graded by severity. Select any drug for the full evidence-based detail.

2,830 drugs
Ado-trastuzumab EmtansineKadcyla› AbemaciclibVerzenio› Abiraterone› Abiraterone AcetateYonsa, Zytiga› AbrocitinibCibinqo› AcalabrutinibCalquence› AcarboseGlucobay, Prandase, Precose› AcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength› Acetaminophen, AspirinGemnisyn› Acetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine› Acetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu› Acetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more› Acetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more› Acetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine› Acetaminophen, Butalbital, CodeineBancap w/ Codeine› Acetaminophen, Butalbital, Codeine PhosphatePhrenilin #3› Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound› Acetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more› Acetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3› Acetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS› Acetaminophen, Caffeine, IsomethepteneMigralam› Acetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual› Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief› Acetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex› Acetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu› Acetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu› Acetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief› Acetaminophen, Chlorpheniramine, Dextromethorphan, PseudoephedrineChildren's Tylenol Cold Plus Cough, Tylenol Cold Ex Strength› Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG› Acetaminophen, Chlorpheniramine, PhenylephrineAlka-Seltzer PLUS, Histex SR, Protid›
Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

  • Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
  • Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
  • Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
  • No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

  • Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
  • Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
  • Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

  • Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
  • Each drug listed above links to the full report for that exact African Wild Potato combination — clinical detail, likelihood, evidence level, and citations.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
The big picture

The kinds of drugs African Wild Potato affects

Every type of medication (drug category) African Wild Potato is known to interact with. Open any category for the detail — or search your exact drug in the checker above.

All 9 drug categories African Wild Potato interacts with
Antidiabetes DrugsCytochrome P450 1a2 (cyp1a2) SubstratesCytochrome P450 2b6 (cyp2b6) SubstratesCytochrome P450 2c8 (cyp2c8) SubstratesCytochrome P450 2c9 (cyp2c9) SubstratesCytochrome P450 3a4 (cyp3a4) SubstratesIndinavir (crixivan)Organic Anion Transporter 1 (oat1) SubstratesOrganic Anion Transporter 3 (oat3) Substrates
Antidiabetes Drugs

Evidence from animal research suggests that African wild potato lowers blood glucose levels. So far, this effect has not been shown in humans. Theoretically, concomitant use of African wild potato and antidiabetes drugs might increase the risk of hypoglycemia. Dose adjustments might be necessary. Some antidiabetes drugs include glimepiride (Amaryl), glyburide (DiaBeta, Glynase PresTab, Micronase), insulin, pioglitazone (Actos), rosiglitazone (Avandia), and others.

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

In vitro research shows that African wild potato extract inhibits cytochrome P450 1A2 (CYP1A2). However, this effect has yet to be reported in humans. Until more is known, use with caution. Theoretically, concomitant use of African wild potato with CYP1A2 substrates might increase the risk for adverse effects from these substrates. Some of these drugs include amitriptyline (Elavil), haloperidol (Haldol), ondansetron (Zofran), propranolol (Inderal), theophylline (Theo-Dur, others), verapamil (Calan, Isoptin, others), and others.

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

In vitro research shows that African wild potato extract inhibits cytochrome P450 2B6 (CYP2B6). However, this effect has yet to be reported in humans. Until more is known, use with caution. Theoretically, concomitant use of African wild potato with CYP2B6 substrates might increase the risk for adverse effects from these substrates. Some of these drugs include ketamine (Ketalar), phenobarbital, orphenadrine (Norflex), secobarbital (Seconal), and dexamethasone (Decadron).

Likelihood Possible Evidence D
Cytochrome P450 2C8 (Cyp2C8) Substrates

In vitro research shows that African wild potato extract might inhibit cytochrome P450 2C8 (CYP2C8). However, this effect has yet to be reported in humans. Until more is known, use with caution. Theoretically, concomitant use of African wild potato with CYP2C8 substrates might increase the risk for adverse effects from these substrates. Some drugs metabolized by CYP2C8 include amiodarone (Cordarone), paclitaxel (Taxol); nonsteroidal anti-inflammatory drugs (NSAIDs) such as diclofenac (Cataflam, Voltaren) and ibuprofen (Motrin); rosiglitazone (Avandia); and others.

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

In vitro research shows that African wild potato extract inhibits cytochrome P450 2C9 (CYP2C9). However, this effect has yet to be reported in humans. Until more is known, use with caution. Theoretically, concomitant use of African wild potato with CYP2C9 substrates might increase the risk for adverse effects from these substrates. Some of these drugs include nonsteroidal anti-inflammatory drugs (NSAIDs) such as diclofenac (Cataflam, Voltaren), ibuprofen (Motrin), meloxicam (Mobic), and piroxicam (Feldene); celecoxib (Celebrex); amitriptyline (Elavil); warfarin (Coumadin); glipizide (Glucotrol); losartan (Cozaar); and others.

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

In vitro evidence shows that African wild potato extract can inhibit cytochrome P450 3A4 (CYP3A4) enzyme activity by up to 86%. Theoretically, African wild potato might increase levels of drugs metabolized by CYP3A4. However, in human research, African wild potato does not seem to affect the pharmacokinetics of Efavirenz, a CYP3A4 substrate. Until more is known, use African wild potato cautiously or avoid in patients taking drugs metabolized by CYP3A4. Some drugs metabolized by CYP3A4 include lovastatin (Mevacor), ketoconazole (Nizoral), itraconazole (Sporanox), fexofenadine (Allegra), triazolam (Halcion), and numerous others.

Likelihood Possible Evidence D
Indinavir (Crixivan)

In vitro and animal research show that African wild potato can cause pharmacokinetic interactions that might lead to elevated serum levels of indinavir. While the exact mechanism of interaction is unknown, it is thought to be due to the inhibition of cytochrome P450 3A4 (CYP3A4) by African wild potato. Theoretically, concomitant use of African wild potato with indinavir might increase the effects and adverse effects of indinavir.

Likelihood Possible Evidence D
Organic Anion Transporter 1 (Oat1) Substrates

In vitro research shows that African wild potato extract inhibits OAT1. This drug transport protein is involved in renal tubular uptake of some drugs from the blood and then elimination in the urine. Inhibition of this transporter decreases renal elimination and increases drug levels in the body. The clinical significance of this in humans is not known.
Some substrates of OAT1 include acyclovir (Zovirax), adefovir (Hepsera), cephalosporins, cidofovir (Vistide), cimetidine (Tagamet), ciprofloxacin (Cipro), furosemide (Lasix), hydrochlorothiazide (HCTZ), NSAIDs, oseltamivir (Tamiflu), pravastatin (Pravachol), probenecid, simvastatin (Zocor), and zidovudine (Retrovir).

Likelihood Possible Evidence D
Organic Anion Transporter 3 (Oat3) Substrates

In vitro evidence shows that African wild potato extract inhibits OAT3. This drug transport protein is involved in renal tubular uptake of some drugs from the blood and then elimination in the urine. Inhibition of this transporter decreases renal elimination and increases drug levels in the body. The clinical significance of this in humans is not known.
Some substrates of OAT3 include cephalosporins, famotidine (Pepcid), furosemide (Lasix), hydrochlorothiazide (HCTZ), methotrexate, NSAIDs, probenecid, ranitidine (Zantac).

Likelihood Possible Evidence D
Monograph

African Wild Potato: Uses, Safety & Side Effects

The bottom line

African Wild Potato (Hypoxis hemerocallidea) is a southern African plant traditionally used as a tonic and for immune, prostate, and inflammatory complaints. Human evidence for these uses is very limited, and safety—especially during pregnancy, breastfeeding, or with serious illness—is not well established. Talk to a pharmacist or doctor before using it.

Scientific name
Hypoxis hemerocallidea
Family
Hypoxidaceae
Part used
Corm (underground tuber/rootstock)
Common forms
Capsules, tablets, tinctures, dried corm extracts, traditional decoctions
People commonly use it for
  • Immune support
  • Prostate and urinary symptoms
  • Inflammation
  • General tonic/wellness
  • Skin conditions

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance
OverallUse caution

Limited human safety data and unclear effective doses mean it should be used cautiously.

PregnancyInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full pregnancy detail
BreastfeedingInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Jump to a section

Overview

African Wild Potato comes from the plant Hypoxis hemerocallidea, which grows naturally in grasslands across southern Africa. Despite its name, it is not a true potato. The part most often used is the underground corm (a swollen, tuber-like rootstock).

It has a long history in traditional southern African medicine, where it is taken as a general tonic and used for a range of complaints. Today it is sold as capsules, tablets, tinctures, and dried extracts. Some products are marketed for immune support and prostate health.

How it works

The plant contains a compound called hypoxoside, which the body can convert into a substance called rooperol. In laboratory studies, rooperol has shown antioxidant, anti-inflammatory, and possible anti-cancer activity, and the corm also contains plant sterols (phytosterols) that may affect inflammation and the immune system.

It is important to understand that these mechanisms are mostly based on test-tube and animal research. What happens in a lab dish does not always translate to real benefits in the human body, and the amounts used in research may differ from what is in commercial products.

Effectiveness

Does African Wild Potato work?

Evidence overview · 2 uses evaluated
1 Possibly effective 1 Insufficient evidence
How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.
2Likely EffectiveGood evidence, though not yet conclusive.
3Possibly EffectiveSome evidence suggests a benefit.
4Possibly IneffectiveSome evidence it may not help.
5Likely IneffectiveFairly strong evidence it doesn’t help.
6IneffectiveStrong evidence it doesn’t work.
7Insufficient Reliable Evidence to RateToo little research to say either way.
Possibly Effective Benign prostatic hyperplasia (BPH)
Rating & evidence shown verbatim from Natural Medicines

Clinical trials in patients with BPH show that taking beta-sitosterol (Harzol, Azuprostat), extracted from African wild potato, 60-130 mg in divided doses daily, either alone or in combination with other beta-sitosterol sources, for 6-18 months seems to reduce urinary symptoms, improve urine flow, and improve quality of life when compared with placebo. The effect of whole African wild potato is unclear.

Also studied for 1 condition — evidence insufficient to rate
Insufficient Reliable Evidence To Rate Lung cancer
Rating & evidence shown verbatim from Natural Medicines

A very small clinical study in patients with lung cancer shows that taking hypoxoside, a constituent of African wild potato extract, does not seem to prolong survival when compared with historical control. The validity of these findings is limited by the small study size and lack of a control group.

Sources Ref 13584

Source & disclaimer. Effectiveness ratings and evidence summaries are provided by Natural Medicines (Therapeutic Research Center) and shown as licensed. Where Natural Medicines hasn’t rated a use, HelloPharmacist’s pharmacists may add their own reviewed rating and evidence (each such entry is labeled). This is educational information, not medical advice — talk with your pharmacist or doctor before starting, stopping, or changing a supplement.

Safety & precautions

There is not enough reliable human data to call African Wild Potato clearly safe. Because some of its compounds may affect the immune system and inflammation, people with autoimmune conditions or those taking medicines that suppress the immune system should be especially cautious.

There have been concerns that, in some people or at higher doses, it could affect blood cells or the body in ways that are not fully understood. People with serious medical conditions—such as cancer, HIV, kidney, or liver problems—should not use it in place of proven treatment and should speak with their doctor first.

For pregnancy and breastfeeding, there is no dependable safety information. Because of this uncertainty, it is best to avoid it during these times. Always tell your pharmacist or doctor about any supplement you take.

Side effects

Reported side effects are not well documented because formal human studies are limited. As with many herbal products, possible effects include stomach upset, nausea, or digestive discomfort.

More serious concerns have been raised about possible effects on blood cells and the immune system, though these are not fully confirmed in people. Stop using it and seek medical care if you notice an allergic reaction (such as rash, swelling, or trouble breathing) or any unusual symptoms.

African Wild Potato: Reported Adverse Effects

Documented safety reports on African Wild Potato from the evidence-graded Natural Medicines (TRC Healthcare) database, shown word-for-word from the licensed record.

Reports by condition
Anxiety Neurologic/CNS

Orally, hypoxoside, an African wild potato constituent, has been reported to cause anxiety in one small, uncontrolled study.

  1. Smit BJ, Albrecht CF, Liebenberg RW, et al A phase I trial of hypoxoside as an oral prodrug for cancer therapy--absence of toxicity. S Afr Med J 1995;85:865-70.
Constipation Gastrointestinal
Erectile dysfunction (ED) Genitourinary

Orally, the beta-sitosterol constituent of African wild potato has been reported to cause erectile dysfunction and loss of libido.

  1. Berges RR, Windeler J, Trampisch HJ, et al. Randomized, placebo-controlled, double-blind clinical trial of beta-sitosterol in patients with benign prostatic hyperplasia. Lancet 1995;345:1529-32.
DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.

Adverse-effects data: Natural Medicines, Therapeutic Research Center

Dosing

There is no well-established, standardized dose for African Wild Potato. Products vary widely in strength and in how they are prepared, so it is hard to compare one to another.

If you choose to use it, follow the directions on the product label and do not exceed them. A pharmacist can help you review a specific product, check for quality concerns, and make sure it is appropriate for you. Choose products from reputable manufacturers, since supplement quality is not tightly regulated.

Pregnancy & Breastfeeding

African Wild Potato & Pregnancy

Insufficient reliable information

Insufficient reliable information available; avoid using.

African Wild Potato & Breastfeeding

Insufficient reliable information

Insufficient reliable information available; avoid using.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.

© 2026 Therapeutic Research Center

Pregnancy & lactation ratings: Natural Medicines, Therapeutic Research Center

References & further reading

The 10 references that drive our African Wild Potato monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Berges RR, Windeler J, Trampisch HJ, et al. Randomised, placebo-controlled, double-blind clinical trial of beta-sitosterol in patients with benign prostatic hyperplasia. Beta-sitosterol Study Group. Lancet 1995;345:1529-32.
  2. Klippel KF, Hiltl DM, Schipp B. A multicentric, placebo-controlled, double-blind clinical trial of beta-sitosterol (phytosterol) for the treatment of benign prostatic hyperplasia. Br J Urol 1997;80:427-32.
  3. Berges RR, Windeler J, Trampisch HJ, et al. Randomized, placebo-controlled, double-blind clinical trial of beta-sitosterol in patients with benign prostatic hyperplasia. Lancet 1995;345:1529-32.
  4. Berges RR, Kassen A, Senge T. Treatment of symptomatic benign prostatic hyperplasia with beta-sitosterol: an 18-month follow-up. BJU Int 2000;85:842-6.
  5. Mahomed IM, Ojewole JA. Hypoglycemic effect of Hypoxis hemerocallidea corm (African potato) aqueous extract in rats. Methods Find Exp Clin Pharmacol 2003;25:617-23. PubMed
  6. Smit BJ, Albrecht CF, Liebenberg RW, et al A phase I trial of hypoxoside as an oral prodrug for cancer therapy--absence of toxicity. S Afr Med J 1995;85:865-70.
  7. Wilt TJ, Ishani A, Rutks I, et al. Phytotherapy for benign prostatic hyperplasia. Public Health Nutr 2000;3(4A):459-472. PubMed
  8. Jalloh MA, Gregory PJ, Hein D, et al. Dietary supplement interactions with antiretrovirals: a systematic review. Int J STD AIDS. 2017 Jan;28(1):4-15. PubMed
  9. Fasinu PS, Gutmann H, Schiller H, Bouic PJ, Rosenkranz B. The potential of Hypoxis hemerocallidea for herb-drug interaction. Pharm Biol. 2013 Dec;51(12):1499-507.
  10. Havenga K, Abay E, Wiesner L, Viljoen A, Steyn D, Hamman J. The in vitro and in vivo effects of Hypoxis hemerocallidea on indinavir pharmacokinetics: modulation of efflux. Planta Med. 2018;84(12-13):895-901. PubMed
Keep reading

This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.

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

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Brand directory

Brands that make products with African Wild Potato

1 brand in our database make a supplement containing African Wild Potato.

Product directory

Supplement products with African Wild Potato

1 product in our database contain African Wild Potato. Open any to see its full ingredient list and every drug interaction we check.

Pharmacist Counseling Corner

African Wild Potato: Common Questions

What is African Wild Potato used for, and does it work?
People use African Wild Potato for many reasons, but the evidence varies by use. According to the Natural Medicines database, there is at least some clinical evidence supporting African Wild Potato for Benign prostatic hyperplasia (BPH). For most other uses it has been studied for, the evidence is currently insufficient to rate. See the graded list on this page, and always confirm with your pharmacist or doctor.
Does African Wild Potato interact with prescription medications?
Yes. We list 1007 medications with a known interaction with African Wild Potato. Use the checker above to see how African Wild Potato interacts with a specific drug.
How are African Wild Potato interactions rated?
Each interaction is graded major, moderate, or minor based on how clinically significant it is and the strength of the evidence behind it. Major interactions are the most serious and are best avoided, or used only under close professional supervision.
Is it safe to take African Wild Potato with my medications?
It depends on the specific medication. Some combinations are fine, while others call for monitoring, timing changes, or should be avoided. Check your exact drug above and confirm with your pharmacist or doctor before starting, stopping, or changing anything.
Where does this African Wild Potato interaction information come from?
Our interaction data is built on the Natural Medicines database — an evidence-graded reference for vitamins, herbs, and supplements — and is reviewed by licensed HelloPharmacist pharmacists, who may add clinical context.
What is African Wild Potato used for?
It is traditionally used as a general tonic and for immune support, prostate and urinary symptoms, and inflammation. However, strong human evidence for these uses is lacking.
Is African Wild Potato a real potato?
No. Despite the name, it is the corm (rootstock) of the plant Hypoxis hemerocallidea and is not related to the potatoes you eat.
Is it safe to take during pregnancy or breastfeeding?
There is not enough reliable safety information, so it is best to avoid it while pregnant or breastfeeding.
Can it cure or treat serious diseases like cancer or HIV?
No. While some lab studies look at its compounds, there is no proof it treats these conditions, and it should never replace proven medical care. Talk to your doctor.

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

Keep exploring

Products that contain African Wild Potato

A rotating sample of real supplements in our database that list African Wild Potato — open any to see its full ingredients and every drug interaction we check.

Have a question about African Wild Potato?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist