Ingredient 9 of 9
Neem in Prostadine: A Traditional Leaf With Little Human Evidence
Neem is the ninth and last line on the Prostadine info page. Memorial Sloan Kettering says studies on its safety and effectiveness are lacking. Swallowed neem oil has caused serious poisoning, though the info page does not say whether leaf, oil or extract is used. The amount is not printed.
Written by the Prostadine label deskUpdated
What it is01
What neem is, and which part is meant
Neem (Azadirachta indica) is a tree native to the Indian subcontinent. Its leaves, bark, seeds and oil have all been used in traditional and Ayurvedic practice, often for skin and general wellness.
The Prostadine info page lists “Neem” last, with the benefit lines “Strong antioxidant benefits” and “Sleep supporting properties”. Those are exactly the same two lines given to shilajit, which tells us they are generic wording rather than findings specific to neem.
The info page does not say which part of the tree is used. That matters for safety, because the neem leaf, bark and seed oil are not interchangeable. The brand's image shows leaves with a stone mortar holding green paste, which suggests leaf, but a photograph for a web page is not a label.
| Name on the info page | Neem |
|---|---|
| What it is | Azadirachta indica leaf |
| Place on the info page | 9 of 9 (not a verified weight order) |
| Amount in Prostadine | Not printed in any image we have |
| Amount used in research | No studied dose found |
| Strength of evidence | Studies on safety and effectiveness are lacking (MSKCC) |
| Marketed or traditional use | Ayurvedic leaf and oil |
| Main caution | Neem oil swallowed has caused serious poisoning; leaf extracts are less studied. |
| Info-page benefit lines | “Strong antioxidant benefits” / “Sleep supporting properties” |
The evidence02
What Memorial Sloan Kettering says
The most useful summary we found is from Memorial Sloan Kettering's integrative medicine service. It says neem has been used in traditional and Ayurvedic medicine, but studies on safety and effectiveness are lacking (MSK, Neem). That sentence is the whole evidence base for the two benefit lines on the info page: antioxidant and sleep.
An antioxidant effect in a laboratory dish does not show an effect in a person. Sleep is a measurable outcome, and studies of it use sleep diaries or devices. We found no trial of neem for sleep. Without one, the line is a hope.
| Question | What the source says |
|---|---|
| Is neem effective for any of these uses? | Studies on safety and effectiveness are lacking (MSK, Neem) |
| Is there a human trial for sleep? | None found in our search |
| Is there a prostate trial? | None found in our search |
| Is there a safe dose for a daily supplement? | No studied dose found; the amount in Prostadine is not printed |
Safety03
Neem oil and neem leaf are different things
Memorial Sloan Kettering reports that swallowing neem oil has caused severe poisoning in children and adults, with seizures, coma and some deaths (MSK, Neem). Rare case reports of oral neem products describe vomiting, drowsiness, diarrhea, vision loss and nervous system toxicity (MSK, Neem).
Those reports involve oil and unspecified oral products, not a leaf extract in a small daily dose, and the info page does not say it uses oil. But the fact that the form is unspecified is the point. A buyer cannot check which part of the tree is in the bottle.
If you take Prostadine and notice vomiting, unusual sleepiness, confusion or vision changes, stop and seek medical help. Keep the bottle to show the clinician.
Medicines04
Neem and the enzymes that process medicines
In laboratory tests, neem extract inhibited liver enzymes called CYP3A4/5, CYP2C8 and CYP2C9, which help the body process many medicines (MSK, Neem). The clinical relevance is unknown, so this is a reason to ask, not a reason to panic.
Many common prescriptions are processed by these enzymes, including some used for the heart, blood pressure and cholesterol. If you take any regular prescription, ask a pharmacist whether neem matters for it. See the medicines page for the general rules, and keep taking your medicine unless your doctor says otherwise.
The same caution applies in pregnancy and for children, since neither group has safety data for this product. The info page sets no age limit, and the label images show no warnings panel.
Prostadine: from $49 a bottle60 mL · 2 mL a day · free US shipping on 3 or 6 · 60-day money-back guarantee
See packsBefore you buy05
Four questions to put to the seller about neem
Because so little is published, the most useful information is whatever the maker can supply. A careful seller should be able to answer all four in a short email, and the answers are worth keeping with your order records in case you later ask for a refund.
Which part of the tree?
Leaf, bark and oil are not the same. Ask for the plant part in the batch you will receive.
What form and strength?
A powdered leaf, a water extract and a concentrated extract differ. Ask for the ratio or the marker compound, if there is one.
How many milligrams per serving?
Only an amount lets you tell a token inclusion from a meaningful dose. Ask for the figure in the same units as the panel.
Has this batch been tested?
Ask for the certificate of analysis with the lot number, and see the batch verification page for what a real one shows.
If you get no reply within a week or so, you have learned something useful about how the seller handles questions, which is also how it may handle a refund request. The refund window on the info page is 60 days, and the refund policy page explains how to use it.
Verdict06
What the evidence supports
What is in its favour
- A long traditional use in the region where it grows
- The safety concerns found involve oil, which may not be what is in the bottle
What counts against it
- Studies on safety and effectiveness are lacking (MSK, Neem)
- Part of the plant and the amount are not stated
- Generic benefit lines shared with shilajit
Of the nine lines, neem has the least published evidence for any claim. That does not make it dangerous in a small dose of leaf extract, but it makes it a line a buyer should ask the seller about. Compare it with the rest on the ingredients page, or ask the questions listed on the legit check page.
- Neem. Memorial Sloan Kettering Cancer Center, Integrative Medicine, 2023.'Neem has been used in traditional and Ayurvedic medicine, but studies on safety and effectiveness are lacking.' Swallowing neem oil has caused severe poisoning in children and adults, with seizures, coma and some deaths. Rare oral case reports: vomiting, drowsiness, diarrhea, vision loss, nervous system toxicity. In vitro, neem extract inhibited CYP3A4/5, CYP2C8 and CYP2C9; clinical relevance unknown.
FAQ07
Prostadine questions people ask
Is neem safe to take?
Evidence on safety is thin. Memorial Sloan Kettering says studies on safety and effectiveness are lacking, and that swallowed neem oil has caused severe poisoning (MSK, Neem). The info page does not say which part of the tree is used.
Does neem help sleep?
We found no trial showing that it does. The info page gives neem and shilajit the same two lines, “Strong antioxidant benefits” and “Sleep supporting properties”.
Can neem interact with medicines?
In laboratory tests neem extract inhibited liver enzymes that process many drugs, though the clinical meaning is unknown (MSK, Neem). Ask a pharmacist if you take regular prescriptions.
How much neem is in Prostadine?
No amount is printed in any image or page we have, and no studied dose was found. A Supplement Facts panel would show the figure.
Who wrote this08
Written and reviewed by
Pages built from the bottle photos, the info page and linked NIH, FDA, NCI, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by a licensed U.S. retail desk for Prostadine, not by the manufacturer. We earn money when you buy through our order links.
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