Ingredient 4 of 8
Nettle Root in SodaPeak: Label Amount, Prostate Research and Medicine Cautions
Nettle root is fourth of eight in SodaPeak's 1,200 mg blend, so a 2-capsule serving holds at most 300 mg. One 620-patient prostate trial reported fewer urinary symptoms, but a single author ran it (Safarinejad 2005: Nettle for BPH), and RxList rates the evidence insufficient (RxList: Stinging nettle). Nettle may lower blood sugar and blood pressure and raise lithium levels.
Written by the SodaPeak editorial teamUpdated
The basics
What is nettle root?
Nettle root comes from stinging nettle, a leafy weed known for the itchy sting of its hairs. The root grows underground and has no sting.
Leaf and root are sold for different reasons. Root extracts are marketed mainly for men's urinary symptoms, while the leaf is more often used as a food or tea. The SodaPeak label names "Nettle Extract (Urtica Dioica L.) Root", so this is the root form.
Nettle root is not a nutrient your body needs. It has no Daily Value. The profile table puts the label facts next to the research.
| Label name | Nettle Extract (Urtica Dioica L.) Root |
|---|---|
| What it is | Urtica dioica root · Root extract |
| Position on the label | 4 of 8 in the blend (labels list blend ingredients from most to least by weight) |
| Amount per serving (2 capsules) | Not disclosed; at most 300 mg by label math |
| Amount used in research | One 620-man BPH trial; dose not stated in its abstract |
| Strength of evidence | Insufficient to rate |
| Why it is used | Stinging nettle root studied for urinary symptoms |
| Main caution | May lower blood sugar and blood pressure; raises lithium levels. |
Label math
How much nettle root is in SodaPeak?
No amount is printed. Nettle root is the fourth name inside the 1,200 mg Test Boost Proprietary Blend, which gives a single total for eight ingredients.
Under FDA labeling rules, blend ingredients appear from most to least by weight (FDA labeling guide ch. IV (blends)). Three ingredients come first, and each must weigh at least as much as nettle. So nettle can hold no more than a quarter of the blend: 1,200 divided by 4, or at most 300 mg per 2 capsules.
| Daily dose on the label | Blend weight | Nettle root ceiling | Likely real amount |
|---|---|---|---|
| 1 capsule | 600 mg | at most 150 mg | Not published |
| 2 capsules | 1,200 mg | at most 300 mg | Not published |
That 300 mg only happens if the first four ingredients split the blend evenly and the last four weigh nothing. Neither is realistic. Expect less. You can see nettle's line on the real panel at the SodaPeak Supplement Facts.
The evidence
What did the big nettle root trial find?
It reported real improvement, with an asterisk. In a 2005 study in the Journal of Herbal Pharmacotherapy, Safarinejad gave nettle root or placebo to 620 patients with benign prostatic hyperplasia (BPH) (Safarinejad 2005: Nettle for BPH).
Symptoms
81% of 287 men on nettle improved, against 16% of 271 on placebo, over the 6-month blinded phase (Safarinejad 2005: Nettle for BPH).
Flow and size
Urine flow and leftover urine got better, and prostate size dropped a little (Safarinejad 2005: Nettle for BPH).
Hormones and PSA
Testosterone and PSA stayed the same, so nettle did not move hormones in this trial (Safarinejad 2005: Nettle for BPH).
One author, one center
A single researcher at a single site ran it, and he asked for confirming trials himself (Safarinejad 2005: Nettle for BPH).
One strong result is a reason to look harder, not a settled answer. That is why RxList rates nettle for BPH as "Insufficient Evidence to Rate" (RxList: Stinging nettle). It notes root use for up to 24 months may ease symptoms but may not improve flow.
Side by side
How does SodaPeak's nettle root compare with the trial?
A direct comparison is not possible. The trial abstract does not state its daily dose, and the SodaPeak label does not state its nettle amount (Safarinejad 2005: Nettle for BPH).
| Measure | SodaPeak, 2 capsules | Research |
|---|---|---|
| Daily amount | at most 300 mg | Not stated in the abstract |
| Length of use | Bottle lasts 30 days | 6 months blinded, up to 18 months open (Safarinejad 2005: Nettle for BPH) |
| Who was studied | Not published | Patients with BPH |
| Other herbs mixed in | Seven | None: nettle root alone |
| Evidence rating | Not published | Insufficient to rate (RxList: Stinging nettle) |
Time is the clearest gap. Trial results came after months of daily use. A single bottle at 2 capsules a day runs out in 30 days, which is also the length of the eBay return window.
Safety
What are the side effects of nettle root?
Side effects look mild. RxList calls nettle possibly safe for up to two years and lists stomach upset and sweating (RxList: Stinging nettle). The 2005 trial did not identify any (Safarinejad 2005: Nettle for BPH).
- Stomach upset is the most likely complaint.
- Nettle acts a little like a water pill, so you may urinate more.
- RxList calls it likely unsafe in pregnancy (RxList: Stinging nettle).
- People with kidney problems or low blood pressure should take extra care (RxList: Stinging nettle).
A reaction could come from any of the eight herbs and extras. See the full list of SodaPeak side effects for the rest of the blend.
Medicines
Which medicines interact with nettle root?
RxList lists five moderate interactions. The ones that matter most involve lithium, diabetes medicine and blood pressure medicine (RxList: Stinging nettle).
| Medicine | What may happen | What to ask your doctor |
|---|---|---|
| Lithium | Its water-pill effect may raise lithium levels | Should my level be checked? |
| Diabetes medicine | Blood sugar may drop too low | How often should I test? |
| Blood pressure medicine | Blood pressure may drop too far | Is a herbal blend safe with my dose? |
| Sedatives | More drowsiness | Should I avoid it with my sleep aid? |
| Warfarin | Its vitamin K content may weaken warfarin | Could it change my INR? |
Nettle is not alone in the capsule. Sarsaparilla can also raise lithium, and horny goat weed may lower blood pressure (RxList: Sarsaparilla) (RxList: Horny goat weed).
Our take
Is the nettle root in SodaPeak worth it?
It is one of the more interesting herbs in the blend, but not a reason to buy on its own. The single large trial looks promising, yet nobody has confirmed it, and SodaPeak hides the dose.
In its favor
- A 620-patient trial reported fewer symptoms
- Few side effects in research
- Did not change PSA or testosterone
Against it
- One unconfirmed, single-author trial
- Amount hidden; trial dose unknown
- Interacts with lithium and diabetes medicine
Urinary changes in men over 40 are common and usually treatable. The SodaPeak men's health guide explains which symptoms to raise with a doctor.
Keep exploring
What are the other SodaPeak ingredients?
Nettle root comes right after saw palmetto and right before wild yam. Each one has a page built the same way.
FAQ
Nettle root in SodaPeak: common questions
How much nettle root is in SodaPeak?
SodaPeak does not list a nettle root amount. It is fourth in a 1,200 mg blend that runs from heaviest to lightest, so it holds at most 300 mg per 2 capsules and 150 mg per capsule. The real figure is likely lower.
Does nettle root help with frequent urination?
It might, but the proof is thin. One 620-patient trial by Safarinejad found 81% improved on nettle versus 16% on placebo, yet a single author ran it. RxList rates nettle for BPH as insufficient evidence. Frequent urination should be checked by a doctor.
Is nettle root the same as nettle leaf?
No. Both come from stinging nettle, but the root is sold mainly for men's urinary symptoms and the leaf mostly as a food or tea. SodaPeak's label specifies the root, listed as Nettle Extract (Urtica Dioica L.) Root.
Does nettle root change testosterone levels?
The big nettle trial found no change. Safarinejad's 2005 study of 620 patients reported that testosterone and PSA stayed the same. SodaPeak makes no testosterone claim, and low testosterone is diagnosed only with blood tests.
Can I take nettle root with lithium?
Check with your doctor before you start. RxList says nettle acts like a water pill, which may raise lithium to unsafe levels. SodaPeak also contains sarsaparilla, which carries the same lithium warning, so the combined effect is unknown.
Is nettle root safe for diabetics?
It needs care. RxList warns that nettle may lower blood sugar, which could drop it too low when combined with diabetes medicine. If you have diabetes, check with your doctor and watch your readings closely if you start SodaPeak.
Who wrote this
Written and reviewed by
Plain-language pages built from the bottle label, the order page and linked public health sources such as NIH, FDA and CDC.
Last updated . Read our editorial standards and how we check reviews. This website is run by a U.S. stocking partner for SodaPeak, not by the manufacturer. We earn money when you buy through our order links.
Keep reading
More about SodaPeak
Ingredients
All eight SodaPeak ingredients in label order, with the most each can weigh and what the research says.
Read more
Men's health guide
Why ED can flag heart disease or diabetes, what urinary changes mean, and where a supplement fits.
Read moreSupplement Facts
Every line of the SodaPeak label in plain English, plus the three things it leaves out.
Read moreU.S. stocking partner for SodaPeak
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