Stallion Power Side Effects and Safety: Who Should Ask a Doctor First
There is no published safety study of Stallion Power as a finished product, so no one can give you a true list of its side effects. What we can do is look at the label, the safety information for each listed herb, and the FDA's repeated warnings about products sold as "male enhancement". This page organizes that information so you know what to ask your doctor or pharmacist.
Part 1. The three risks, in order of seriousness
- Hidden prescription drugs. Not a known fact about this product, but a documented problem across the category. Section 3 explains it.
- Interactions with medicines you already take. Several listed ingredients interact with common prescriptions. Section 2 has a table.
- Ordinary side effects of the ingredients. Stomach upset, sleep trouble, jitters and, rarely, liver problems. Section 4 covers these.
Part 2. Who should speak to a clinician before using any blend like this
The label itself says to consult a doctor if you are pregnant or nursing, take medications or have a medical condition. That covers a lot of adults. Here is how that sentence applies in practice.
| If this applies to you | Why it matters | What to do |
|---|---|---|
| You take nitrates (for chest pain) or have heart disease | Nitrates combined with erectile-dysfunction drugs can drop blood pressure dangerously. Some "male enhancement" products have been found to contain those drugs without saying so. | Ask your cardiologist or pharmacist before any such product. Do not stop your medicine on your own. |
| You take blood pressure medicine | NIH's NCCIH lists blood pressure drugs among possible ashwagandha interactions. L-arginine is a building block for nitric oxide, which relaxes blood vessels, so pharmacists often ask about it. | Show the label to your pharmacist and ask about combined effects. |
| You have diabetes or take diabetes medicine | NCCIH lists diabetes drugs among possible ashwagandha interactions. Each gummy also has 3 g of added sugar. | Ask whether it fits your plan and monitor your numbers. |
| You have a thyroid or autoimmune condition | NCCIH says people with thyroid or autoimmune disorders should not use ashwagandha, and it may interact with thyroid hormone medicine. | Avoid unless your clinician agrees. |
| You have liver disease or have had liver trouble | NCCIH reports rare liver injury with ashwagandha and with concentrated green tea extracts. Case reports exist for horny goat weed. | Avoid unless your clinician agrees. |
| You have hormone-sensitive prostate cancer | NCCIH says ashwagandha may raise testosterone and should be avoided in this case. | Ask your oncologist or urologist. |
| You take sedatives, seizure medicine or immune-suppressing drugs | All three appear on NCCIH's list of possible ashwagandha interactions. | Ask your prescriber. |
| You are sensitive to caffeine, have palpitations or trouble sleeping | The FDA lists faster heart rate, jitters, higher blood pressure and insomnia as effects of too much caffeine. The gummy has only 5 mg, but other sources add up. | Count your total daily caffeine. |
| You are having surgery soon | NCCIH advises people about to have surgery not to use ashwagandha. | Tell your surgical team about every supplement. |
| You are pregnant or breastfeeding | The label says to consult a doctor, and NCCIH advises against ashwagandha in both cases. | Do not use without medical advice. (The seller's terms also say buyers must be at least 18.) |
This table is a starting list, not a full interaction check. A pharmacist can check your exact medicines in a few minutes, and most do it free.
Part 3. The hidden-drug problem
The FDA maintains a public page of notifications about sexual enhancement and energy products. It was current as of September 25, 2026 and lists dozens of products going back to 2012. The agency says the list covers only a small fraction of contaminated products on the market, that such products "pose a serious health risk and are not guaranteed to work", and that they are often falsely marketed as dietary supplements, food or "all natural" remedies, sometimes with many positive reviews.
What did lab tests find? In one example notice (Alpha-Male, February 2020), the FDA found sildenafil and tadalafil, the active ingredients of Viagra and Cialis, which were not named on the label. The notice explained that these drugs can interact with nitrates and cause a dangerous fall in blood pressure, particularly for people with diabetes, high blood pressure, high cholesterol or heart disease.
What this does not mean
It does not mean Stallion Power contains any drug. We have no test result for it and we are not suggesting it does. The label lists none.
What it does mean
A label cannot prove a product is clean. Absence from the FDA list is not a safety clearance, and the FDA says so itself.
Warning signs in any product
Effects that appear within an hour (supplements rarely work that fast), a "pharmaceutical-strength" promise, unexplained headaches, flushing or dizziness shortly after use, or a name that changes between sellers.
Part 4. Ordinary side effects to watch for
These come from the safety information on individual ingredients, not from trials of the gummy.
- Stomach and gut. NCCIH lists drowsiness, stomach upset, diarrhea and vomiting for ashwagandha, and nausea, constipation and abdominal discomfort for green tea extract. The gummy also contains sorbitol, a sugar alcohol that can loosen stools in some people.
- Sleep and nerves. Caffeine can disturb sleep or cause jitters, especially late in the day.
- Blood pressure and heart rate. Green tea extract has been linked to increased blood pressure; caffeine can speed the heart. Notice lightheadedness, pounding heartbeat or headaches.
- Liver. Rare but serious. A case report on green tea extract describes acute liver injury, and published case reports describe liver injury and muscle damage linked to horny goat weed. Symptoms include dark urine, pale stools, yellow eyes, upper right abdominal pain and extreme tiredness.
- Allergy. Any plant extract can trigger a rash or swelling. Stop at the first sign of hives or swelling of the lips or throat and seek urgent care if breathing is affected.
- Erections lasting more than four hours. The NIH's NIDDK says to seek care right away for an erection lasting longer than four hours after taking an oral erectile-dysfunction medicine. If it ever happens after a "natural" product, that could signal a hidden drug.
Part 5. A stop-and-check routine
- Stop the product if you notice any symptom above.
- Keep the bottle, the lot number and the receipt. Do not throw them away.
- Call a clinician or the Poison Help line at 1-800-222-1222 if you have taken more than the label directs or feel unwell.
- Report the problem. The FDA asks people to report supplement problems through its Safety Reporting Portal at safetyreporting.hhs.gov. The FDA's MedWatch page is also available, and reports go to the right office. Anyone can file one, and you can choose whether your contact details are shared with the maker.
- Tell the seller, in writing, so there is a record for any refund request.
Part 6. How to check a product against the FDA list
- Open the FDA's sexual enhancement and energy product notifications.
- Search the page for the product name, the brand name and any variations.
- If nothing appears, remember the FDA's own caution that absence does not mean a product is safe.
- Ask the seller whether the finished product has been tested for undeclared drugs. Ask for the report.
- Talk to a clinician. The FDA advises speaking with a health care professional before buying or trying new products of this kind.
Frequently asked questions
What are the side effects of Stallion Power?
There is no published study of this product, so none are documented for the finished gummy. Individual ingredients have known effects such as stomach upset, sleep disturbance and, rarely, liver injury.
Can I take Stallion Power with blood pressure medicine?
Ask your pharmacist or prescriber first. NIH lists blood pressure drugs among possible ashwagandha interactions, and L-arginine affects nitric oxide, which relaxes blood vessels.
Does it contain hidden Viagra or Cialis ingredients?
We do not know. The label lists none and we have no lab report. The FDA has found such drugs in many other "male enhancement" products, which is why a clean-looking label is not enough.
How do I report a bad reaction?
Contact a clinician first, then report through the FDA Safety Reporting Portal or MedWatch. Keep the bottle and lot number.
Is it safe for men over 50?
Age alone is not the issue; medicines and conditions are. Men over 50 are more likely to take blood pressure, heart or diabetes medicine, so a pharmacist check matters more.
Sources
Last reviewed October 12, 2026. This page is general information and does not replace medical advice.
- FDA, Sexual Enhancement and Energy Product Notifications (content current as of September 25, 2026).
- FDA, Public Notification: Alpha-Male contains hidden drug ingredients (February 5, 2020).
- FDA, Questions and Answers on Dietary Supplements.
- FDA, Spilling the Beans: How Much Caffeine Is Too Much?
- FDA, MedWatch online reporting; Safety Reporting Portal.
- NIH NCCIH, Ashwagandha; Green Tea.
- NIH NIDDK, Erectile Dysfunction: Treatment.
- Case reports: green tea extract-associated acute liver injury; liver injury with horny goat weed; Epimedium toxicity with muscle spasms.
- Seller label and pages, getstallionpower.com (read October 12, 2026).