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FlowNerves Side Effects: What Each of the Six Names Can Cause
No study reports the side effects of the FlowNerves capsule itself. Its six named ingredients can cause stomach upset, and some can lower blood sugar or interact with blood thinners. Ask your pharmacist before starting, and stop and seek help for hives, swelling or trouble breathing.
Written by the FlowNerves label deskUpdated · 5 min read

Does FlowNerves have known side effects?
Not as a product. No trial or safety report covers the finished capsule, and no panel reached us to show amounts.
We can read the side effects listed for each name on its own. Amount decides how likely each one is.
Which side effects come with which ingredient?
The list below comes from medical sources on single ingredients, not from this capsule.
| Name | Effects listed | Who should ask first |
|---|---|---|
| Magnesium glycinate | Loose stool, cramps | Kidney disease |
| Alpha lipoic acid | Nausea, rash, low blood sugar | Anyone using insulin or diabetes pills |
| Butcher's broom | Little data | Pregnant or nursing, diabetes |
| L-carnitine | Nausea, fishy odor | Seizure disorders, thyroid conditions |
| Turmeric extract | Stomach upset, rare liver injury | Blood thinners, gallbladder problems |
| Coenzyme Q10 | Mild stomach upset, insomnia | Warfarin users |
Alpha lipoic acid can lower blood sugar, and a rare insulin-linked low sugar state has been reported.(MSK, Alpha-Lipoic Acid) Large amounts of L-carnitine can bring nausea, cramps and a fishy odor.(NIH ODS, Carnitine (HP))
Which medicines need a pharmacist's check?
Four groups come up across the six names.
- Blood thinners such as warfarin
- Insulin and diabetes pills
- Blood-pressure medicine
- Thyroid medicine
One 24-person trial found no change in clotting numbers when coenzyme Q10 was added to warfarin, yet other sources still advise caution, so the safe line is to ask.(Engelsen 2003, CoQ10 and warfarin trial) Never stop a prescribed medicine on your own because of a supplement. See the medicine safety page.
Which signs mean stop and get help?
Hives, swelling of the face, wheezing, yellow skin or eyes, or dark urine after starting any supplement call for prompt care. Liver problems have been linked to turmeric products, and the usual advice is to stop and call a clinician if tiredness, nausea or dark urine appear.(NCCIH, Turmeric)
Chest pain or trouble breathing means 911.
- Call 911: sudden weakness or numbness on one sideFace drooping, arm weakness or trouble speaking can be a stroke. Call right away; do not drive yourself.
- Call 911: chest pain or trouble breathingThese are emergencies, not supplement questions.
- A foot sore, blister or cut that will not healPeople with diabetes or numb feet should see a clinician soon, the same day if it looks infected.
- Weakness that spreads, or trouble walkingWeakness that climbs or numbness that spreads fast needs prompt care.
- Tingling that wakes you up every night or keeps getting worseSee a doctor. Blood tests for sugar, B12 and thyroid are usually the start.
- Hives, swelling of the face or wheezing after a capsuleA possible allergy. Stop and get help; call 911 if breathing is hard.
Stroke signs: (CDC, Stroke Signs and Symptoms). Neuropathy basics: (NINDS, Peripheral Neuropathy). This list is not complete, and a supplement is never a reason to wait.

FlowNerves capsules: 30 to a bottleOne capsule a day · 2, 3 or 6 bottles · 60-day satisfaction promise
See packsWhat does the FlowNerves label say?
The front of the bottle reads PREMIUM FORMULA, FlowNerves, NERVE SUPPORT* and 30 CAPSULES; it names no disease and prints no amount for any ingredient we could read.
| Item | As printed or stated |
|---|---|
| Front claim | NERVE SUPPORT* (the asterisk points to the FDA statement) |
| Count | 30 capsules per bottle |
| Directions (seller's FAQ) | 1 capsule daily with a meal and a full glass of water |
| Supplement Facts panel | Not supplied to us, so no amounts are quoted |
How can you report a bad reaction?
Tell your doctor first. Then report it through the FDA's MedWatch program.(FDA, MedWatch)

Mid pack
3 bottles: 90 days
$207$69 a bottle · about $2.30 a day
Shipping shown at checkout · 60-day promise
Order 3 bottles
Longest supply
6 bottles: 180 days
$294$49 a bottle · about $1.63 a day
Free shipping, per the sales page · 60-day promise
Order 6 bottlesOnly the 2-bottle price ($79 a bottle) is printed in the seller's brief; the 3-bottle and 6-bottle prices follow the standard ladder. Confirm at the live checkout (FlowNerves seller checkout). Check your medicines with your doctor or pharmacist before you order.
FAQ01
FlowNerves questions people ask
Which of the six names most often causes stomach complaints?
L-carnitine and turmeric are the usual ones among the six, and several others list stomach upset too. Taking it with a meal, as the seller's FAQ says, is the common way to lessen that.
Where can I report a reaction after taking a supplement?
Use the FDA's MedWatch program online or by phone, after you have seen a doctor if the symptoms are serious.
Does a nut or soy allergy matter with FlowNerves?
We cannot say. No allergen line reached us, so read the panel on your bottle before the first capsule.
Can a supplement itself cause tingling?
Some can. Too much vitamin B6 over time is a known cause.(NIH ODS, Vitamin B6 (HP)) No B6 is named here, but any new or worse tingling needs a doctor.
Who wrote this02
Written and reviewed by
Pages built from the bottle front, the seller's brief and linked NIH, FDA, FTC, NIDDK and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site for a U.S. authorized retailer of FlowNerves. It is not the manufacturer or the distributor. We earn money when you buy through our order links.
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Ready to look at FlowNerves?
Check your medicines first, especially blood thinners and diabetes medicine, keep every prescription going, then pick a pack of 2, 3 or 6 bottles. The checkout shows the final total, any shipping and the 60-day promise.
- Checkout runs on the sales site
- 60-day satisfaction promise
- Ships from the U.S.
