Blog
Brain Supplement Side Effects: What to Expect by Ingredient
Brain supplement side effects depend on the ingredient. Niacin can cause flushing at about 30 mg or more of nicotinic acid. Arginine can upset the stomach and add to blood pressure drugs. Beta-alanine causes tingling, mostly at 800 mg or more. VapoCept's listed amounts are below those levels, but no safety study of VapoCept exists.
Written by the VapoCept label deskUpdated · 4 min read
Start here01
What side effects do brain supplements commonly cause?
It depends on the ingredient family, not on the word "brain" on the front.
NIH's office says side effects are most likely at high doses, when supplements replace prescribed medicine, or when many are combined (NIH ODS, Dietary supplements: what you need to know). Stomach upset, flushing, tingling and changes in blood pressure are the ones tied to the families below.
Stimulants and herbal extracts sit outside VapoCept's panel, and we cite no source for their effects. Ask a pharmacist about any you take.
By family02
Which side effects go with which ingredient?
Each family has a known effect and a level where it appears.
| Family | Known effect | VapoCept line (as listed) |
|---|---|---|
| B vitamin: niacin | Flushing from about 30 mg of nicotinic acid; liver harm only at far higher doses | 7.5 mg NE |
| Amino acid: arginine | Stomach upset; can add to blood pressure drugs | 200 mg plus 200 mg AKG |
| Amino acid: citrulline | Stomach discomfort in one study | 100 mg plus 100 mg |
| Amino acid: beta-alanine | Tingling at about 800 mg or more | 40 mg |
| Mineral: calcium | Spacing rules with some medicines | 18 mg |
B vitamins03
Can niacin in a brain supplement cause flushing?
At about 30 mg or more of nicotinic acid, yes. NIH's fact sheet describes a red, hot, itchy face, arms and chest (NIH ODS, Niacin (consumer)).
VapoCept lists 7.5 mg NE, about 21% of the 35 mg supplement upper limit by our arithmetic. The form is not named, so we do not say which type it is. If you take other niacin products, add them up.
VapoCept: 30 capsules, 30-day bottleOne capsule a day · 2, 3 or 6 bottles · $49 to $79 a bottle per the brand information, confirm at checkout
See packsAmino acids04
What are the side effects of arginine, citrulline and beta-alanine?
Stomach upset is the usual one, tingling is the beta-alanine one, and arginine has medicine cautions.
Memorial Sloan Kettering lists stomach pain, bloating, nausea and diarrhea for arginine (MSK, Arginine (About Herbs)). The listed 40 mg of beta-alanine is about 5% of the 800 mg where tingling is reported. The capsule is shown below by weight; the side effects page has the full cautions.
about 666 mgof listed ingredients, as listed in the brand's panel
- Niacin7.5 mg NE1.1%
- Calcium18 mg2.7%
- L-Arginine200 mg30.1%
- L-Arginine AKG200 mg30.1%
- L-Citrulline HCl100 mg15.0%
- L-Citrulline Malate100 mg15.0%
- Beta-Alanine40 mg6.0%
Share by listed weight. The capsule shell and any fillers are not in the list, because the other-ingredients text was not supplied. Niacin and calcium are tiny by weight, like the vitamins on most labels.
When it goes wrong05
What should you do if you feel unwell on a supplement?
Stop it, call a clinician, and report the reaction.
For sudden severe symptoms, call 911. The packs are below for anyone who has checked with a professional first.
90-day supply
3 bottles: 90 days
$69a bottle · $207 for 3 · per the brand information
Ships from the U.S. · 60-day guarantee per the sales page
Order 3 bottles
180-day supply
6 bottles: 180 days
$49a bottle · $294 for 6 · per the brand information
Ships from the U.S. · 60-day guarantee per the sales page
Order 6 bottlesPrices follow the brand information; confirm the live price at checkout. A 2-bottle pack is also offered. Check your medicines with your doctor or pharmacist before you order.
FAQ06
VapoCept questions people ask
Why does niacin make my face red?
Niacin in the form of nicotinic acid widens small blood vessels in the skin, which causes flushing, warmth and itching. NIH describes it at about 30 mg or more. The effect is usually harmless but unpleasant.
Can supplements cause headaches or stomach pain?
Yes. Stomach pain, bloating and nausea are reported with arginine, and headache can follow flushing. Taking a supplement with water and food can matter, but ask a pharmacist, because directions differ by product.
Do amino acid supplements affect blood pressure?
They can. Arginine and citrulline lowered blood pressure slightly at gram doses in studies. Anyone on blood pressure medicine should ask a doctor first, since effects could add together.
What does tingling from a supplement mean?
Tingling, called paresthesia, is the known effect of beta-alanine, mostly at 800 mg or more. It is not considered serious. Persistent or unusual tingling is a reason to call a clinician.
Sources (3)
- ArginineMemorial Sloan Kettering Cancer Center (About Herbs), 2022
- Niacin: Fact Sheet for ConsumersNIH Office of Dietary Supplements, 2021
- Dietary Supplements: What You Need to KnowNIH Office of Dietary Supplements, 2023
Who wrote this07
Written and reviewed by
Pages built from the brand information, the brand's images and linked NIH, FDA, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site of Vapocepts, the U.S. stocking partner for VapoCept. It is not the manufacturer and it is not the sales page. We earn money when you buy through our order links.
Keep reading
More about VapoCept
U.S. stocking partner for VapoCept
Ready to try VapoCept?
Check your medicines first, especially blood pressure, nitrate or erectile dysfunction medicine, then pick a supply. One capsule a day; one bottle lasts a month. The checkout shows the live price and the guarantee terms before you pay.
- Secure checkout on the sales site
- 60-day guarantee (per the sales page)
- Ships from the U.S.
