Adderin is a brain supplement sold by KNH Online that promises to give you a more powerful brain by improving memory, focus, processing speed, and flow state. They state Adderin contains a scientifically engineered stack of nootropics (aka smart drugs) that will give you more brain boost and energy without jitters or side effects.

What’s in Adderin that Will Make me Super Smart?

Adderin lists a half dozen ingredients typical of many so-called “smart drugs” that promise to give you amazing mental powers. You should know that these ingredients or Adderin’s claims have not been evaluated by the FDA meaning they have not been rigorously studied on human beings and proven to work. 

Let’s take a look-see, shall we?


They say: “Helps proper functioning of neurotransmission, integral to healthy transmission. 

We found: According to WebMD Alpha-GPC is a chemical byproduct of soy or other plants and appears to increase acetylcholine in the brain, important for memory functions. However, they state there is still insufficient evidence taking it in a pill plays any role in improving memory, thinking, or learning. (We did find an Italian study of 2044 patients that seemed to show it helped those with cognitive problems related to Alzheimers or stroke.)

SIDE EFFECTS: Heartburn, headache, insomnia, dizziness, skin rash, and confusion.


They say: “benefits your brain by helping you create neurotransmitters that promote mental awareness.”

We found: L-Tyrosine is an amino acid that is one of the building blocks of protein that help the brain keep alert. There is some early research taking L-Tyrosine helps with mental performance under stressful conditions. However, researchers have noted this has little use outside of the military and that its long-term safety is not known. 

SIDE EFFECTS: Nausea, fatigue, headache, joint pain.

Bacopa Monnieri

They say: “increases cerebral blood flow and cognitive function.” 

We found: Bacopa has been used in Eastern medicine for thousands of years for memory function. A scientific review of the studies conducted stated the ingredient shows promise but research is still in its infancy. 

SIDE EFFECTS: Increased bowel movements, cramps, nausea, dry mouth, fatigue. 


They say: “increases the brain’s utilization of glucose, increasing ATP production.”

We found: Vinpcetine is a synthetic compound with insufficient evidence that it helps healthy adults improve memory function. 

SIDE EFFECTS: Nausea, headache, pain, weakened immune system.


They say: “an inhibitory neurotransmitter that prevents over-excitement to help maintain focus.”

We found: GABA is a chemical found in and made by our brain. A small study conducted on 13 people seemed to show taking a GABA supplement reduced anxiety under stressful conditions. WebMD states that there is still insufficient evidence, however, that it really helps people calm down. 

Huperzine A

They say: “Inhibits acetylcholinesterase, the enzyme that breaks down acetylcholine.”

We found: Huperzine A is an alkaloid derived from a Chinese moss that the Mayo Clinic says small early studies have shown it may help protect the brain and/or prevent Alzheimer’s. However, these studies have been very short term (3 months or less) so more studies are needed to determine long-term safety.

SIDE EFFECTS: Nausea, vomiting. 


There is some preliminary evidence for a few of the ingredients in Adderin that they may help with memory or cognitive function, but their long-term safety is unknown. While some of these may give you the “smarts” they may also make you nauseous or give you the runs.

What’s the Difference Between Adderin and Adderall?

Adderin sounds a lot like Adderall, a prescription medication used to treat ADHD or narcolepsy that’s often abused by students in as a stimulant to help them focus before a test. Adderall, similar to an amphetamine, also produces a euphoric feeling when ingested. Recent studies have suggested that in spite of all the hype Adderall may not actually help students perform better on tests. 

Adderall also has a long list of side effects including loss of appetite, dry mouth, nausea, vomiting, behavior changes, high blood pressure, numbness, severe headache, and more.

Adderall can be habit-forming and you can quickly build up a tolerance, requiring higher doses for the same effect and is only supposed to be prescribed for certain conditions as mentioned above by a licensed physician and its use closely monitored.

On the other hand, Adderin can be purchased by anyone for any condition; while it does have a few possible side effects, it is generally considered safe and won’t give you a euphoric high.

In addition, the fine print notes: “Adderin is not a suitable replacement for a prescription medication and should not be used as a substitute.”

In other words, Adderin is hoping you will associate their product with Adderall but is not intended for the same use.

How Much is a Bottle of Adderin?

  • 1 Month = $54.80 ($49.85 plus $4.95 shipping)
  • 3 Month = $118.77 ($113.82 plus $4.95 shipping)
  • 5 Month = $154.90 ($149.95 plus $4.95 shipping)

The fine print of Adderin’s Terms and Conditions states that a 30-day refund is offered for damaged or defective products, which must be returned in original packaging at your expense. Refunds will not include the shipping fees. They add you may be able to cancel an order before it is shipped by calling (727) 498-4811. 

There is also language in the Terms about a subscription plan, but we could find no further information about it on the Adderin website. When we called the above number, a recorded message gave us another number (813) 336-2390. After a long hold time, we were finally connected to a customer service rep, who told us there is no subscription plan for Adderin.

Bottom Line: Is Adderin a Good Way to Boost Brain Power?

As we illustrated above, there is some preliminary research that some of these ingredients may help with cognitive function. Yet the benefits from taking these types of smart drugs is still far from proven fact. 

In an article about smart drugs for Men’s Health, Emily Deans, a Massachusetts psychiatrist said: “While supplement companies often have an impressive list of references for their products, those references are usually rodent studies of the individual ingredients, not human trials of the product.” An investigation by ABC News also found little evidence outside of a lab or test tube that smart drugs provide the benefits they promise. 

In addition, we’d like to point out:

  • There is no specific information about how much of any ingredient is in Adderin.
  • Adderin does not appear to be tested by an unbiased 3rd party lab.
  • There are only refunds available for unused bottles.

Alternatives to Adderin

If you are thinking about buying any kind of nootropic, we suggest reading our smart guide to buying smart drugs. In it, we go over in greater detail the evidence for some of their claims as well as what to look for from a manufacturer.

Or, as suggested by the users of Reddit on their guide to smart drugs, take a jog to the park, as it has similar brain-enhancing benefits of any brain supplement, minus any side effects. A good night’s rest helps with focus the next morning, too.

Let us know your experience with Adderin below!