Prevagen Review 2023: Ingredients, Side Effects, & Alternatives

Updated on January 2, 2023
 by — reviewed by Jason Williams, PhD (Contributor: George Collins / Editor: Yoko Hill)

Do you find yourself feeling more forgetful than usual? Do you want to boost your memory and stay sharp as you age? If so, then look no further.

This article will review the popular nootropic supplement Prevagen, to help you determine if it’s a good fit for your memory needs.

Introduction to Prevagen

Prevagen is a dietary supplement that is marketed as an aid for improving memory, particularly in older adults. It is made with apoaequorin, an ingredient said to be derived from a jellyfish protein. The company behind this supplement, Quincy Bioscience, claims that Prevagen can protect brain cells and improve cognitive function. In addition, the company also claims that it can improve learning ability, concentration, and memory recall.

prevagen reviews

However, there is little clinical evidence to support these claims and the product is largely criticized as unproven. In this blog post, we will review Prevagen in detail, including its ingredients, side effects, customer reviews, and alternatives. We will also answer some of the most frequently asked questions about Prevagen.

Pros and Cons of Prevagen

Prevagen is marketed as an over-the-counter supplement specifically created for older adults to improve memory. While there are some positive customer reviews, the overall scientific evidence for the efficacy of Prevagen is not strong. In this section, we will discuss the pros and cons of taking Prevagen.

The primary benefit of Prevagen is that it contains the protein, apoaequorin, which may have neuroprotective effects. Apoaequorin is a peptide derived from a jellyfish that is believed to help protect neurons from oxidative damage. Additionally, Prevagen contains Vitamin D3 which is important for healthy brain function.

However, there is limited evidence to support the claims that Prevagen actually improves memory. In fact, two out of the three clinical studies cited by the manufacturer of Prevagen did not show any significant improvement in memory. Furthermore, the supplement is expensive and may not be cost-effective for some people.


  • May improve brain function
  • May improve memory and recall
  • May protect the brain from age-related decline
  • May support cognitive health
  • Has ingredients that are believed to be safe and natural


  • Can be expensive for some users
  • Not all ingredients have been clinically tested
  • Results may vary from person to person
  • Possible side effects, including headache, nausea, dizziness, and insomnia
  • Contains milk, fish and shellfish derivatives, which can cause allergic reactions in some people

Overall, we would not recommend taking Prevagen, due to the lack of evidence and the potential side effects. If you are looking for a supplement to improve memory, there are other options available that may provide better results.

Ingredients in Prevagen

Prevagen is a non-prescription supplement specifically prepared for older people. It contains the active ingredient Apoaequorin, which is a protein derived from a type of jellyfish. This protein is said to improve memory, but there is limited scientific evidence to back up this claim. Furthermore, the supplement contains other ingredients such as Vitamin D3, Vitamin B12, and Magnesium.

These ingredients are said to help improve cognitive function, but there is no scientific research to prove this. Some of the other ingredients in the supplement may cause side effects, so it is important to speak to a doctor before taking Prevagen.

Side Effects of Prevagen

In addition to the potential memory benefits, there are some potential side effects of Prevagen. The most common side effects reported from users include headache, nausea, dizziness, and difficulty sleeping. Some users have also reported an increase in anxiety. It is important to note that the side effects are usually mild and short-lived.

However, it is important to consult a doctor before taking any supplement, especially if you are already taking any medications or have any underlying health conditions.

Clinical Studies on Prevagen

The previous section discussed the ingredients in Prevagen and their potential effects on memory. In this section, we will take a look at the clinical studies that have been conducted on Prevagen. The manufacturer of the product claims that by consuming Prevagen, you can improve your memory loss associated with aging. However, it is important to note that there is limited evidence to support this claim.

Two of the three clinical studies cited by the company have focused on the effects of Apoaequorin, the main active ingredient in Prevagen. While these studies showed some improvement in cognitive function in older adults, the results were not statistically significant. Furthermore, the studies did not compare Prevagen to any other memory supplements or treatments. Therefore, it is difficult to draw any conclusions about the effectiveness of Prevagen from these studies.

It is also important to note that the third clinical study was conducted on mice, and thus cannot be used to make any conclusions about the effectiveness of Prevagen in humans. Therefore, while the clinical evidence is limited, it does not appear to support the manufacturer's claims.

Prevagen Reviews from Customers

Prevagen has thousands of reviews on Amazon for each formulation, and the 30-capsule container of regular strength Prevagen averages a 4.3 out of 5-star rating. Customers consistently report that they experienced improved memory, increased focus and better mental clarity after taking the supplement. However, customer reviews may be positive, but the product is largely criticized as unproven by commercial Prevagen reviews 2020. While some customers reported experiencing side effects such as nausea, headache and dizziness, these seemed to be very rare.

Overall, it is important to remember that Prevagen is still largely unproven, and that the supplement has not been approved by the FDA.

Alternatives to Prevagen

If you’re looking for better alternatives to Prevagen, there are several options available.

1. Nooceptin

Nooceptin is an alternative to Prevagen that is designed to help improve cognitive health and is formulated with a combination of natural ingredients. These ingredients include Citicoline, Lion's Mane Mushroom, and Bacopa Monnieri, which are all known for their ability to support cognitive function.

Additionally, Nooceptin is a natural supplement that is free from any additives or preservatives. Studies have shown that users may experience improved memory, focus, and mental clarity with regular use. Furthermore, Nooceptin is also vegan-friendly and non-GMO, making it a great choice for those looking for an alternative to Prevagen.

2. NooCube

NooCube is a natural brain supplement designed to improve concentration, focus, and mental clarity. It contains a blend of vitamins, minerals, and amino acids that work together to support healthy brain function. It contains nootropic ingredients like Alpha GPC, Huperzine A, and Bacopa Monnieri, which are known to improve cognitive performance. In comparison to Prevagen, NooCube does not contain any apoaequorin, which is the active ingredient in Prevagen. Instead, NooCube contains natural ingredients that have been proven to improve memory and focus.

Additionally, NooCube is backed by scientific studies and customer reviews, which are much more reliable than those of Prevagen. Ultimately, NooCube may be a better choice than Prevagen for those looking to improve their memory and focus.

3. Mind Lab Pro

Mind Lab Pro is an all-natural nootropic supplement that provides a wide range of cognitive benefits. It is created by Opti-Nutra, a company with a strong track record in the supplement industry. It is composed of 11 natural ingredients, including Lion's Mane Mushroom, Rhodiola Rosea and Phosphatidylserine. These ingredients are clinically studied to enhance focus, learning, memory, and overall cognitive performance.

Mind Lab Pro is also free from any artificial additives, fillers or synthetic chemicals, making it a safe and reliable choice for anyone looking for an effective nootropic supplement.


In conclusion, it's clear that Prevagen is not the best choice for improving memory. The manufacturer's claims are largely unsubstantiated, and customer reviews are largely critical. While there may be some potential benefits, there are also some serious side effects to consider.

Alternatives such as Nooceptin, NooCube, and Mind Lab Pro offer similar benefits without the potential side effects. Ultimately, it's important to do your own research and make an informed decision when it comes to choosing a supplement to improve your memory.