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Seredyn is a dietary supplement manufactured by the BioNeurix Corporation. The company markets Seredyn as an effective solution for controlling anxiety symptoms quickly. They claim that Seredyn “reduces feelings of worry and anxiety within 15-30 minutes after a single dose.”Source Its primary ingredients are L-Theanine, Passion Flower, Valerian, Niacinamide, and Magnesium Taurinate.Source In this article, we will perform an analysis of Seredyn’s active and inactive ingredients, efficacy, side effects, customer reviews, any supporting scientific research literature, and provide guidance on where to purchase it.

Analysis of Ingredients

Seredyn contains the following active ingredients (click the name of the ingredients to read a more detailed description of them):

Active Ingredient Description
L-Theanine L-thenanine is an amino acid found in green tea and in some mushrooms. A Japanese study has suggested that the oral intake of l-theanine provides anti-stress benefits by inhibiting cortical neuron excitation. L-theanine allows for enhanced awareness and mental clarity without drowsiness or agitation.
Passionflower Passiflora incarnata is a species of passionflower with anxiolytic and sedative properties. It is hypothesized to work via modulation of the GABA system.
Valerian Valerian (Valeriana officinalis) is a perennial herb with anxiolytic and sedative properties. Like certain other medicinal herbs, it is hypothesized to act via the GABA receptor system.
Niacinamide Niacinamide is a chemical variant of Vitamin B3, also known as niacin. The difference between the two is that niacinamide does not have the toxicity of niacin. It has been theorized to have a similar mechanism of action as benzodiazepines without the related side effects.
Magnesium Taurinate There isn’t a lot of research on the Internet pertaining to magnesium taurinate. There is even a general lack of scientific literature on the subject. However, the European Food Safety Authority released a document which states that magnesium taurinate is not a safety concern and is a valid source of magnesium supplementation.

Efficacy & Supporting Scientific Literature

Given the presence of herbal ingredients which have been found to have a scientifically-proven anxiolytic effect, one would assume that Seredyn is efficacious.

The manufacturer does not provide any double-blind studies which measure the efficacy of Seredyn. However, they provide a page with links to various studies supporting the anxiolytic effects of the individual ingredients.

Given the lack of high-quality scientific studies pertaining directly to Seredyn, it is not possible to say whether or not the supplement is effective. However, we will examine customer reviews of Seredyn in this article in order to provide you with a rough approximation of its efficacy.

Side Effects

The manufacturer of Seredyn claims that the side effects related to the product are mild and transitory. Here are the side effects the manufacturer lists:

  • Drowsiness
  • Fatigue
  • Stomach pain
  • Headache
  • Restlessness
  • Morning grogginess (if taken before bed)
  • Increasing the effects of sedative drugs
  • Lowering of blood pressure

Customer Reviews

In this section, we will examine the customer reviews on Amazon to acquire a non-scientific sense of the efficacy and quality of the product.

A pervasive problem on Amazon is the widespread use of paid reviews. Given the low quality of the high rating reviews on Seredyn, it is difficult to ascertain the true quality of the product. Taken in aggregate, the customer review data indicates that Seredyn may have an anxiolytic benefit.

Where to Purchase

Seredyn may be purchased on Amazon:

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