Koi CBD Gummies, Balms, THCA Flower and YEEHAW Chocolate Review: The CBD Range Is Ordinary and Reasonable — The Chocolate Bar Contains a Herb the FDA Linked to Liver Failure

Product Overview

Koi is one of the longer-established names in hemp, with an affiliate programme running since January 2022. Its catalogue splits cleanly into two halves, and they warrant very different assessments.

The conventional half is unremarkable in the best sense. CBD balms from $19.99 to $69.99, soft chews at $29.99 in calming, hip-and-joint and omega formulations, full-spectrum CBD gummies at $39.99, a CBD vape, and dog biscuits for joint and immune support at $29.99. These are ordinary CBD products at ordinary prices, and nothing about them raises concern.

The other half is where this review spends its time. Koi sells THCA flower in three tiers from $24.99 to $169.99, kief-infused and diamond-infused THCA pre-rolls, a 5-gram disposable vape combining THCA, THCP and delta-9 THC at $69.99, extra-strength delta-8 and delta-9 gummies, a Dragon Blend gummy containing 125mg of combined delta-9 and delta-8 per piece plus THC-P, and a Dragon Balm topical with 1,865mg CBD and 135mg THC.

And it sells YEEHAW Mushroom Chocolate Bars, which are not really mushroom products in the sense the name implies. Their disclosed formulation is 'a proprietary magic blend, along with a next-gen formulation of cordyceps, kanna, kava, l-theanine, citicoline, theobromine, and more', promising 'waves of psychedelic clarity and expanded perception'. Cordyceps is a benign functional mushroom. The psychoactivity is coming from elsewhere, and one of the named ingredients carries a specific and serious safety history.

We could locate no BBB profile for Koi CBD.

Ingredients & Amounts

Koi states cannabinoid content clearly on its intoxicating products, and on the Dragon Blend gummies it goes further than most by warning outright: 'Very few can handle the potency of Dragon Blend Gummies. They are for experienced users only.' That is honest, and at 125mg of combined delta-9 and delta-8 per gummy plus THC-P — 2,500mg in a twenty-count jar — the warning is warranted. Regulated cannabis markets cap edible servings at 5 to 10mg. The exception to the good labelling is YEEHAW, where the psychoactive component is described only as a 'proprietary magic blend'. For a product marketed on producing 'psychedelic clarity', an undisclosed active is the wrong place to be vague.

What the Manufacturer Claims

The Dragon Blend warning is genuinely creditable — a company telling you its own product is too strong for most people is doing the right thing, and it is more than several competitors manage. The problem is at the other end. 'Proprietary magic blend' in a product promising 'psychedelic clarity' tells a buyer nothing about what they are taking, and the ingredients that are named include two with real interaction and toxicity profiles. Marketing an undisclosed psychoactive formulation in milk chocolate, cookies-and-cream and strawberry-milk flavours compounds the concern rather than easing it.

What the Science Actually Supports

Kava is the ingredient requiring most attention, and the evidence is well established. On 25 March 2002 the FDA issued a consumer advisory notifying the public that kava-containing dietary supplements may be associated with severe liver injury. The published record includes cases of severe hepatitis progressing to fulminant hepatic failure: eleven patients who used kava products developed liver failure and underwent liver transplantation, and deaths have been reported. Presentation is typically fatigue, nausea, raised liver enzymes and jaundice, appearing two to twenty-four weeks after starting the product. Safety concerns led to withdrawal or banning in France, Switzerland, the Czech Republic, Spain, the UK, Hungary, Portugal, Germany and Canada. It remains legal to sell in the United States as a dietary supplement.

Kanna (Sceletium tortuosum) inhibits serotonin reuptake — the same mechanism as an SSRI antidepressant. That is why combining it with an SSRI, SNRI, MAOI, tramadol or triptans carries a theoretical serotonin syndrome risk.

Cordyceps is a benign functional mushroom with traditional use and limited controlled human data. It is not psychoactive and is not what produces the advertised effects.

L-theanine, citicoline and theobromine are mild, well-tolerated compounds. Theobromine is the stimulant in chocolate; citicoline has some cognitive research behind it; l-theanine is associated with modest calming effects.

THCP — tetrahydrocannabiphorol, present in both the Dragon Blend gummies and the 5g vape — was first reported in Nature's Scientific Reports in 2019, described as having in vivo cannabimimetic activity higher than THC. Published binding data puts its CB1 affinity at roughly thirty times that of THC. Human research is minimal, with no established dosing and no safety profile.

THCA is the non-intoxicating acid form of THC that converts to delta-9 THC when heated, so smoking THCA flower delivers delta-9 THC. It is sold as hemp only because the current federal test measures delta-9 before that conversion.

The clinical harms of high-dose cannabis edibles — acute anxiety and panic, tachycardia, vomiting, and in susceptible people transient psychotic symptoms — cluster at large doses in inexperienced users, which is precisely what a 125mg-per-piece gummy delivers.

Limits of That Evidence

Directions, Warnings & Allergens

Pricing, Subscription, Refunds & Shipping

Pros & Cons

Who It May Be Best For

• •Buyers who want the ordinary CBD products — balms, soft chews, pet biscuits — which are reasonably priced and unremarkable
• •Experienced cannabis users who know their tolerance and heed Koi's own Dragon Blend warning
• •Anyone wanting a CBD topical, where the Dragon Balm's THC content is unlikely to intoxicate

Who Should Avoid It

• •You have any liver condition, drink regularly, or take acetaminophen or other liver-metabolised medication — regarding the YEEHAW bars
• •You take an SSRI, SNRI, MAOI, tramadol or triptans
• •You are new to cannabis edibles — the Dragon Blend range is not a starting point
• •You have a personal or family history of psychosis, schizophrenia or bipolar disorder
• •You are drug tested for work, sport, a licence or legal reasons
• •You are pregnant or breastfeeding
• •There are children or pets in the household and you cannot store products locked away
• •You live in a state restricting THCA, delta-8 or kava
• •You were planning to stock up before November 2026

Alternatives

Frequently Asked Questions

Our Take

Koi's ordinary CBD range is fine. Balms from $19.99, soft chews at $29.99, full-spectrum gummies at $39.99 and dog biscuits at $29.99 are standard products at standard prices from a long-established brand, and we have no criticism of them. On its intoxicating products it also labels cannabinoid content clearly and — unusually — warns outright that its Dragon Blend gummies are 'for experienced users only'. Telling customers your own product is too strong for most people is the right instinct and more than most competitors manage.

The YEEHAW Mushroom Chocolate Bars are a different matter, and they are the reason for this rating. They are marketed for 'waves of psychedelic clarity', sold in milk chocolate, cookies-and-cream and strawberry-milk flavours, and their psychoactive component is described only as a 'proprietary magic blend'. Among the ingredients that are named is kava — a herb the FDA warned about in a March 2002 consumer advisory for its association with severe liver injury, with eleven users going on to require liver transplants and regulatory withdrawal following across most of western Europe and Canada.

No amount is given. No liver warning appears. Nor is there any flag on the kanna, which inhibits serotonin reuptake and should not be combined with an antidepressant. For a product whose entire proposition is altering how you feel, the actives are the one thing not disclosed.

The Dragon Blend gummies are extreme but at least honestly labelled — 125mg of delta-9 and delta-8 per piece, 2,500mg a jar, with THC-P added. That last ingredient binds the CB1 receptor around thirty times more tightly than THC, has almost no human research behind it, and appears in the list without explanation, here and in the 5-gram vape.

And essentially the whole intoxicating catalogue — THCA flower most directly of all — faces Section 781 on 12 November 2026.

We rate Koi CBD 2.5 out of 5 — a reasonable CBD brand carrying a chocolate bar whose undisclosed formulation includes a herb with a liver-failure warning attached.

Buy the balms, the chews and the dog biscuits if you want them. Leave the YEEHAW bars alone, and absolutely so if you take an antidepressant, drink, or have any liver condition. And treat the Dragon Blend warning as Koi wrote it.