Overview
What Are “Cat’s Claw” Tablets?
What cat’s claw is
Cat’s claw is a woody vine from the Amazon rainforest (Uncaria tomentosa, and a close relative, Uncaria guianensis), named for the hooked thorns along its stems. Its inner bark has a long history in South American folk medicine, and in the U.S. it is sold as an herbal supplement promoted for arthritis, viral infections, and cancer, with no definitive scientific evidence behind those uses.
The herb itself is not known to act like an opioid. The Washington Poison Center says authentic cat’s claw is not psychoactive and does not cause opioid overdose or withdrawal. Its main alkaloid, mitraphylline, works on inflammation and the immune system, according to the University of Virginia’s Blue Ridge Poison Center.
What showed up after July 1
Before the ban
Kratom and concentrated 7-OH tablets, shots, and powders sold openly at Tennessee gas stations, vape shops, and smoke shops.
After July 1, 2026
Within weeks, flavored chewable tablets labeled “Cat’s Claw Extract” appeared in the same spots, under brand names such as Buzzers and KLAZ.
Utah officials and UVA’s poison center describe labels that call the product legal and kratom-free while warning that it is for adults 21 and over, or that it contains potentially addictive substances.
What testing has found
Lab tests of some of these tablets have found opioids made from kratom that were not listed as ingredients.
Chewable tablets
Cat’s Claw Extract
Uncaria tomentosa
- “Legal”
- “Adults only” · “21+”
- “May contain addictive substances”
- Claims to be free of kratom
What labs found
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Tennessee Bureau of Investigation Sept 2026
MGM-15
As the TBI told WSMV. It also told NewsChannel 9 that 18 kratom-laced tablet packs labeled cat’s claw have been submitted to its crime lab since July, some with no kratom on the label.
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Utah Department of Agriculture and Food Oct 2026
Mitragynine pseudoindoxyl · MGM-15
In Buzzers tablets labeled cat’s claw (Utah Poison Control Center)
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Poison centers in several states Sept 2026
Mitragynine · 7-OH · mitragynine pseudoindoxyl · MGM-15
None of them on the label, per UVA’s Blue Ridge Poison Center
-
Virginia Department of Health Sept 2026
Kratom alkaloids, including 7-OH
Unlabeled, in products sold as “cat’s claw”
In October 2026, Utah health officials reported four deaths linked to illegal cat’s claw and kratom products. Not every cat’s claw product contains these compounds. A test of one batch does not tell you what is in another, so without testing the pack you have, there is no way to know what is in it or how much.
Is it legal?
Latest status: 7-OH ban tracker · Tennessee ban law tracker · Georgia kratom laws
The herb itself is legal in Tennessee, a TBI agent told NewsChannel 9. The TBI also told WSMV that products sold as cat’s claw have contained MGM-15, a compound made from kratom, and that kratom is illegal in Tennessee.
Tennessee’s Matthew Davenport’s Law (HB1649) took effect July 1, 2026 and bans the manufacture, delivery, sale, and knowing possession of kratom and 7-OH products. Its definition of kratom covers mitragynine and 7-hydroxymitragynine and their derivatives. Federally, a DEA temporary order placed mitragynine pseudoindoxyl, MGM-15, and MGM-16 in Schedule I effective August 26, 2026 (91 FR 54948), so those compounds are illegal nationwide, including in Tennessee. 7-OH itself is not federally scheduled yet: the DEA’s October 14, 2026 notice of intent (91 FR 65370) says an order will not be issued before November 13, 2026.
Georgia regulates kratom for adults 21 and older instead of banning it, but the federal Schedule I listing for MGM-15 and mitragynine pseudoindoxyl applies there too.
None of these laws limits treatment. We prescribe buprenorphine and see patients as usual.
If you’ve been taking them
The compounds found in these tablets work on the same opioid receptors as oxycodone and heroin. Taken every day, they build tolerance, and stopping can bring opioid-type withdrawal: anxiety, sweating, muscle aches, stomach upset, trouble sleeping, and strong cravings. The Virginia Department of Health and the Washington Poison Center both warn about dependence and withdrawal with regular use. There are no studies of these tablets specifically, so we will not put a day-by-day timeline on it.
Routine urine drug screens will not pick these compounds up, according to the Washington Poison Center, so tell your provider exactly what you have been taking, including the brand. If someone is hard to wake or is not breathing normally after taking them, call 911 and give naloxone if you have it.
Taking them every day?
Please do not stop on your own. Stopping suddenly after daily use can bring opioid withdrawal, and quitting that way is prone to relapse. Talk to us before you change anything. Switching to buprenorphine under a doctor’s care is the medically safer option, and we provide it whatever the label on the pack said.

