This post is informational, not an endorsement. Quit Kit is a commercial product some members of this community have used. We’re explaining what it is, what’s in it, and how it compares to building a similar stack yourself for less money. Not medical advice. If you’re on a prescribed medication (Suboxone, LDN, antidepressants, etc.), check interactions for any new supplement with your pharmacist or prescriber, that’s the narrow ask they can help with. Otherwise this is community ground; #vitamins-supplements is the chat channel for what’s worked.
A note on naming: there are at least two similarly-named products in this space, Quit Kit at tryquitkit.com and QuitK at quitk.com (sold via Soul Supplements). They’re separate products with overlapping marketing. The general analysis below applies to both, though specific formulations and prices differ.
What it is
Quit Kit and QuitK are commercial supplement stacks marketed specifically for kratom, 7-OH, and opioid withdrawal. They come as morning and nighttime capsule packs, typically taken for several weeks before and during a taper. Both products are made of well-known recovery supplements bundled into convenient pre-packed doses.
Common ingredients (varies by product):
- Magnesium glycinate: anxiety, sleep, restless legs
- L-tyrosine: dopamine precursor, helps motivation and anhedonia
- L-theanine: calming without sedation
- NAC: glutamate modulator, reduces cravings
- GABA: calming neurotransmitter (oral GABA absorption is debated; effects are mostly placebo or via gut signaling)
- 5-HTP: serotonin precursor
- Ashwagandha: adaptogen, cortisol regulation
- Valerian root, passion flower: calming herbs for sleep
- Agmatine: proposed to reduce opioid tolerance
- B vitamins, vitamin D, zinc: foundational nutrients depleted during withdrawal
This is a reasonable formulation. Most of these ingredients have at least some evidence supporting their use in withdrawal contexts and overlap heavily with what’s covered in Vitamins & Supplements (the comprehensive guide to individual supplements, dosing, brands, and what to skip). Pre-packaged morning/night doses are convenient, especially when you’re in the fog of acute withdrawal.
The honest tradeoff
The case for buying it:
- Convenient, especially in the haze of acute withdrawal when assembling a stack feels overwhelming
- Pre-dosed so you don’t have to measure individual supplements
- One purchase instead of 8-12 separate bottles
- Some users report it helped them get through
The case against:
- Significantly more expensive than building it yourself (roughly 2× the cost of an equivalent DIY stack, see the cost breakdown below).
- Doses for individual ingredients aren’t always optimal, proprietary blends can hide actual amounts of each compound.
- You can’t adjust if one ingredient causes side effects (e.g., 5-HTP being problematic if you’re on antidepressants).
- The marketing leans heavily on testimonials and emotional appeals; the actual mechanism is just supplements that exist independently.
- It’s not a magic bullet. Reviews include people who say it helped and people who say it didn’t. The supplements are real; the framing as a “kit” doesn’t add pharmacological value beyond what the individual components do.
Cost: kits vs. building it yourself
A commercial kit runs roughly $50-75/month. Sourcing the equivalent ingredients individually from third-party-tested brands (NOW Foods, Nature’s Way, Pure Encapsulations, Thorne, Doctor’s Best) typically lands at $25-40/month for a comparable foundational stack, plus the ability to see exact per-ingredient doses, drop or substitute anything that doesn’t agree with you, and shop sales or Amazon Subscribe & Save.
For the full per-supplement breakdown (doses, brand recommendations, when to add what, what to skip), see Vitamins & Supplements, that page is the primary home for the DIY stack and the supplements covered here.
What we don’t recommend
A few specific concerns about both Quit Kit and QuitK:
- 5-HTP is in some of these products and can interact dangerously with antidepressants (SSRIs, SNRIs, MAOIs, tramadol), risk of serotonin syndrome. If you’re on any psychiatric medication, check the ingredient list carefully or build your own stack and skip 5-HTP.
- GABA orally is mostly marketing; it doesn’t cross the blood-brain barrier well. The calming effects come from other ingredients, not GABA itself.
- Proprietary blends that don’t disclose individual ingredient doses make it impossible to know what you’re getting.
- Marketing language (“backed by science,” “12-in-1,” etc.) is essentially supplement industry standard. The supplements work because of what they are, not because they’re packaged as a “kit.”
Bottom line
If you can afford it and convenience matters more than cost, the commercial kits are a reasonable starting point. The ingredients are evidence-supported and people in this community have used them to get through withdrawal.
If you’re cost-conscious, want full control, or have any prescription medications, building your own stack is straightforward and significantly cheaper, see Vitamins & Supplements for the full per-supplement guide.
Either way: supplements help, but they’re not the main event. Sleep, hydration, lifestyle, and (for some) medical support like Suboxone or SR-17 do the heaviest lifting. Don’t let any commercial product convince you it’s the difference between success and failure, it isn’t.