AGZ vs Thirdzy

For serious athletes, sleep is not downtime — it’s your body’s most productive recovery window. Both AGZ and Thirdzy are melatonin-free recovery supplements designed to improve sleep quality, but their goals are very different.

AGZ focuses on mental calm and cognitive restoration, using ingredients like magnesium L-threonate, ashwagandha, saffron, valerian root, and L-theanine to support brain health and stress reduction. It’s just meant to help you sleep; that’s it. 

Thirdzy, on the other hand, was built for recovery-grade sleep. It repairs muscle, joints, and nervous system function overnight. Its formula combines magnesium bisglycinate, 300 mg of GABA, L-theanine, and 10 g of hydrolyzed collagen to support both neurological calm and physical rebuilding. 

Both products avoid melatonin and work with natural sleep rhythms, but athletes report a key difference: Thirdzy delivers deeper restoration, faster recovery, and better readiness for training the next day.

• Winner: Thirdzy, best for active users and athletes focused on recovery.

• AGZ: Magnesium L-threonate, ashwagandha, saffron; endorsed by neuroscientist Andrew Huberman.

• Thirdzy: Collagen, GABA, magnesium bisglycinate, and Informed Sport certified.

• Performance: Both are melatonin-free, but only Thirdzy supports overnight tissue repair.

• Audience: AGZ suits cognitive support and stress relief; Thirdzy fits training recovery needs.

AGZ positions itself as a high-end, brain-focused sleep aid. It includes magnesium L-threonate (250 mg), which crosses the blood-brain barrier, plus 300 mg ashwagandha and 28 mg saffron for stress management and antioxidant support. Users mix one packet with a small amount of liquid (about 4 ounces) making it easy to use before bed.

Celebrity endorsement from Andrew Huberman, a neuroscientist, draws attention to AGZ’s research-based design. His backing appeals to users looking for trusted, science-led guidance.

Thirdzy, built by and for athletes, focuses on recovery-grade sleep rather than relaxation alone. Each serving provides 250 mg of magnesium bisglycinate, 300 mg of GABA, 200 mg of L-theanine, and 10 g of hydrolyzed collagen. These 4 ingredients are a complete blend for overnight muscle repair, joint support, and nervous system recovery.

Elite athletes from CrossFit, HYROX, and endurance disciplines report faster recovery, reduced soreness, and better next-day readiness. Every batch of Thirdzy is Informed Sport certified, tested against 285 banned substances for safe use in competition.

Bottom line: AGZ is built for cognitive calm, to help you sleep. Thirdzy delivers full-body and brain recovery through Active Sleep, to help you sleep and recover.

Both AGZ and Thirdzy aim to improve sleep architecture, but their methods differ.

AGZ is designed for mental calm and stress management rather than physical recovery. Its formula focuses on three phases: evening wind-down, sleep quality, and morning alertness.

• L-theanine promotes alpha brain waves linked to calm focus.

• Ashwagandha reduces cortisol and helps the body adapt to stress.

• Saffron supports mood and prevents grogginess upon waking.

• Magnesium L-threonate targets brain magnesium levels to improve neural health and relaxation.

Users say AGZ helps them relax faster and wake up refreshed, but it’s more of a mental calm supplement than a physical recovery aid, like most common sleep aids on the market.

Thirdzy is truly meant for athletes who treat sleep as the final phase of training, calming the mind to help you truly rest and rebuild your muscles at the same time, priming you for an even stronger day tomorrow. This dual-pathway design targets recovery from every angle: body, brain, and nervous system.

• GABA (300 mg) quiets mental chatter and stabilizes neural activity, helping you transition quickly into deep sleep.

• Collagen peptides (10 g) supply glycine, proline, and hydroxyproline, amino acids that repair muscle and connective tissue while promoting deeper sleep cycles.

• Magnesium bisglycinate (250 mg) relaxes muscles, prevents cramps, and supports ATP regeneration for next-day energy.

• L-theanine (200 mg) enhances calm focus without sedation, complementing GABA’s effects on neural balance.

Athletes consistently report less soreness, improved mobility, and higher recovery scores on sleep trackers after using Thirdzy nightly. Many also experience more vivid dreams and longer REM cycles, both indicators of improved sleep architecture and nervous system restoration.

Verdict: AGZ is better for de-stressing after a long day of work. Thirdzy helps you rebuild for a better tomorrow, tonight.

AGZ’s formula is built around adaptogens and brain-targeted magnesium.

• Ashwagandha reduces cortisol and stress.

• Saffron provides antioxidants and mood support.

• Valerian root adds traditional sleep benefits.

The approach works well for people who need help relaxing but aren’t focused on muscle recovery.

Thirdzy’s blend supports both sleep and physical restoration.

• Collagen supplies amino acids for muscle and joint repair while providing glycine for deeper sleep cycles.

• Magnesium bisglycinate promotes muscle relaxation and supports energy metabolism without digestive discomfort.

• GABA and L-theanine calm neural activity and create a smooth transition into sleep without drowsiness.

For athletes and high performers, this combination provides measurable recovery benefits across sleep quality, soreness, and next-day readiness.

For athletes and high performers, this dual benefit is what sets Thirdzy apart.

Both AGZ and Thirdzy are third-party tested and safe for competitive athletes, but their certifications represent different levels of rigor.

AGZ is NSF Certified for Sport, verifying manufacturing quality and screening for more than 280 banned substances. This certification confirms ingredient integrity and product safety within general sports nutrition standards.

Thirdzy is Informed Sport certified, meaning every individual batch is tested for 285 prohibited substances under the strictest global protocol. This batch-by-batch verification gives professional and drug-tested athletes the highest level of assurance in supplement safety.

Athletes often prefer Informed Sport certification because it guarantees traceability and transparency at every production stage. It is recognized worldwide as the trusted benchmark for competitive sports supplementation.

Verdict: Both are safe, but Thirdzy’s Informed Sport label carries more weight among elite athletes.

Magnesium is one of the most important minerals for both sleep and recovery (common in most modern sleep aids), but the type you use determines what system it supports.

• Combines magnesium with glycine for superior absorption and gentle digestion.
• Promotes muscle relaxation, reduces cramps, and supports nervous system calm.
• Directly contributes to deeper, more restorative sleep that drives overnight recovery.

Both provide effective 250 mg doses, but for athletes prioritizing muscle repair, joint recovery, and next-day readiness, magnesium bisglycinate offers the most relevant performance benefits. It supports the same processes that make Active Sleep the foundation of total recovery.

Verdict: L-threonate benefits brain function (AGZ), while bisglycinate benefits physical recovery (Thirdzy).

AGZ provides solid support for relaxation and stress reduction but lacks the nutrients required for true physical recovery. Its formulation focuses on chilling out rather than rebuilding your body.

• No protein or collagen: misses the amino acids needed for tissue repair and joint maintenance.

• No GABA: does not directly calm the central nervous system or promote deeper sleep stages.

• Antioxidant focus: saffron and ashwagandha help mood and stress but do not drive muscle or neural recovery.

• Brain-targeted magnesium: supports cognition, not the muscular relaxation required after high-intensity training.

For those training hard or managing heavy physical loads, AGZ feels incomplete. It helps the mind unwind but does not supply the building blocks or neural support needed to accelerate physical restoration.

Real-world feedback reinforces the differences between AGZ and Thirdzy.

• Jason Grubb, 5x CrossFit Games Masters Champion, says Thirdzy is part of his nightly recovery routine. “I count on Thirdzy every night to fuel my sleep and recovery — so I get the most from my training.”

• Dr. Emily Marshall, chiropractor, recommends it to her patients for faster recovery. “I recommend Thirdzy in my practice. And it is a staple in my evening routine. I sleep so much deeper, feel more refreshed after sleeping, wake up with more energy, and I feel way less sore for my morning workouts.”

• Lindsay Bessegato, HYROX competitor, reports improved recovery between training sessions. “Thirdzy has been a game changer for my recovery. It helps me sleep deeper, wake up refreshed (no melatonin grogginess), and bounce back faster — even after brutal training days.”

By contrast, AGZ users may describe calmer evenings and a better mood but fewer physical changes. It’s relaxing, not rebuilding.

While both AGZ and Thirdzy promote better sleep, their strengths differ.

• AGZ is good for cognitive calm, stress management, and users wanting a warm, vegan-friendly bedtime drink.

• Thirdzy is designed for athletes and active individuals who need their muscles, joints, and nervous system overnight to recover overnight.

User feedback, athlete endorsements, and formulation design all point to the same conclusion: Thirdzy delivers the full recovery support serious athletes need.

AGZ promotes relaxation through adaptogens; Thirdzy supports recovery through magnesium, GABA, and  10g of collagen that AGZ doesn’t provide.

Yes. Both formulations support natural sleep cycles without the hormonal disruption that melatonin can cause. Users report no morning grogginess or dependency concerns with either product.

It depends on your goals. AGZ's L-threonate targets brain health, while Thirdzy's bisglycinate offers better absorption and muscle relaxation for physical recovery, according to users.

No. AGZ uses ashwagandha for stress management. Thirdzy provides 300mg GABA to directly target neurotransmitter function for nervous system calming.

Both act within 30-60 minutes according to users. Thirdzy's GABA may work slightly faster for sleep onset since AGZ's adaptogenic benefits must build up over time.

It’s not recommended. Both provide comprehensive sleep support, so combining them would duplicate ingredients unnecessarily. Choose based on your recovery needs.

Both receive professional endorsements. Dr. Andrew Huberman endorses AGZ, while Thirdzy has testimonials from Dr. Emily Marshall and Dr. Justine Luchini (co-founder) with athlete verification.

Athletes and fitness-focused adults who want to improve recovery, HRV, and next-day performance without melatonin.