Most men over 40 are running on broken sleep. Cortisol stays elevated, testosterone restoration is incomplete, and muscles never fully repair. The result is a slow, steady decline that feels inevitable but is not.
Kill Switch shuts down the stress response, promotes deep restorative sleep, and creates the hormonal environment for overnight testosterone restoration. This is where stamina is built.
PM Recovery
What Kill Switch Does
Magnesium Glycinate and L-Theanine calm the nervous system and promote restorative slow-wave sleep.
Zinc and Ashwagandha work overnight to restore testosterone levels depleted during the day.
Magnesium and adaptogenic compounds accelerate muscle repair and reduce post-exercise inflammation.
Phosphatidylserine and Ashwagandha lower nighttime cortisol, preventing the hormonal damage of chronic stress.
Magnesium supports heart rhythm regulation and vascular relaxation during overnight recovery.
Zinc and Vitamin D3 support immune system restoration and cellular repair during deep sleep.
The Formula
Click any ingredient to see the science behind it.
Magnesium Glycinate is the most bioavailable and gentle form of magnesium. It crosses the blood-brain barrier to activate GABA receptors, reducing neural excitability and promoting deep, restorative sleep. At 400mg, it also supports muscle relaxation, reduces nighttime leg cramps, and accelerates post-exercise recovery. Over 60% of Americans are magnesium deficient.
The PM dose of KSM-66 Ashwagandha works synergistically with the AM dose in Full Throttle. Taken at night, it reduces cortisol during the critical overnight recovery window and supports the natural testosterone surge that occurs during deep sleep. Clinical studies show KSM-66 improves sleep quality scores by 72%.
L-Theanine is an amino acid found in green tea that promotes alpha brain wave activity, the mental state associated with calm, focused relaxation. At 200mg, it reduces anxiety and mental chatter without causing drowsiness, making it ideal for men who struggle to quiet their minds at night. Works synergistically with Magnesium Glycinate.
The majority of daily testosterone production occurs during deep sleep. Zinc is the essential cofactor for this process. The PM dose in Kill Switch ensures zinc availability during the overnight testosterone synthesis window, complementing the AM dose in Full Throttle for 24-hour hormonal support.
Phosphatidylserine is a phospholipid that forms a critical component of cell membranes in the brain. At 100mg, it reduces cortisol levels by up to 30% and improves cognitive recovery from stress. Particularly effective when taken at night, it blunts the cortisol spike that can disrupt sleep architecture and testosterone production.
Kill Switch uses a low, physiological dose of melatonin (0.5mg) rather than the excessive doses found in most sleep supplements. Research shows that 0.5mg is as effective as 5mg for improving sleep onset, without the next-day grogginess or suppression of natural melatonin production. This dose signals the brain to prepare for sleep without overriding natural rhythms.
What To Expect
68% of men reported
79% of men reported
85% of men reported
The Science Behind Kill Switch
The majority of testosterone production occurs during deep sleep — specifically during slow-wave sleep stages 3 and 4. When sleep quality is poor, the pituitary gland reduces LH secretion, testosterone synthesis drops, and cortisol rises. One bad night costs you measurable hormonal output. Chronic poor sleep accelerates the decline that most men blame on age.
Kill Switch activates deep sleep through Magnesium Glycinate and L-Theanine, then uses that sleep window to restore testosterone with Zinc and Ashwagandha. It is not a sedative. It is a hormonal recovery protocol that works while you sleep.
70%
of daily testosterone is produced during deep sleep
Zinc + KSM-66
clinically validated testosterone restoration stack
Stage 3-4
slow-wave sleep is where hormonal repair happens
8 hrs
optimal recovery window Kill Switch is designed for
Complete The System
Full Throttle builds the hormonal foundation every morning. Drive activates performance when you need it. Kill Switch ensures you recover and rebuild overnight. Three formulas. One complete system.
Performance Activator
Daily Foundation
PM Recovery
Got Questions
Take 2 capsules 30-60 minutes before bed. Kill Switch is your PM recovery formula, designed to be taken every night as part of your complete hormonal optimization system. Consistency is key for maximum benefit.
No. Kill Switch uses a low, physiological dose of melatonin (0.5mg) that works with your natural sleep rhythms rather than overriding them. The formula is designed to promote deep, restorative sleep without next-day sedation.
Yes. Kill Switch is the PM component of The Bull Stack. Full Throttle is your AM foundation, Drive is your performance activator, and Kill Switch handles overnight recovery. Together they form a complete 24-hour system.
No. Kill Switch contains no habit-forming compounds. The low-dose melatonin (0.5mg) does not suppress your natural melatonin production, and all other ingredients are natural compounds that support your body's own recovery processes.
Kill Switch is backed by a 90-day money-back guarantee. If you are not completely satisfied with your results, contact us within 90 days of purchase for a full refund, no questions asked.
Amplify Your Recovery
Nova delivers 5,000 IU of Vitamin D3 with K1 and K2. Vitamin D3 is critical for overnight testosterone restoration, making Nova the perfect complement to Kill Switch's recovery protocol.
