★★★★★
"Three weeks in and I'm waking up before my alarm. That hasn't happened in years. It doesn't feel sedating — I just actually slept."
ARC NeuroSynergy Complex
60 capsules · 30-day supply · Take 2 capsules 30 minutes before sleep. Nothing to hide.
Formulated to work
while you sleep.
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€31.49 / mo
€27.99
/ mo
Save €3.50 per month. Billed as 3 pouches every 3 months
30-day money-back guarantee. If you don't notice a difference, we'll refund in full -- no questions asked.
Food supplements should not be used as a substitute for a varied and balanced diet and healthy lifestyle. Keep out of reach of children. If you are pregnant, breastfeeding, or taking medication, consult your GP or pharmacist before use.
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Formulated to work while you sleep.
ARC uses a time-aware formula. Five bioavailable ingredients working together to support deep sleep, lower cortisol, and help your body actually recover overnight. Every ingredient listed. Every dose disclosed.
Ashwagandha (7% withanolides)
300mgA highly standardised ashwagandha extract — in a 60-day randomised controlled trial, associated with a 23% reduction in morning cortisol vs placebo.1
Magnesium Bisglycinate
750mgMagnesium bisglycinate — chosen for its superior absorption — contributes to the reduction of tiredness and fatigue, and to normal psychological function.2
L-Theanine
500mgAn amino acid studied for its role in promoting alpha-wave brain activity — relaxed alertness without drowsiness.
Apigenin
50mgA flavonoid from chamomile, studied for its interaction with GABAergic pathways and positively associated with sleep quality in population research.
P5P (Vitamin B6)
2.5mgThe active, immediately bioavailable form of B6 — a required cofactor in serotonin synthesis. Contributes to normal psychological function and the reduction of tiredness and fatigue.3
References
- Lopresti AL et al. (2019). Medicine (Baltimore), 98(37), e17186. PMID: 31517876. View source
- Approved GB/EU health claim: magnesium contributes to the reduction of tiredness and fatigue, and to normal psychological function.
- Approved GB/EU health claim: vitamin B6 contributes to normal psychological function and the reduction of tiredness and fatigue.
What ARC does for you
Three things.
Every night.
01
Sleep quality
Magnesium bisglycinate and apigenin are associated with improved sleep quality and onset in published research. Magnesium contributes to the reduction of tiredness and fatigue.*
02
Stress & resilience
Ashwagandha is associated with cortisol regulation in published human trials. Magnesium and vitamin B6 contribute to normal psychological function.*
03
Morning readiness
Vitamin B6 contributes to the reduction of tiredness and fatigue, and to normal psychological function.* P5P is the active, immediately bioavailable form — chosen for its direct role in neurotransmitter synthesis.
*Approved GB/EU health claim
Customer reviews
4.8 stars across 214 reviews.
★★★★★
"I'd tried magnesium and ashwagandha separately. Nothing. Something about ARC is different — my stress response feels more measured after about three weeks."
★★★★★
"Took about 10 days before I noticed anything. But mornings are different now — clearer. I've stopped reaching for a second coffee before 9am."
Common questions
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How long before I notice a difference?
It depends on the ingredient. Apigenin and L-theanine work quickly — most people notice something in the first week. Magnesium builds over 1–2 weeks. Ashwagandha takes 3–4 weeks to establish. Give ARC one full 30-day cycle.
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Why no melatonin?
Melatonin tells your body what time it is — it doesn't improve how you sleep. Nightly supplementation can dampen your own production over time. ARC works differently.
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Can I take ARC if I'm already on medication?
Always speak to your doctor or pharmacist before taking ARC alongside prescription medication — particularly thyroid medications, immunosuppressants, or sedatives.
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Can I take ARC during pregnancy or breastfeeding?
We don't recommend ARC during pregnancy or breastfeeding. Ashwagandha has limited safety data in pregnancy. Speak to your doctor.
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Are the capsules suitable for vegans?
Yes. Our formulation is vegan-friendly from capsule to contents.