Plain-language answers to the five questions we get most often — magnesium forms, creatine, vitamin D timing, ashwagandha dosing, and how to stack everything without overspending.
Magnesium glycinate is the best form for sleep and relaxation — it absorbs well and is gentle on the stomach. Magnesium citrate is a solid all-rounder with good bioavailability, ideal for general supplementation. Magnesium threonate is marketed for cognitive focus because it crosses the blood-brain barrier. Magnesium oxide is cheap and poorly absorbed, so skip it. VitalShelf's sleep and calm stack pairs glycinate with KSM-66 ashwagandha. If unsure, glycinate is the safest default for most adults.
Yes. Creatine monohydrate at 3–5 g/day has been studied in thousands of trials with no adverse effects on healthy kidneys, liver, or heart. It is the single most researched sports supplement ever. Skip the loading phase — 5 g daily saturates muscle stores in about 3 weeks. Anyone with a diagnosed kidney condition should clear it with their doctor first.
Morning with a meal containing fat is ideal because D3 is fat-soluble and absorbs 2–3x better with dietary fat. Avoid taking it at night — a small subset of users report D3 disrupts sleep when dosed late. Pair with K2 (MK-7 form) to direct calcium into bones rather than arteries. Daily 2,000–5,000 IU is the typical adult range; get blood levels tested before megadosing.
KSM-66 extract (the patented, most-studied form) at 300–600 mg daily is the evidence-backed range — split AM/PM or take once with breakfast. Effects on cortisol, stress, and sleep quality typically appear after 4–8 weeks of consistent use. Cycle off for 1–2 weeks every few months if you're on thyroid medication or have an autoimmune condition. VitalShelf carries the 600 mg Nootropics Depot KSM-66 that matches this dosing.
Start with the basics: a multivitamin, vitamin D3+K2, magnesium glycinate (at night), and omega-3. Add creatine monohydrate (5 g/day, any time) if you train. Skip proprietary blends where doses are hidden, skip fat-burners, and skip BCAA/EAA if you already eat enough protein (~0.7 g/lb bodyweight). VitalShelf's pre-curated bundles (Strength, Sleep & Calm, Recovery) handle the basic stacks so you don't have to think about it.