Vitamin D: Der komplette Leitfaden

AM/PM order, what to combine vs separate, and why sunscreen always comes first.

The honest tier list — proven staples vs situational vs mostly marketing. The hub the other guides feed into.

The most evidence-backed supplement there is — dose, forms, the beyond-muscle case, and the myths.

On Ozempic/Wegovy/Mounjaro? What actually helps — muscle preservation, GI relief, nutrient gaps (no upsell).

Tired? Why most "energy" pills only work if they fix a deficit — and how to find yours first.

Which supplements clash with blood thinners, thyroid meds, antibiotics & more — and what to do.

Caffeine+L-theanine works; bacopa needs weeks; most "brain pills" are hype. The honest tier list.

What genuinely lowers LDL/triglycerides — and why "red yeast rice" is a statin in disguise.

Berberine, inositol, magnesium vs the cinnamon/chromium hype — and the med-interaction warning.

Magnesium, riboflavin, CoQ10 — the supplements with real migraine-prevention evidence (and doses).

AREDS2 works for diagnosed AMD; lutein/screen-strain claims are weaker. Who actually benefits.

The popular one (saw palmetto) mostly fails in rigorous trials; beta-sitosterol is the better bet.

Selenium helps; iodine can WORSEN Hashimoto’s. The honest take on "thyroid support".

Weight loss is the real treatment; vitamin E/omega-3 have some evidence, milk thistle modest, TUDCA thin.

CoQ10, zinc, selenium, carnitine modestly help sperm parameters — but live-birth evidence is weak.

Folate is essential; inositol + CoQ10 are the best bets — but conception evidence is limited.

Saffron, EPA omega-3, SAMe have real adjunct evidence — but these aren’t a substitute for care, and some interact dangerously.

Caffeine, citrulline, beta-alanine, creatine — the ingredients that work, at clinical doses (vs fairy dusting).

Probiotics vs prebiotics vs synbiotics, the CFU myth, and what actually helps bloating.

Ashwagandha, L-theanine, magnesium, saffron — what actually helps stress, and the safety caveats.

Curcumin, omega-3, UC-II collagen, Boswellia vs the old glucosamine default — and OA vs RA.

Zinc timing, vitamin D, the real vitamin C effect — and the elderberry caution.

Hot flashes, bone, sleep, muscle — the basics that hold up vs the phytoestrogen hype.

The transition years (40s): cycle changes, mood, sleep, brain fog — foundations, vitex, and starting muscle work early.

Inositol (40:1), and the supporting cast for insulin resistance, cycles & fertility.

What’s safe while nursing, the truth about milk-supply herbs, and what to avoid (it passes into milk).

Real for blood sugar, oversold for weight loss — and nothing like a GLP-1. The honest verdict.

NAD+ boosters raise a biomarker — but the anti-aging benefits aren’t proven in humans. The honest read.

Modest-but-real for skin, growing for joints, weak for hair/nails — plus which type to buy.

Fish oil vs krill vs algae, EPA vs DHA, the right dose — and the LDL caveat.

Safe, but no benefit if you’re not filling a gap. Who actually needs one — and who doesn’t.

Who actually needs electrolytes (and who doesn’t), what matters (sodium), and LMNT vs alternatives.

Trendy, plausible mechanism, thin adult evidence — the honest hype check.

Mostly hype unless you’re deficient — what has modest evidence vs what doesn’t, and when to see a doctor.

Start with 2–3 foundations, add one at a time, build by goal — without wasting money.

When to take what, with or without food, and which supplements compete vs pair well.

The proven core (sunscreen, retinoids, vitamin C) vs the viral hype tier — honestly tiered.

The depigmenter playbook (hydroquinone, azelaic, tranexamic, vitamin C) with sunscreen as the spine.

Bakuchiol vs retinol vs adapalene vs tretinoin — pick by strength and tolerance, not hype.

The proven options (minoxidil, finasteride) vs adjuncts and weak naturals — tiered for pattern hair loss.

Benzoyl peroxide & retinoids → salicylic/azelaic/niacinamide → naturals, tiered by evidence.

Melatonin, magnesium, glycine, L-theanine — tiered by evidence, plus a wind-down timeline.

Glycinate vs citrate vs threonate vs oxide — compared by absorption, side effects, and goal.

Commonly recommended vs ask-your-clinician vs avoid — a general, safety-first overview.