Comparison guides: which form should you take?

Fish oil, krill, cod liver, algae or flaxseed?

Whey, casein, soy, pea, rice, hemp or egg white?

Psyllium, glucomannan, inulin, oat beta-glucan or acacia?

Glycinate, citrate, malate, threonate, oxide and more

Monohydrate, HCl, Kre-Alkalyn or ethyl ester?

Ascorbic acid, liposomal, Ester-C, buffered or whole-food?

Is the reduced form worth twice the price?

Sulfate, bisglycinate or liposomal?

Carbonate, citrate, coral or algae?

Bovine, marine, multi-type, UC-II or vegan builders?

Cyanocobalamin, methylcobalamin, adenosylcobalamin or hydroxocobalamin?

D3, D2, vegan D3, calcifediol, D3+K2 or infant drops?

Zinc, picolinate, gluconate, monomethionine, acetate lozenges or sulfate?

L-carnitine, acetyl-L-carnitine, L-carnitine L-tartrate or propionyl-L-carnitine?

Folic acid, L-methylfolate or folinic acid?

Fish oil, rTG concentrate, cod liver, krill, algae, salmon, calamari, DPA, gummies, kids' or prenatal?

Is the metabolite worth choosing over enhanced curcumin?

Which oral glutathione, if any, is worth taking?

Is the R isomer worth the higher price?

Concentrate, isolate, hydrolysate, grass-fed or goat whey?

Vitamin K1, K2 as MK-7, or K2 as MK-4?

Alpha-tocopherol, mixed tocopherols or tocotrienols?

Pyridoxine, P5P or pyridoxamine?

Thiamine, benfotiamine, TTFD or sulbutiamine?

Is the active form of vitamin B2 worth paying more for?

Niacin, niacinamide or inositol hexanicotinate?

Nicotinamide riboside, NMN, NADH or oral NAD+?

Plain vitamin B5, or the form with cholesterol data?

Preformed vitamin A or its provitamin?

Choline, bitartrate, alpha-GPC, citicoline or lecithin?

Standard iodine, potassium iodide, kelp or Lugol's?

Does the form matter for such a small dose?

Plain boron, boron glycinate or calcium fructoborate?

General potassium pills or the citrate salt?

Does the niacin-bound form beat the basic salts?

Myo-inositol, D-chiro-inositol or D-pinitol?

Plain, extended-release or gummies?

Plain caffeine, caffeine gum or caffeine + L-theanine?

Standard, men's, women's, senior, children's, prenatal or postnatal?

Basic, methylated or 'stress' B-complex?

Is the better-absorbed form worth it?

Does the acetylated form do anything for joints?

Does the type of cinnamon matter?

Green tea extract, matcha, white, oolong, pu-erh or black tea theaflavins?

Panax ginseng root, American ginseng or ginseng berry extract?

Evening primrose, borage or blackcurrant seed oil?

Choline-stabilized orthosilicic acid (ch-OSA) or bamboo silica?

Ground flaxseed, flaxseed oil or flax lignans?

Are either worth taking on a normal diet?

Plain MCT oil or pure C8?

L-arginine, arginine silicate or AAKG?

Plain L-ornithine or ornithine alpha-ketoglutarate?

Pure citrulline or the malate blend in most pre-workouts?

Is the 'better-absorbed' acetylated form actually better?

N-acetylcysteine or plain L-cysteine?

Plain L-phenylalanine or the DL mix sold for pain?

The dietary amino acid or the step-closer precursor?

Trimethylglycine for homocysteine, or betaine HCl for stomach acid?

Oral L-carnosine or N-acetylcarnosine eye drops?

Plain rutin or the semi-synthetic hydroxyethylrutoside?

The red wine molecule or its better-absorbed methylated cousin?

Lutein and zeaxanthin, lutein esters, or added meso-zeaxanthin?

Whole spirulina powder or its isolated blue pigment?

The adrenal prohormone or the metabolite sold for fat loss?

Deglycyrrhizinated licorice (DGL) or whole licorice root?

Aged garlic extract, stabilised allicin or black garlic?

Nettle root extract or stinging nettle leaf products?

Partially hydrolysed guar gum or plain guar gum?

Yohimbine hydrochloride, whole yohimbe bark or rauwolscine?

Ashwagandha, rhodiola or L-theanine?

Melatonin, magnesium glycinate, glycine, valerian or L-theanine?

Glucosamine, chondroitin, MSM, UC-II collagen, hyaluronic acid or boswellia?

Creatine, beta-alanine or HMB?

BCAAs, EAAs or L-glutamine for muscle?

Curcumin, omega-3 or boswellia?

A generic probiotic, LGG or S. boulardii?

Zinc acetate lozenges, vitamin C or elderberry?

Ginkgo, bacopa, lion's mane or huperzine A?

Saw palmetto or beta-sitosterol for BPH symptoms?

Biotin or collagen peptides for hair?

Berberine, chromium or apple cider vinegar?

Electrolyte powder or coconut water powder for rehydration?