24.03.2026

Top 10 iHerb Bestsellers — Vitamins and Supplements

iHerb sells over 50,000 products, but these 10 are the most popular. We've put together a list of bestsellers with prices — order through Prostobox with delivery to Russia.

1
Doctor's Best, Magnesium Chelate, 240 tablets $20.99 (~2015 ₽)

Magnesium in chelated form — this is not just marketing. Albion TRAACS technology binds the mineral with amino acids, which significantly increases its bioavailability. The result is noticeable: muscles stop cramping at night, falling asleep becomes easier, anxiety decreases. 240 tablets — that's four months of use at the standard dosage.

2
NOW Foods, Pumpkin Seed Oil, 100 capsules $12.24 (~1175 ₽)

Pumpkin seed oil works in several directions at once. For men — prostate support and normal urination. For everyone — strengthening hair follicles and reducing hair loss. 1000 mg of active substance in each capsule, no taste or smell.

3
NOW Foods, Magnesium Glycinate, 180 tablets $19.59 (~1881 ₽)

When regular magnesium causes discomfort — it's almost always oxide or sulfate. Glycinate is structured differently: the molecule is bound to the amino acid glycine, passes through the GI tract gently and does not cause a laxative effect. The optimal choice for sensitive intestines.

4
Life Extension, BioActive B-Complex, 60 capsules $9.00 (~864 ₽)

B vitamins work in harmony — each is responsible for its own area. The active form is what matters: methylfolate and methylcobalamin are absorbed without liver conversion, which is critical for people with genetic metabolic characteristics.

5
California Gold Nutrition, CollagenUP, 206 g $17.46 (~1676 ₽)

Collagen without vitamin C — money down the drain: ascorbic acid is required for the synthesis of your own collagen. All three components are combined in one formula here. Marine peptides are absorbed faster, hyaluronic acid retains moisture in the skin. Unflavored, can be mixed into anything.

6
NOW Foods, Psyllium, 454 g $11.76 (~1129 ₽)

Psyllium swells in the intestines and works in two directions at once: normalizes stool and binds cholesterol before it is absorbed. 454 g lasts a long time; the price for this volume is one of the best on iHerb.

7
NOW Foods, D3 + K2, 120 capsules $9.17 (~880 ₽)

Without K2, vitamin D3 can deposit calcium where it shouldn't. K2 redirects calcium: from the blood — to bones and teeth, away from vessel walls. These two vitamins should be taken together — the manufacturer has already done that for you.

8
NOW Foods, D-3, 5000 IU, 120 capsules $6.81 (~654 ₽)

A dosage of 5000 IU is suitable for correcting actual deficiency, not just prevention. Soft gel capsules with an oil base ensure proper absorption. The price for 120 capsules is one of the lowest in the category.

9
California Gold Nutrition, Omega-3, 100 capsules $12.20 (~1171 ₽)

EPA reduces inflammation, DHA supports brain function and vision. Fish gelatin capsules — suitable for those avoiding beef or pork gelatin. 1100 mg per capsule.

10
California Gold Nutrition, D3 + K2 MK-7, 180 capsules $16.20 (~1555 ₽)

MK-7 remains active in the blood for up to three days — compared to several hours for MK-4. This means stable action without needing to track timing of intake. 180 vegetarian capsules — six months from one package.

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