We've put together a real ranking based on data about what our service's users buy on iHerb. These are the vitamins and supplements that customers add to their cart again and again and ship home — to Russia, Belarus, Kazakhstan — at special low shipping rates from iHerb.
Liposomal inositol powder with mixed berry flavor — a product for female reproductive health. Inositol is used for polycystic ovary syndrome and pregnancy preparation. The liposomal form is a technology where the active ingredient is packaged in phospholipid vesicles and is absorbed better than regular powder. The product is in steady demand among women with PCOS and those preparing for IVF — combined formulas of this level are practically unavailable in Russian pharmacies.
Zinc in the picolinate form is one of the best-absorbed forms. Picolinate binds zinc to picolinic acid, providing higher absorption than oxide or sulfate. Zinc is important for the immune system, wound healing, skin condition, and male reproductive function. Thorne is a US brand with strict manufacturing standards and formula purity; its products are used by professional sports teams and integrative medicine doctors.
NAC, or N-acetylcysteine, is a precursor to glutathione, the body's main antioxidant. Glutathione neutralizes toxins in the liver, protects cells from oxidative stress, and supports the immune system. Glutathione levels decline with age and under the influence of alcohol, medications, and pollution; acetylcysteine helps restore them. In this formula, Doctor's Best combines NAC with other nutrients to enhance antioxidant action. NAC is used for liver detoxification, bronchopulmonary issues, and general antioxidant support. Buying pure NAC without additives or fillers in Russian pharmacies is difficult, so the supplement is ordered from iHerb.
L-methylfolate is the biologically active form of folic acid. For a significant portion of the population, regular folic acid converts poorly into active methylfolate, so standard folic acid vitamins have weak effects. Jarrow Formulas Methyl Folate is absorbed directly and is especially important when planning pregnancy and in the first trimester, for cardiovascular diseases, depression, and anxiety. Vegan formula without dairy ingredients or gluten.
Liquid liposomal Vitamin C — a formula in which the vitamin is packaged in phospholipid vesicles and absorbed better than regular tablets. Citrus-vanilla flavor, sugar-free. Buying liposomal Vitamin C in Russian retail is practically impossible, so the liposomal supplements category is ordered from iHerb steadily. A premium segment for those who need maximum bioavailability.
Large pack of magnesium from Doctor's Best — a backup format for those who take magnesium on a regular basis. Chelated form (glycinate-lysinate from Albion Minerals) is a patented binding with confirmed high bioavailability; it does not cause a laxative effect and does not irritate the stomach. Magnesium in this form is suitable for cramps, sleep disorders, muscle tension, helps cope with stress, and supports the nervous system.
Liquid D3 for infants and young children based on medium-chain triglyceride (MCT) oil. Pediatricians almost universally recommend Vitamin D3 for children in the first year of life: breast milk contains insufficient D3, and skin synthesis in infants is low. The composition is clean — no preservatives, artificial colors, flavorings, or allergens. One of the most common orders in the children's products category from iHerb.
Concentrated omega-3 in Triple Strength format. Raw material is wild Alaskan pollock with MSC sustainable catch certification. Molecular distillation removes mercury and heavy metals. Sports Research is a US brand from Los Angeles focused on sports nutraceuticals and quality raw materials. Omega-3 is used to support the cardiovascular system, joints, dry eyes, and to reduce systemic inflammation.
Magnesium taurate is a mineral bound to the amino acid taurine. Magnesium taurate supports heart and vascular function and helps with anxiety and sleep disorders. The formula also includes vitamin B6, and the entire complex is packaged in liposomes for increased bioavailability. A premium product for people with hypertension, arrhythmia, anxiety, and insomnia. Magnesium taurate is hard to find in regular retail, so ordering from iHerb becomes the only reasonable option.
One of the best multivitamin complexes on iHerb by quality-to-price ratio. The formula contains active forms of vitamins and minerals: methylfolate instead of regular folic acid, methylcobalamin instead of B12, P-5-P instead of B6, zinc, selenium, and chromium in chelated forms. Suitable as a basic complex for active adults, under increased loads, and for vegan and vegetarian diets.
Concentrated omega-3 from NOW Foods — one of the most in-demand products in the NOW vitamins line on iHerb. Raw material from deep-sea fish, molecular distillation to remove mercury and heavy metals. NOW Foods Omega-3 offers the optimal balance between concentration and price. Buying NOW vitamins with this concentration in Russian retail is difficult — pharmacies usually stock basic fish oils with EPA and DHA 2-3 times lower, so those who care about high quality prefer to order from iHerb.
Slow-release iron — a technology where iron is released gradually over several hours. This allows taking a high dose without the side effects typical of regular iron sulfate: nausea, stomach heaviness, constipation. The formula also includes B vitamins, folic acid, and vitamin C for iron absorption. Suitable for iron-deficiency anemia, pronounced ferritin deficiency, heavy menstruation, and postpartum recovery.
Basic magnesium from Doctor's Best in chelated form — a patented glycinate-lysinate binding from Albion Minerals with confirmed high bioavailability. Absorbed better than oxide and carbonate, does not cause a laxative effect, and does not irritate the stomach. The most budget-friendly working magnesium supplement on iHerb — an option for those who simply need to cover basic magnesium needs without overpaying for premium formulas. Suitable for cramps, sleep disorders, and muscle tension.
Vitamin D3 in 2000 IU dosage — the optimal option for daily intake. D3 is needed for immune system function, bone density, muscle strength, testosterone synthesis, and affects mood and sleep quality. NOW Foods produces D3 as cholecalciferol in olive oil — this form is absorbed better than D3 in tablets or powder. NOW vitamins have led this category on iHerb for many years, partly due to price — one capsule costs 3-4 times less than Russian pharmacy analogs with the same dosage.
High-dosage NOW Vitamin D 5000 in a compact pack — one of the most popular formats in the category. The price on iHerb is excellent: $4.71 per pack, which works out to less than 4 rubles per capsule. The 5000 IU dosage is effective for correcting pronounced vitamin D deficiency. Buying NOW vitamins in this dosage is convenient for the whole family. The capsules are small, easy to swallow, with no taste or smell.
The same product as in position 6, but in a large pack — 240 capsules instead of 120. At $8.91 the per-capsule price is even lower. One of the most cost-effective ways to cover a year's worth of vitamin D3 needs for the whole family. People choose NOW Foods vitamin D3 specifically for its honest formula at an honest price — cholecalciferol in oil capsules, with nothing extra, in a dosage that works.
One of the most popular collagen powders on iHerb — and California Gold Nutrition consistently ranks among the site's top-selling brands. Hydrolyzed marine collagen types I and III. The formula includes hyaluronic acid and vitamin C, without which the body's own collagen synthesis is impossible. Tasteless and odorless, dissolves in any liquid. A 2-3 month course provides visible effects for skin, hair, and nails.
Patented zinc and L-carnosine complex (PepZin GI) from Doctor's Best, developed in Japan to protect the stomach lining. In this binding, zinc L-carnosine works not as a regular mineral but as a local protective agent: it stays in the stomach longer, adheres to the walls, and supports mucosal integrity. Clinical studies show zinc carnosine is used for gastritis, reflux, peptic ulcers, and recovery after long-term NSAID use (ibuprofen, aspirin). The product is in steady demand in Russia — analogs with PepZin GI are practically unavailable in pharmacies; gastroenterologists recommend this supplement for those wanting to add mucosal protection to primary therapy. Gastro L-carnosine shows noticeable improvements after 4-6 weeks of use.
One of the best B-complexes on iHerb by quality-to-price ratio. All B vitamins are presented in active methylated forms: folic acid as L-methylfolate, B12 as methylcobalamin. This is especially important for those whose regular inactive B-vitamin forms convert poorly into active forms due to metabolic factors. Supports energy metabolism, the nervous system, brain function, and skin condition. Suitable for chronic fatigue, anxiety, postpartum recovery, and vegan diets, during periods of increased load.
The undisputed leader of the list — a complex of six magnesium forms in one tablet (malate, succinate, citrate, fumarate, taurate, aspartate). Each form has its own action: malate raises energy levels and helps with chronic fatigue, citrate relieves muscle spasms and cramps, taurate supports heart and vascular function, fumarate and succinate participate in cellular energy production, and aspartate affects the nervous system. The formula includes vitamin B6 for better magnesium absorption. Source Naturals is one of the oldest US manufacturers of premium supplements. On iHerb this product has been a sales leader among magnesium supplements for years.
