Yes, vitamins are taxable in California. The state treats vitamins and dietary supplements as subject to sales tax, which starts at a base rate of 7.25% and can reach as high as 10.75% once local add-ons are included. California law specifically pulls these products out of the grocery exemption that keeps most food tax-free, so a monthly supplement habit carries a real tax cost at the register.
Why Supplements Don’t Get the Grocery Exemption
Most groceries are exempt from California sales tax under Revenue and Taxation Code Section 6359. That exemption covers meat, eggs, produce, milk, juice, and the other staples you’d expect. The same statute, at Section 6359(c)(1), says the term “food products” does not include preparations in liquid, powdered, granular, tablet, capsule, lozenge, or pill form sold as dietary supplements or adjuncts.1California Legislative Information. California Revenue and Taxation Code Section 6359
CDTFA Regulation 1602 fills in the test. A product falls outside the food exemption if either of two things is true: the label describes it as a food supplement, food adjunct, dietary supplement, or dietary adjunct, or the product is designed to increase or decrease your intake of vitamins, proteins, minerals, or calories. Vitamin pills and protein supplements are the regulation’s own examples of taxable items.2California Department of Tax and Fee Administration. Regulation 1602 – Food Products
How to Tell at the Shelf
The quickest way to predict whether something will be taxed is to flip the package over. Conventional foods carry a “Nutrition Facts” panel. Dietary supplements carry a “Supplement Facts” panel, a format the FDA requires for anything regulated as a supplement. If you see “Supplement Facts,” California treats the product as a supplement, and sales tax applies.
Labeling can also flip a product the other way. Regulation 1602 notes that certain unusual whole foods like brewer’s yeast, wheat germ, and seaweed are not taxed unless their labels call them a food supplement or dietary supplement. A bag of raw wheat germ in the baking aisle is tax-free; the same wheat germ repackaged and labeled as a supplement becomes taxable. And adding vitamins or protein to something traditionally accepted as food doesn’t flip it the other way. Vitamin-enriched milk and high-protein flour stay in the food category because the base product is a grocery staple.2California Department of Tax and Fee Administration. Regulation 1602 – Food Products
When Vitamins Are Not Taxed in California
A few narrow situations pull supplements back into the exempt column.
Complete Dietary Foods
A product that would otherwise be a taxable supplement is treated as exempt food if it qualifies as a “complete dietary food.” The recommended daily dosage has to deliver at least 70 grams of high-quality protein, at least 900 calories, and the FDA’s minimum daily requirements for vitamins A, B1, C, and D, riboflavin, niacin, and the minerals calcium, phosphorus, iron, and iodine. A meal-replacement shake that meets every one of those thresholds is tax-free. A product that falls short on even one of them stays taxable.2California Department of Tax and Fee Administration. Regulation 1602 – Food Products
Prescribed Supplements
When a supplement is prescribed by a licensed physician, dentist, or podiatrist and dispensed by a pharmacist, it can qualify as a “medicine” under Revenue and Taxation Code Section 6369. That statute exempts medicines prescribed for the treatment of a human being and dispensed on prescription, and also medicines furnished directly by a physician to a patient for treatment.3California Legislative Information. California Revenue and Taxation Code RTC 6369 A vitamin D supplement off the drugstore shelf is taxed. The same product prescribed by your doctor for a diagnosed deficiency and filled at the pharmacy counter can be exempt.
Physician-Supervised Weight Loss
Regulation 1591 creates a specific carve-out for supplements used in physician-supervised weight loss treatment for obesity. When a doctor furnishes dietary supplements to a patient as part of that kind of program, the supplements are reclassified as medicine and become exempt. The program has to be medically supervised, the treatment has to target obesity, and the physician has to furnish the products directly to the patient.4California Department of Tax and Fee Administration. Regulation 1591
Buying Supplements Online
Ordering online doesn’t skip the tax. California imposes a use tax at the same rate as sales tax on items purchased from out-of-state retailers and used in California. Most large online retailers already collect California tax at checkout because they have a physical or economic presence in the state. If a smaller retailer doesn’t collect it, you’re technically required to report and pay the use tax yourself on your California income tax return, at the same rate you’d pay at a local store.
Using HSA or FSA Money for Supplements
A health savings account or flexible spending account can reduce what supplements effectively cost you, though it doesn’t erase the sales tax at the register. The IRS does not treat vitamins, nutritional supplements, or herbal supplements as deductible medical expenses unless a medical practitioner recommends them as treatment for a specific diagnosed condition.5Internal Revenue Service. Publication 502 – Medical and Dental Expenses Supplements taken for general health and wellness don’t qualify.
To use HSA or FSA funds, you’ll need a letter of medical necessity from your doctor. The letter should include your name and diagnosis, the specific supplement recommended, a statement of why it’s medically necessary, and the provider’s name, credentials, and signature. Most plans require the letter to be renewed each year. Even with a valid letter, check with your plan administrator before buying, because individual plan rules vary and weight-loss supplements are often excluded regardless of the letter.
Routing medically necessary supplement purchases through one of these accounts saves you the income tax on the money you spend, which can meaningfully reduce the total cost even though California sales tax still applies.