Frequently Asked Questions

Most B12 supplements are oral pills with only 1–2% absorption. If you take Metformin, acid reducers (PPIs), or you're over 50, your stomach struggles to absorb B12 from pills — you lose a protein called Intrinsic Factor. Sublingual delivery bypasses your stomach entirely. Nutrients absorb under your tongue, into the bloodstream, in 60 seconds.

Blood tests only measure B12 in your bloodstream — not whether it’s reaching your nerve cells. You can have “normal” blood levels but still experience symptoms because your stomach can’t absorb oral B12 effectively, or the B12 isn’t crossing into nerve tissue.

Yes. Sublingual delivery bypasses your digestive system completely. You don’t need strong stomach acid to absorb it.

Drugstore formulas typically use synthetic forms your body has to convert first. Nervance uses active, methylated forms your body can use immediately.

The serving size is 1½ droppers (1.5 mL). Hold it under your tongue for around 30 seconds before swallowing, once daily. See the full supplement facts on the product page.

Active B1, B3, B6, B9 (methylfolate) and B12 (methylcobalamin), in purified water, organic vegetable glycerin, monk fruit extract and natural citric acid. It contains no artificial flavour or sweetener, no preservatives, and no wheat, gluten, dairy, corn, soy, eggs or parabens. Non-GMO.

Yes — we ship worldwide. We also offer hassle-free returns from anywhere in the world within 90 days. Our goal is to make sure you’re completely happy with your purchase.

Orders are typically processed within 1–3 business days. Once shipped, delivery time depends on your location. Shipping times may run slightly longer during holidays, promotions or periods of high demand. Full details are in our Shipping Policy.

You’ll receive a confirmation email with tracking information once your order is sent out. You can also look up a parcel any time on our Track Your Order page, or by signing in to your account.

There is a 90-day money-back guarantee. If you don’t notice an improvement within 90 days, email us for a full refund. See the Return & Refund Policy for how returns are processed.

One-time purchases are charged once, with no further obligation. If you choose the automatic refill option, your payment method is charged the discounted price shown at checkout every 30 days until you cancel. There is no minimum commitment and no cancellation fee — cancel any time from your account or by emailing us. Full terms are in the Purchase Options Cancellation Policy.

Use the form on our Contact page and we’ll get back to you. Please include your order number if your question is about an existing order.