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 → bloodstream → nerves in 60 seconds.

It's not that B12 doesn't work. Pills just never reached your nerves effectively.

Most people report improvements within 2-8 weeks:

• Week 2-3: Better sleep quality
• Week 4-6: Reduced burning and tingling
• Week 8-12: Improved balance and mobility

Everyone responds differently. We recommend giving your nerves at least 8 weeks to respond, as nerve repair takes time.

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.

Usually yes — B-vitamins work alongside most medications including Gabapentin and Lyrica.

Consult your doctor if you take: Blood thinners, Chemotherapy drugs, or Methotrexate.

Drugstore formulas typically use synthetic forms your body has to convert.

Nuvel uses active forms your body can use immediately: Methylcobalamin (B12), Benfotiamine (B1), P5P (B6), and L-5-MTHF (Folate).

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

30-day money-back guarantee. No questions asked. If you don't notice improvement within 30 days, simply email us for a full refund.

Most people tolerate this well. If you are sensitive, start with ½ dose for the first 3-5 days and take it in the morning.