Alternatives to TdVax If You Can't Fill Your Prescription

TdVax is no longer available. MassBiologics permanently discontinued the vaccine in early 2024, and all remaining inventory was exhausted by June of that year. If you or your provider was counting on TdVax for your tetanus and diphtheria booster, you need to know exactly what your alternatives are — and how they compare. The good news is that you have solid options.

Why TdVax Can't Be Substituted Directly (And Why That's Okay)

TdVax was a Td (tetanus and diphtheria) vaccine — it did not include protection against pertussis (whooping cough). When it was discontinued, there was no drop-in generic replacement. However, there are both Td-equivalent and Tdap (tetanus, diphtheria, and pertussis) options that provide at minimum the same protection TdVax offered, with most also offering added pertussis coverage.

Alternative #1: Tenivac (Best Direct Equivalent)

Tenivac, manufactured by Sanofi Pasteur, is the most direct equivalent to TdVax. It is an FDA-approved Td vaccine containing 5 Lf of tetanus toxoid and 2 Lf of diphtheria toxoid per 0.5 mL dose. Like TdVax, it is approved for persons 7 years of age and older and does not contain a pertussis component.

Tenivac is the go-to alternative for patients who:

• Have a contraindication to the pertussis (acellular pertussis, or aP) component in Tdap vaccines
• Have previously experienced encephalopathy after a pertussis-containing vaccine
• Have a documented severe reaction to the pertussis component in Tdap

Important caveat: Since TdVax's discontinuation, Tenivac has been operating under CDC ordering controls. It may be harder to find than TdVax was, and some pharmacies may have limited or no supply on a given day. Persistence and a broad pharmacy search are often required.

Alternative #2: Adacel (Tdap — CDC's Preferred Substitute)

Adacel, made by Sanofi Pasteur, is a Tdap vaccine that provides all the same tetanus and diphtheria protection as TdVax, plus protection against pertussis. The CDC explicitly recommends that most patients who would have received a Td vaccine use Adacel or another Tdap vaccine instead.

Adacel is approved for people ages 10 through 64. It is one of the most widely available tetanus vaccines at pharmacies across the United States. For routine 10-year boosters, wound prophylaxis, and nearly all situations where TdVax was previously used, Adacel is an excellent and commonly preferred substitute.

Alternative #3: Boostrix (Tdap — For Ages 10 and Up)

Boostrix, manufactured by GSK, is another Tdap vaccine and a direct competitor to Adacel. It is approved for persons ages 10 and older, including adults and the elderly — making it useful across a broad age range. Boostrix provides the same categories of protection as Adacel: tetanus, diphtheria, and pertussis.

If Adacel is unavailable at your pharmacy, Boostrix is an equally effective option. The two vaccines are clinically interchangeable for most indications. Ask your pharmacist which Tdap vaccine they currently have in stock.

Which Alternative Is Right for Me?

Here's a simple guide to help you and your provider decide:

You had TdVax for routine booster, no special history: Choose Adacel or Boostrix. The CDC supports this, and you get added whooping cough protection as a bonus.

You had TdVax because of a pertussis contraindication: You need Tenivac. Discuss with your provider and search thoroughly — it's still being manufactured.

You are 65 or older: Boostrix is approved for all ages 10+. Adacel is labeled for 10 through 64. For adults over 65, your provider may prefer Boostrix or Tenivac. Discuss with your provider.

You are pregnant: Tdap (Adacel or Boostrix) is the CDC-recommended vaccine during every pregnancy to protect newborns from pertussis. Do not use a Td-only vaccine if you are pregnant unless specifically directed by your OB.

Do I Need a New Prescription If My Doctor Prescribed TdVax?

Vaccines are typically not prescribed in the traditional sense — they are recommended and administered by providers or pharmacists. If your provider recommended TdVax and it is unavailable, call their office to clarify which alternative is appropriate for your specific situation. Most providers can update their recommendation with a quick call, and pharmacists can often counsel you on the available options.

Will My Insurance Cover These Alternatives?

Most major insurance plans, including Medicare and Medicaid, cover all recommended tetanus vaccines at no cost for eligible patients. The ACA mandates preventive vaccine coverage without cost-sharing for in-network providers. Tenivac, Adacel, and Boostrix are all on ACIP's recommended schedule, so all three should be covered.

For a deeper look at costs and savings programs, read: How to Save Money on TdVax Alternatives in 2026.

How to Find These Alternatives Near You

If your local pharmacy doesn't have the vaccine you need in stock, medfinder can call pharmacies in your area to check availability and save you the time and frustration of calling each one yourself. Given the current Td vaccine supply situation, searching multiple pharmacy types — retail chains, independent pharmacies, doctor's offices, and clinics — is often necessary.