Vitamin Shots · South Boston
B12 Injections in Boston
Methyl-B12 shots for energy, mental clarity, and mood. $30 per injection, walk-ins welcome at both South Boston locations.
Medically directed and founded by Olivia Kelly, NP, NP, RN — Licensed since 2003.
Vitamin B12 is essential for energy, red blood cell production, nervous system function, and mood regulation. Low B12 is common in vegans, vegetarians, adults over 50, and anyone taking metformin or acid-reducing medications. Injections bypass poor oral absorption to deliver 100% of the dose. IV League uses methylcobalamin — the active, ready-to-use form of B12 — administered by licensed nurses under medical supervision.
Pricing
Transparent pricing
Single B12 Shot
$30
Methyl-B12, walk-in friendly
Add to any IV drip
+$20
Discounted when bundled
Monthly Member Rate
Save 20%+
Ask about weekly-shot membership
HSA/FSA accepted. Ask about membership pricing.
Benefits
Why patients choose B12 injections
Immediate energy support
Most clients feel a clarity + energy shift within 24–72 hours. Weekly shots produce sustained improvements in 3–4 weeks.
Better mood and mental clarity
B12 supports neurotransmitter production — many clients report improved focus, less brain fog, and steadier mood.
Methyl-B12 (the active form)
We use methylcobalamin, not cheap cyanocobalamin. Your body uses methyl-B12 immediately — no conversion required.
In-and-out in 5 minutes
Faster than the coffee line. Walk in, get your shot, and you're back to your day.
Who it's for
Is B12 injections right for you?
- Vegans and vegetarians (dietary B12 deficiency risk)
- Adults over 50 (absorption declines with age)
- Anyone on metformin, PPIs, or H2 blockers
- Chronic fatigue, low energy, or brain fog
- Athletes and endurance trainers
- New mothers and shift workers
The process
What to expect at your visit
Walk in
Both A Street and L Street locations accept B12 walk-ins during business hours.
Quick screen
Your nurse confirms allergies and any medications. Takes under 2 minutes.
The injection
A quick intramuscular shot in the shoulder or hip. Most clients say they barely feel it.
Feel the difference
Energy and clarity within 24–72 hours. Repeat weekly or bi-weekly for sustained results.
Locations
Two South Boston clinics
IV League Hydration — L Street (East Campus)
47 L StreetSouth Boston, MA 02127
Mon – Tue: 10am – 6pm · Wed: Closed · Thu – Fri: 10am – 6pm · Sat – Sun: 10am – 2pm
IV League Hydration — A Street (West Campus)
36 A StreetSouth Boston, MA 02127
Mon – Tue: 10am – 6pm · Wed: Closed · Thu – Fri: 10am – 6pm · Sat – Sun: 10am – 2pm
Serving South Boston, Seaport, Fort Point, City Point, Dorchester Heights, the Financial District, Back Bay, Beacon Hill, the South End, the North End, Cambridge and Brookline.
Neighborhood pages:Back BayBeacon HillSouth EndNorth EndSeaportCambridgeBrookline
See our full guide to IV therapy in Boston. Mobile IV service available anywhere in Greater Boston — learn about mobile IV in Boston.
FAQ
Common questions
How much do B12 injections cost near me?
B12 shots at IV League Hydration in South Boston are $30 per injection. Members save on every visit and can add B12 to any IV drip. Package pricing is available for weekly injection clients.
How often should I get B12 injections?
For general energy support, weekly or bi-weekly. Vegans, vegetarians, and adults over 50 often benefit from weekly injections. If you're on metformin or acid-reducing medications, a weekly cadence is common.
Do B12 injections work better than pills?
Yes — B12 has poor oral absorption (only 1–2% of oral B12 is absorbed). Injections deliver 100% of the dose directly into muscle for immediate use by your body.
How quickly will I feel the effects?
Most clients notice increased energy and mental clarity within 24–72 hours of their first injection. Regular weekly shots produce a sustained energy improvement over 3–4 weeks.
Are B12 shots safe?
B12 is water-soluble — your body excretes any excess. Injections at IV League are administered by licensed nurses under medical supervision. B12 has one of the safest profiles of any injectable.
Which type of B12 do you use?
We use methylcobalamin — the active, bioavailable form of B12. Many clinics use cheaper cyanocobalamin, which requires your body to convert it. Methyl-B12 is ready to use immediately.
Ready to book b12 injections?
Same-week appointments available. Free consultations for weight loss and peptide clients.