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Updated October 2026

Best Weight Loss Injections of 2026

We compared the leading online providers of semaglutide and tirzepatide on price, medical oversight, support and delivery — so you can choose a trusted, affordable treatment with confidence.

Medically reviewed by Dr. Hannah Brooks, MD
  • 7 providers compared
  • Prescription required for all treatments

Top-rated weight loss injection providers

Ranked by our editorial score, which may be influenced by commissions we receive.

2
Best Value

Seasonal sale: plans from just $89/month

  • Buy now, pay later with Affirm, Klarna & Afterpay
  • No price hikes — same price at every dose
  • No insurance needed and no hidden fees
SemaglutideTirzepatide
9.6
Excellent
From $89/month Visit Site Visit altRx
3
Fast Shipping

Branded and compounded GLP-1 options from $69/month

  • GLP-1 pills, Zepbound®, Wegovy® and semaglutide available
  • Free shipping — arrives in 1–2 days
  • $69 semaglutide / $119 tirzepatide
SemaglutideTirzepatideOral GLP-1
9.5
Excellent
$69 semaglutide / $119 tirzepatide Visit Site Visit Embody
4
Best Support

Save up to 48% on GLP-1s, from $129/month

  • Compounded semaglutide and tirzepatide
  • 24/7 support and unlimited video calls with clinicians
  • Personalised dosing reviewed by licensed clinicians
SemaglutideTirzepatide
9.2
Excellent
5
Price Lock

Tirzepatide at one flat $179 price for every dose

  • One fixed tirzepatide price — no surprises later
  • 100% online with free 2-day discreet shipping
  • No commitment, cancel anytime, full refund if not prescribed
Tirzepatide
9.0
Excellent
6
Branded Meds

Branded GLP-1 medications with a free insurance check

  • Wegovy®, Zepbound®, Ozempic® and Foundayo® available
  • Free insurance coverage check
  • Save up to 50% with an annual plan
Wegovy®Zepbound®Ozempic®
8.9
Very Good
Save up to 50% annually Visit Site Visit Ro
7

Doctor-led GLP-1 treatment personalised to your needs

  • Oral and injectable semaglutide and tirzepatide
  • Free, discreet shipping
  • FSA & HSA eligible
SemaglutideTirzepatideOral GLP-1
8.8
Very Good
Oral & injectable options Visit Site Visit Willow

Side-by-side comparison

A quick look at what each provider offers. Prices are the lowest advertised starting prices and may change.

#ProviderStarting price / offerTreatmentsScore
1 TrimRx Exclusive $140 discount Semaglutide, Tirzepatide 9.8 Visit
2 altRx $89/month Semaglutide, Tirzepatide 9.6 Visit
3 Embody $69/month Semaglutide, Tirzepatide, Oral GLP-1 9.5 Visit
4 LevelsRx $129/month Semaglutide, Tirzepatide 9.2 Visit
5 Gala Health $179/month Tirzepatide 9.0 Visit
6 Ro Varies by plan Wegovy®, Zepbound®, Ozempic® 8.9 Visit
7 Willow Varies by plan Semaglutide, Tirzepatide, Oral GLP-1 8.8 Visit

What are weight loss injections?

Weight loss injections are prescription medications that copy the action of natural gut hormones — mainly GLP-1 (glucagon-like peptide-1), and in newer drugs also GIP. These hormones are released after you eat and tell your brain you are full.

By mimicking them, the medication:

  • reduces appetite and “food noise” between meals,
  • slows down how fast the stomach empties, so you stay full for longer,
  • helps regulate blood sugar and insulin response.

The result is that eating less feels natural rather than a constant battle. They are designed for adults living with obesity, or with overweight plus a weight-related health condition, and must be prescribed by a licensed clinician.

How much do weight loss injections cost?

Price depends mostly on whether you choose a branded pen or a compounded version, and on how a provider bundles its care.

$69–$199Typical monthly price for compounded semaglutide
$119–$299Typical monthly price for compounded tirzepatide
$500+Common cash price for branded pens without coverage

Many providers now charge one flat price at every dose, so your bill doesn’t jump as your dose increases. Others offer discounts for paying three, six or twelve months upfront. Insurance cover for weight loss alone is limited, so most people pay out of pocket — check whether a provider includes the consultation, medication and shipping in its price or charges a separate membership fee.

What’s included in a typical plan?

🩺

Clinical consultation

An online assessment reviewed by a licensed doctor or nurse practitioner.

💉

Medication & supplies

Your pens or vials, needles, alcohol swabs and clear dosing instructions.

📈

Progress tracking

Apps or portals to log weight, side effects and dose changes.

💬

Ongoing support

Messaging with clinicians, regular check-ins and, with some, nutrition coaching.

📦

Discreet delivery

Cold-packed, unbranded shipping straight to your door — often free.

🔁

Flexible plans

Month-to-month billing or discounted multi-month bundles.

Types of weight loss medication

Active ingredientCommon brand namesHow it worksTaken
SemaglutideWegovy®, Ozempic®GLP-1 receptor agonistWeekly injection (oral tablet also available)
TirzepatideZepbound®, Mounjaro®Dual GIP / GLP-1 receptor agonistWeekly injection
LiraglutideSaxenda®GLP-1 receptor agonistDaily injection
Phentermine–topiramate ERQsymia®Appetite suppressant + anticonvulsantDaily capsule

Risks and side effects

Most side effects are digestive, mild to moderate, and strongest in the first weeks or right after a dose increase. Raising the dose slowly is the best way to keep them manageable.

Common

  • Nausea
  • Constipation or diarrhoea
  • Bloating and burping
  • Fatigue
  • Reduced appetite and mild headaches

Rare but serious

  • Pancreatitis
  • Gallbladder problems
  • Kidney strain from dehydration
  • Low blood sugar (mainly with other diabetes drugs)

Who should avoid them: people with a personal or family history of medullary thyroid cancer or MEN2, anyone who is pregnant, breastfeeding or trying to conceive, and people with a history of pancreatitis or severe gastrointestinal disease. A clinician will screen for these during your consultation.

How often do you inject?

Semaglutide and tirzepatide are taken once a week, on the same day each week, into the stomach, thigh or upper arm. Liraglutide is a daily injection. Every programme starts on a low dose and steps up every four weeks or so until you reach a maintenance dose that balances results and tolerability.

How to choose the right medication

  1. Your health profile. Conditions such as type 2 diabetes, heart disease or sleep apnoea can make one medication a better fit.
  2. Your weight loss goal. Tirzepatide has shown the largest average weight loss in trials; semaglutide has the longest track record.
  3. Dosing preference. Weekly injections suit most people; oral options exist if you dislike needles.
  4. Side-effect tolerance. If you are sensitive to nausea, a slower dose escalation matters.
  5. Budget. Compounded versions cost far less than branded pens; check for flat pricing.
  6. Level of support. Decide whether you want coaching and frequent check-ins or a simple prescription service.

Benefits of weight loss injections

15–22%

Average body weight lost in major clinical trials over about 68–72 weeks

↓ Hunger

Fewer cravings and less “food noise” make portion control easier

↑ Metabolic

Better blood sugar, blood pressure and cholesterol for many patients

♥ Heart

Semaglutide has been shown to lower major cardiovascular events in people with heart disease

Many users also report better sleep, more energy, improved mobility and greater confidence as the weight comes off.

Tirzepatide vs semaglutide

TirzepatideSemaglutide
MechanismDual GIP + GLP-1GLP-1 only
Brand namesZepbound®, Mounjaro®Wegovy®, Ozempic®
Average weight loss in trialsUp to ~20–22%Around ~15%
DosingWeekly, 2.5 mg up to 15 mgWeekly, 0.25 mg up to 2.4 mg
Typical compounded priceHigherLower
Best forMaximum weight lossProven long-term track record, lower cost

In a head-to-head trial, people on tirzepatide lost noticeably more weight on average than those on semaglutide. That said, both are highly effective and the right choice depends on your health, budget and how well you tolerate each one.

Wegovy® vs Ozempic®

Wegovy®Ozempic®
Active ingredientSemaglutideSemaglutide
Approved forChronic weight managementType 2 diabetes
Maximum weekly dose2.4 mg2.0 mg
Weight loss useOn-labelOff-label
Insurance coverageVaries; often limited for weight lossMore often covered for diabetes

Getting started: how online prescriptions work

  1. 1

    Complete a health questionnaire

    Share your weight, medical history and current medications — usually in under 10 minutes.

  2. 2

    Clinician review

    A licensed provider reviews your answers, sometimes with a video or phone call, and may request lab work.

  3. 3

    Prescription & delivery

    If suitable, your prescription is filled by a partner pharmacy and shipped cold-packed to your door.

  4. 4

    Ongoing monitoring

    Regular check-ins to track progress, manage side effects and adjust your dose.

What are compounded medications?

Compounded semaglutide and tirzepatide are made by licensed compounding pharmacies rather than the original manufacturer. They contain the same active ingredient but are not regulator-approved finished products, which means they haven’t been through the same testing for quality and consistency.

How to choose a safe compounded provider

  • They name the licensed pharmacy that prepares the medication.
  • A real clinician reviews every patient before prescribing.
  • Dosing instructions and supplies are clear and complete.
  • They are transparent about pricing and how to cancel.

What happens when you stop treatment?

Once you stop, hunger typically returns within a few weeks and some weight regain is common — studies show many people regain a significant share of lost weight within a year. To protect your results, talk to your prescriber about tapering gradually or moving to a lower maintenance dose, and keep up the protein intake, strength training and eating habits you built during treatment.

How we rank providers

Each provider is scored out of 10 across seven areas. Read the full methodology.

Medical oversightLicensed clinicians, proper screening and follow-up
Medication transparencyClear on branded vs compounded and pharmacy sources
Pricing & valueHonest, predictable costs and no hidden fees
SupportAccess to clinicians, coaching and fast responses
ShippingSpeed, cold-chain packaging and discretion
Customer experienceEase of sign-up, reviews and cancellation
Lifestyle integrationNutrition, activity and long-term maintenance tools

What users say

We read through hundreds of public discussions and reviews from people using GLP-1 treatments. A few themes came up again and again. The quotes below are paraphrased to summarise those themes; they are not verbatim reviews of any provider listed here.

“The food noise just… stopped. For the first time I’m not thinking about snacks all day.”

Appetite control

“The first two weeks after each dose bump were rough, but the nausea settled down.”

Side effects

“Switching to a flat-price provider saved me hundreds compared with my pharmacy.”

Cost

“Lifting weights and hitting my protein made a huge difference in how I looked, not just the scale.”

Maintenance

Expert insights

Dr. Hannah Brooks, MDMedical reviewer, internal medicine & obesity care
  • Think long term. Obesity is a chronic condition, and these medications work best as an ongoing therapy, not a quick fix.
  • Go slow on dosing. Gradual increases reduce side effects and help people stay on treatment.
  • Protect your muscle. Aim for adequate protein and add resistance training two to three times a week.
  • Stay supervised. Choose a provider with real clinical follow-up, and report any severe stomach pain straight away.

Frequently asked questions

How quickly do weight loss injections start working?

Most people notice reduced appetite within the first one to two weeks. Visible weight loss usually builds over the first two to three months as the dose is gradually increased, with the largest results typically seen between six and twelve months of consistent treatment.

Do I still need to change my diet?

GLP-1 medications make it much easier to eat less because they reduce hunger and help you feel full sooner, but they work best alongside sensible eating, enough protein and regular movement. Clinical trial results were achieved together with lifestyle changes, and those habits also help you keep the weight off.

Are weight loss injections approved by regulators?

Branded medications such as Wegovy® (semaglutide) and Zepbound® (tirzepatide) have been approved by drug regulators specifically for chronic weight management. Ozempic® and Mounjaro® are approved for type 2 diabetes and are sometimes prescribed off-label for weight loss. Compounded versions are not regulator-approved finished products.

Is compounded semaglutide legal and safe?

Compounded semaglutide and tirzepatide are prepared by licensed compounding pharmacies, usually at a lower price than branded pens. They are legal when prescribed by a licensed clinician and made by a properly regulated pharmacy, but they do not go through the same approval process as branded products. Always choose a provider that names its pharmacy partner and requires a real medical consultation.

What is the difference between Ozempic® and Wegovy®?

Both contain semaglutide. Ozempic® is approved for type 2 diabetes with a maximum weekly dose of 2 mg, while Wegovy® is approved for weight management and goes up to 2.4 mg weekly. The higher Wegovy® dose is the one studied in weight loss trials.

Is it safe to stop taking the medication?

Stopping is not dangerous in itself, but appetite usually returns over a few weeks and many people regain some weight. Talk to your prescriber before stopping — they may suggest tapering the dose or a maintenance plan built around nutrition, strength training and regular check-ins.

Will insurance cover weight loss injections?

Coverage varies widely and many plans do not cover medication prescribed purely for weight loss. Some providers offer a free insurance check, while others are cash-pay only with fixed monthly pricing. Several also accept health savings or flexible spending accounts.

How do I get a prescription online?

You complete an online health questionnaire, then a licensed clinician reviews it — sometimes with a video or phone consultation. If treatment is suitable, the prescription is sent to a partner pharmacy and the medication ships to your door, followed by regular check-ins to adjust your dose.

Our #1 pick

TrimRx — Semaglutide and tirzepatide plans with an exclusive $140 discount

$140 off all plans · Free consultation and unlimited clinician check-ins

Visit TrimRx →