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SOFT CHEWS

3500+ Reviews

Advanced Muscle & Weight Support

Made with clinically proven ingredients

PETVI is made with clinically studied ingredients shown to promote healthy weight gain, lean muscle growth, and full-body strength—naturally and safely.

VET LOVED & APPROVED

"I’ve seen the best results with PETVI Muscle & Weight Support Chews."

DR. Meghan Klark

SOFT CHEWS

3500+ Reviews

Advanced Muscle & Weight Support

Developed by VETs and canine nutrition experts, PETVI Muscle & Weight Support helps dogs safely gain weight, build lean muscle, and restore energy, starting from the inside out.

Ships next day, order in

Countdown Timer

02 hrs, 15 mins

30 day moneyback guarantee

If you are not 100% satisfied, contact us and we’ll refund you, ZERO questions asked!

Benefits

Builds healthy weight & lean muscle

Vet-formulated & dog-parent approved

Formulated* in the USA with premium ingredients

Backed by science - fueled by love

Dosage and weight guide

✅ Consistency matters. Make it part of your dog’s daily routine to see real, lasting results.

🦴 For supplemental feeding only. Not a replacement for a balanced diet.
📅 Give with meals to support digestion and nutrient absorption.

Nutrition facts

Made with clinically

proven ingredients

PETVI is made with clinically studied ingredients shown to promote healthy weight gain, lean muscle growth, and full-body strength—naturally and safely.

VET LOVED & APPROVED

"I’ve seen the best results with PETVI Muscle & Weight Support Chews."

DR. Meghan Klark

3500+ Reviews

what people are saying

CLINICALLY SUPPORTED MUSCLE & WEIGHT GAIN

In a series of veterinary-backed studies, dogs supplemented with key nutrients found in PETVI, saw measurable improvements in body composition, energy, and strength.
L-Carnitine has been shown to increase lean muscle mass, while Omega-6 fatty acids help support caloric absorption and healthy weight gain, especially in underweight, senior, or recovering dogs

17%+

Increase in healthy weight in just 8 weeks*

Clinically Validated Ingredients

30+ Dogs Across Multi-Stage Trials

Noticeable Gains in Muscle & Weight

Proven in Placebo-Controlled Trials

17%+

Increase in healthy weight over the placebo in just 8 weeks*

*Based on clinical studies of individual ingredients, not the finished product.While studies suggest benefits, results may vary. This product is not intended to diagnose, treat, cure, or prevent any disease.

Powerful Ingredients, Proven by Science

LEUCINE

Builds lean muscle and sparks protein synthesis.

This essential amino acid activates muscle growth at the cellular level, helping your dog rebuild strength, especially after illness, aging, or weight loss.

L-CARNITINE

Turns fat into fuel while preserving muscle.

By transporting fatty acids into cells for energy, L-Carnitine supports steady weight gain and lean muscle retention—ideal for underweight or recovering dogs.

ARGININE

Improves circulation and fuels tissue repair.

This vital amino acid promotes healthy blood flow and supports collagen production, aiding muscle recovery and overall vitality.

GROWTH SUPPORT BLEND™

Strengthens bones, metabolism, and safe growth.

A synergistic mix of D3, Zinc, B-Vitamins, and Omegas that helps build sturdy bones, support enzymes, and fuel energy—all essential for healthy weight gain.

WHAT TO EXPECT IN THE FIRST 8 WEEKS

Prescription meds can work fast but often cause side effects.

PETVI chews naturally rebuild strength and weight, gently and safely.

WEEK 1–2

APPETITE & ENERGY RETURN

Your dog begins eating more regularly and shows signs of increased energy.

WEEK 3–4

VISIBLE GAINS & MOBILITY BOOST

Weight starts coming back—especially around the ribs and hips.

WEEK 5-6

STRENGTH & MUSCLE COMING BACK

Amino acids and nutrients help rebuild muscle. Getting up faster and walking steadier.

WEEK 7-8

FULL-BODY TURNAROUND

Dogs look fuller, stronger, and more like themselves again.

SIGNS YOUR DOG NEEDS MUSCLE & WEIGHT SUPPORT

Your dog can’t say they’re struggling—but their body will show it...

Visible Ribs or Spine

If your dog’s bones are showing, it may signal poor nutrient absorption or muscle loss—even if they eat regularly.

Low Energy or Weakness

Struggling on walks, avoiding stairs, or tiring quickly can be signs of declining muscle mass or strength.

Loss of Appetite

Dogs who lose interest in food may miss essential nutrients, leading to unwanted weight loss and frailty.

Shaky Legs or Trouble Standing

Difficulty standing up, especially after rest, could point to deteriorating muscle tone and joint weakness.

Recovery POST Illness or Surgery

If your dog seems fragile or isn’t bouncing back, added muscle support can help rebuild strength and confidence.

Loved by pets, endorsed by vets

meet dr. Meghan klark

I’ve seen the best results with PETVI Muscle & Weight Support. It’s powered by a clinically studied blend of essential amino acids and nutrient-rich omegas that help dogs build healthy weight, energy, and strength naturally and effectively.

Frequently ASked Questions

How can PETVI help my dog?

PETVI supports healthy weight gain, muscle strength, energy, and recovery. It's ideal for underweight dogs, seniors losing muscle, dogs recovering from illness or surgery, and picky eaters who aren’t meeting their nutritional needs.

Where is PETVI made?

PETVI is proudly formulated in the USA and made in a GMP-certified & FDA-cleared facility using premium & human-grade ingredients.

How many chews should I give my dog?

PETVI is dosed by weight:

Below 22 lbs: 2 chews/day

22 to 66 lbs: 3 chews/day

Over 66 lbs: 4 chews/day
Always give with meals for best absorption. Consistency is key for results.

Can PETVI be used with other supplements or medications?

Yes, in most cases. However, if your dog is on any medication or other supplements, it's always best to check with your vet before combining products.

How long until I see results?

Most pet parents start seeing early improvements in appetite, energy, or weight within 2–4 weeks. Visible muscle gain and strength typically improve after consistent use for 6–8 weeks.

Do dogs like the taste?

We knew that there was no point in making something that helped gain weight this well if you couldn’t get your dog to eat them. What’s the point? Dogs love the taste of PETVI Chews! Each treat is flavored with pork broth, and our dogs can’t get enough of them!

How should I store the chews?

Store in a cool, dry place with the lid tightly sealed. No refrigeration needed.

When will I receive my order?

- For U.S residents, please allow 2-3 business days to process your order. We’ll send your tracking details the moment the order ships.

- You can expect to receive your package within 7 to 10 business days after your order has shipped, depending upon your location.

How do I track my order?

You can track your order by chatting with us on our website or by emailing us at support@petvi.co

Need help? Questions? Concerns?

do not hesitate to contact us!

support@PETVI.co

100% Satisfaction Guaranteed

We stand behind our products. If you are not 100% satisfied, contact us and we’ll refund your purchase price, no questions asked.

Advanced Muscle & Weight Support

$34.99