GLP-1 Nutritional SupportThe side effects nobody warned you about.
Semaglutide and tirzepatide do their job. They also empty your plate — and with it, the nutrition your body was running on. Peptalyn is the daily formula built for what happens next.
60 vegetarian capsules · Money-back guarantee
Nausea and GI upset
The most common reason people stop treatment.
02Fatigue and low energy
Less food means fewer of the B vitamins energy runs on.
03Bone density loss
Rapid weight loss pulls mineral out of hip and spine.
04Hair thinning
Shedding that starts two to three months in.
05Nutrient gaps
A small appetite cannot reach a full daily value.
Nineteen ingredients, one job.
Replacing what the medication takes out.
60 vegetarian capsules · 30-day supply
Built for the specific gaps a GLP-1 opens.
Most multivitamins assume you're eating normally. On a GLP-1 you're not. You're eating less, digesting slower, and losing weight fast enough that your body starts drawing on reserves — mineral from bone, and whatever micronutrients aren't coming in.
Peptalyn covers four fronts at once: the nausea and GI slowdown, the energy metabolism that runs on B vitamins, the bone mineral at risk during rapid loss, and the micronutrient floor a small appetite can't reach.
What's actually happening, and what we put in the capsule for it.
Nausea and GI upset
Ginger · peppermint · DGL · spore probiotic · bromelain
Slowed gastric emptying is how these medications curb appetite. It is also why food sits heavy, why a normal portion suddenly feels like too much, and why nausea leads the list of reasons people abandon treatment before they reach a maintenance dose.
In the STEP 1 trial of semaglutide 2.4 mg, 44% of participants reported nausea, 32% diarrhea, 25% vomiting and 24% constipation.
Wilding et al., New England Journal of Medicine, 2021
What Peptalyn contributes
Rather than masking the feeling, the GI blend works on the mechanics behind it: gingerols for nausea, menthol for smooth-muscle spasm, deglycyrrhizinated licorice for gastric lining comfort, a spore-based probiotic that survives stomach acid, and bromelain to help break down protein when digestion has slowed.
Fatigue and low energy
Full methylated B-complex · chromium · magnesium
Eating a third less food means taking in roughly a third less of everything that converts food into usable energy. B vitamins are not stored in quantity, they are cofactors, and when intake drops the shortfall shows up as flatness — not dramatic illness, just less of you to go around by mid-afternoon.
Thiamin, riboflavin, niacin, B6, folate, B12, biotin and pantothenic acid are all required cofactors in carbohydrate, fat and protein metabolism.
Institute of Medicine, Dietary Reference Intakes, 1998
What Peptalyn contributes
Peptalyn carries the complete B-complex in active, methylated forms, dosed for someone eating substantially less rather than someone eating normally — plus chromium for glucose metabolism and magnesium glycinate, the cofactor most of these reactions quietly depend on.
Bone density loss
Vitamin D3 · K2 (MK-7) · magnesium
Weight comes off the whole body, not just fat. During rapid loss the skeleton gives up mineral, hip and spine first, and bone lost during a cut is not reliably regained afterward. It is the side effect with no symptoms, which is exactly why it goes unaddressed.
In a randomized trial, one year of GLP-1 treatment alone reduced bone mineral density at the hip and lumbar spine; combining treatment with exercise preserved it.
Jensen et al., JAMA Network Open, 2024
What Peptalyn contributes
D3 to absorb calcium, K2 as MK-7 to direct it into bone rather than soft tissue, and magnesium as the cofactor both require. Resistance training and adequate protein do the heavy lifting here; Peptalyn covers the micronutrient side of it.
Hair thinning
Biotin · B12 · folate · leucine · bromelain
Shedding usually begins two to three months after a sharp drop in intake, which is why it feels like it came out of nowhere. The mechanism is telogen effluvium: follicles shift early out of their growth phase when the body starts triaging where protein and micronutrients go.
Rapid weight loss and inadequate intake of protein, iron, zinc, biotin and B12 are established contributors to telogen effluvium.
Guo & Katta, Dermatology Practical & Conceptual, 2017
What Peptalyn contributes
Peptalyn supports the inputs hair depends on during the months your intake is lowest: biotin at 1,000% DV, the methylated B vitamins tied to cell turnover, L-leucine as an essential amino acid, and bromelain to help you actually absorb the protein you do eat.
Nutrient gaps
Bioavailable forms across all nineteen ingredients
Two things compound. You are eating less, so less comes in. And gastric emptying is slower, so what does come in is absorbed differently. Even a carefully built plate struggles to hit daily values at the intakes a GLP-1 produces.
Analyses of popular reduced-calorie diet plans found micronutrient sufficiency difficult to achieve, with deficiency risk rising as daily energy intake falls.
Calton, Journal of the International Society of Sports Nutrition, 2010
What Peptalyn contributes
Form matters more when volume is low. Peptalyn uses L-methylfolate instead of folic acid, methylcobalamin instead of cyanocobalamin, P5P instead of pyridoxine hydrochloride, MK-7 instead of K1, and magnesium glycinate instead of oxide — chosen for absorption and for tolerability on an unsettled stomach.
All nineteen, grouped by the problem they solve.
Serving size 2 capsules · 30 servings per container. Amounts shown per serving, as they appear on the label.
GI and nausea support
5 ingredientsEnergy metabolism
9 ingredientsBone health support
3 ingredientsAmino acids
2 ingredientsOther ingredients: hypromellose (vegetarian capsule), magnesium stearate, silicon dioxide. Iron is deliberately left out — it commonly worsens nausea and constipation.
Two capsules, with food, every day.
Take both capsules with your largest meal
Food helps you absorb the fat-soluble vitamins, and the ginger and peppermint are most useful when there is something to settle.
Or split them — one morning, one evening
If two at once feels like a lot on a slow stomach, one capsule twice daily reaches the same daily serving.
Do not stop during a dose escalation
Escalation weeks are when GI symptoms spike and intake drops hardest. That is the week the formula is doing the most.
Capsules may be taken together or as one capsule twice daily. Do not exceed the recommended serving unless directed by a healthcare professional.
Why your multivitamin isn't covering this.
From people on a GLP-1.
Placeholder — swap in verified reviewsPlaceholder review. Two or three sentences on the first two weeks — what changed, and what they had tried before this.
Placeholder review. Best if it names one specific side effect and what happened to it.
Placeholder review. A line here about the routine being easy to keep is worth more than superlatives.
Questions.
Can I take Peptalyn with semaglutide or tirzepatide? +
Yes. It is a nutritional supplement, not a medication, and there is no timing conflict with your injection day. Two capsules daily with food. As with anything you add, tell your prescriber — particularly if you take an anticoagulant, since vitamin K2 is in the formula.
When should I take it? +
With your largest meal. Food improves absorption of the fat-soluble vitamins (D3 and K2), and the ginger and peppermint are most useful when there is something in your stomach to settle.
Will it interfere with my weight loss? +
No. There are no calories, no stimulants, and nothing in the formula that increases appetite. Peptalyn addresses nutrition and side effects; the medication continues to do the appetite work.
Does it contain iron? +
No, by design. Oral iron is a well-known cause of nausea and constipation, which are the two symptoms most likely to make someone stop their GLP-1. If you have documented iron deficiency, that should be treated separately with your clinician.
How long before I notice anything? +
The GI blend — ginger, peppermint, DGL, and the probiotic — is the part people tend to notice first, often within the first week or two. The B vitamins, D3 and K2 work over weeks and months; the point of those is what you still have at the end of your course, not how you feel tomorrow.
Is it third-party tested? +
Yes. Peptalyn is manufactured in a GMP-certified facility and tested by an independent lab. It is non-GMO and the capsules are vegetarian.
Cover the gap while you're in it.
Sixty vegetarian capsules. Thirty days. Nineteen ingredients chosen for the side effects that make people quit — and for the bone mineral and micronutrient reserves that quietly go with them.
Try it through a full bottle. If it isn't doing anything for you, tell us and we'll refund it.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare professional before use if you are pregnant or nursing, have a medical condition, or are taking prescription or over-the-counter medications. Consult your healthcare professional before use if you take anticoagulant or blood-thinning medication.
Research cited on this page examines the individual nutrients and botanicals in Peptalyn, or the physiological effects of GLP-1 receptor agonists and rapid weight loss. It does not evaluate Peptalyn itself.
30-day supply · from $39.95/mo