
Three things you'll notice in the first month
How it works
The research behind overnight recovery
Magnesium's role in muscle recovery has been studied directly. A 2024 systematic review in the Journal of Translational Medicine gathered the studies on magnesium and exercise soreness. All four pointed the same way: less soreness or less muscle damage in the people taking magnesium.
In one of them, adults took magnesium glycinate, the same amino-acid-bound form used in Sirva, for 10 days before a hard bench press workout. Their soreness was significantly lower at 24, 36 and 48 hours afterward. The comparison group saw no change.
The night matters too. In another study, a single night without sleep cut muscle rebuilding by 18%. That's why Sirva is made to be taken before bed, so your recovery has the full night to work.
These studies are small, and researchers are calling for larger ones. We'd rather tell you that than overstate 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.
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Try It Risk-Free for 60 Days
We know how frustrating it is to try product after product and still wake up sore. That's why every order is backed by our 60-day money-back guarantee. If your mornings don't feel easier within 60 days, just reach out and we'll refund you in full. No questions asked, and no bag to return.
You got questions, we got answers!
Frequently Asked Questions
How long before I notice a difference?
How long before I notice a difference?
Magnesium's muscle-relaxing effects build with nightly use, usually over 2 to 4 weeks. Give it a full month of taking it every night. That's why our 60-day money-back guarantee gives you plenty of time to find out.
I've already tried magnesium and it didn't work. Why is this different?
I've already tried magnesium and it didn't work. Why is this different?
Most people start with magnesium oxide, the cheapest and most common form. It's poorly absorbed, and much of it stays in your gut, which is why it often upsets the stomach. Sirva uses only magnesium bisglycinate, which is bound to glycine so your body absorbs it through the same pathway it uses for protein. It's gentler on your stomach, easier to absorb, and contains no oxide at all.
Do I need to work out for this to help?
Do I need to work out for this to help?
No. Most of the research on magnesium and soreness was done with people who exercise, but your muscles use magnesium to relax no matter what tired them out: a long shift on your feet, carrying kids, or a day at a desk.
Why take it at night instead of before a workout?
Why take it at night instead of before a workout?
Your body does much of its repair while you sleep. Taking Sirva before bed supports restful sleep and lets magnesium help your muscles relax during the hours your body is recovering.
Does this replace stretching or foam rolling?
Does this replace stretching or foam rolling?
No, and it doesn't need to. Rollers, stretching and heat work on your muscles from the outside. Sirva works from the inside, while you sleep. Keep your routine and add this to it.
How many gummies should I take, and when?
How many gummies should I take, and when?
Take two gummies daily. We suggest taking them 30 to 60 minutes before bed as part of your wind-down routine. Don't take more than the recommended dose.
Can I take this with other supplements or medication?
Can I take this with other supplements or medication?
If you take any medication, check with your doctor first. Magnesium can make certain antibiotics (such as ciprofloxacin and tetracyclines) less effective, so take Sirva at least 2 hours before or 4 to 6 hours after them. It can also affect osteoporosis medications called bisphosphonates, so space those apart as well. If you already take another magnesium supplement, count it toward your daily total.
Are there any side effects?
Are there any side effects?
Magnesium bisglycinate is one of the gentlest forms of magnesium on the stomach. A small number of people find glycinate makes them feel restless or sleep worse. If that happens, stop taking it, and our 60-day guarantee has you covered. Anyone with kidney problems should talk to a doctor before taking magnesium.
Is this third-party tested?
Is this third-party tested?
Yes. Sirva is third-party tested and made in a GMP-certified, FDA-registered facility.
Is this safe during pregnancy or while breastfeeding?
Is this safe during pregnancy or while breastfeeding?
Talk to your doctor before taking any supplement during pregnancy or while breastfeeding.
