Two formulas.
Each does one job well.
One for your hair, one for your lungs. Every active is named and every dose is on the label.
Find your formulaFind your formula
What's your body telling you?
Pick what matters to you and we'll match you with the right Richvell formula. Every order is covered by a money-back guarantee.
Pick one or more.
Proof
100,000+ customers, on the record.
"I put one dropper along my part at night, and after about 5 weeks the shedding just stopped. Now at 4 months I have baby hairs sprouting everywhere and you can no longer see my scalp."
Linda · Verified buyer · FST-5
Two concerns.
Two formulas.
Hair that stays*+
FST-5 Peptide Complex works on thinning and shedding at the root, for women and men. Three signaling peptides and 2% aminexil, one dropper a night, no minoxidil and no hormones. See FST-5
Clearer airways*+
NAC Capsules give 600 mg of pure N-acetyl cysteine per capsule. NAC helps thin thick, sticky phlegm so it clears more easily. See NAC
Immune defense*+
NAC is the building block your body uses to make glutathione, which white blood cells rely on to stay strong. Two capsules a day is the amount used in a six-month winter study.
A routine you can keep+
Auto-refills arrive on your schedule at a lower price, so you never run out. Pause, skip or cancel any time by email, no phone calls.
Built on research
Trust the dose, not the hype.
We start with the published research on an ingredient, then put the amount that research used on the label.

262 adults, most over 65, took 600 mg of NAC twice a day for six winter months. Their cell-mediated immunity improved significantly.
Questions
Straight answers.
Anything else, write to support@richvell.com. A person reads every email.
Which Richvell formula is right for me?+
Richvell makes two formulas. FST-5 Peptide Complex is for thinning hair and shedding in women and men. NAC Capsules are for thick phlegm, clearer airways and immune support. The picker above matches you in a few taps.
Can I use FST-5 and NAC together?+
Yes. FST-5 goes on your scalp at night and NAC is a capsule you swallow, so they fit side by side in a daily routine. If you take prescription medicine, are pregnant or nursing, or have a medical condition, check with your doctor before starting any supplement.
What is NAC, and how do I take it?+
NAC (N-acetyl cysteine) supplies cysteine, the building block your body uses to make glutathione, which white blood cells depend on. Each capsule holds 600 mg. Take one in the morning and one in the evening, 1,200 mg a day, the amount used in the six-month De Flora winter study.*
Keep taking any medicine your doctor prescribed. NAC is a daily supplement, not a replacement for it.
What is the guarantee?+
Every Richvell product comes with a money-back guarantee: 100 days on FST-5 and 30 days on NAC Capsules. The exact terms are on each product page. Email support@richvell.com and a person takes care of it.
Do refills renew automatically?+
Only if you choose auto-refill at checkout. Refills ship on your schedule at the lower price, and you can pause, skip or cancel any time by emailing us. No phone calls, no hoops.
How fast do orders ship?+
Most orders leave within 1 to 2 business days, and every bundle ships free. You get tracking by email as soon as your order is on its way.
Where can I buy Richvell?+
Only at richvell.com and our official product pages. Richvell is not sold on Amazon or eBay, and listings there are not ours and are not covered by our guarantee.
Still deciding? Find your formula
The science of NAC
Strong white blood cells run on glutathione.
After 60, glutathione inside white blood cells runs lower, and they fight with less strength.
NAC supplies cysteine, the scarce building block your body needs to make more glutathione.
With more glutathione to work with, white blood cells stay strong through the winter.*
Quality and care
Made carefully. Priced fairly.
Every dose on the label+
Each active is listed by name with its amount, so you always know exactly what you are taking.
GMP certified facilities+
Our supplements are made in facilities that follow current Good Manufacturing Practice, with batch records for every run.
Money-back guarantee+
Every order is covered: 100 days on FST-5 and 30 days on NAC Capsules. Email us and a person takes care of it.
Ships in 1 to 2 days+
Most orders leave within 1 to 2 business days with tracking, and every bundle ships free.
Most-loved bundles
Stock up and save.
Our most popular bundles cost less per bottle and ship free. Every one is covered by our money-back guarantee.
Shop all formulas
FST-5 · Buy 2 Get 1 Free
A 90-day supply of the nightly peptide serum for thinning hair, for women and men.

NAC · Buy 2 Get 1 Free
Three bottles of 600 mg NAC capsules for thick phlegm and immune support.
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