Got a question? We've probably already answered it.
Everything you need to know about ordering, taking, and trusting SERN supplements straight from our team.
Delivery times, tracking, and free shipping
Standard UK shipping is £3.95. Orders over £30 qualify for free shipping. We also offer next-day delivery for £5.95 if you order before 2pm.
Standard delivery takes 3-5 business days. Next-day delivery is available if ordered before 2pm on weekdays.
Yes, we ship to most EU countries. Shipping costs and delivery times vary by location. International orders may be subject to customs fees.
You can cancel or modify your order within 1 hour of placing it. After that, orders are processed and cannot be changed. Contact us immediately if you need help.
Check with neighbours or your building reception. If you still can't locate it within 24 hours, contact our support team and we'll investigate with the courier.
How to take SERN, what to expect, and when
Place one strip on your tongue and let it dissolve completely. No water needed. Take at the recommended time for best results.
Most people notice improvements within 2-4 weeks of consistent use. Some benefits, like better sleep, may be felt sooner.
Yes, our products are designed to work together. However, we recommend starting with one product and adding others gradually.
We recommend taking Magnesium Glycinate 30-60 minutes before bed to support relaxation and sleep quality.
Yes! We've worked hard to create pleasant, natural flavours. Most customers find them enjoyable and much easier than swallowing pills.
Our Appetite Balance Strips support healthy metabolism and help manage cravings naturally. They're not a weight-loss pill — they work alongside a balanced diet and lifestyle.
What's inside, allergens, and who should check with a doctor first
Yes, all our products are vegan, gluten-free, and free from major allergens. Full ingredient lists are available on each product page.
Yes, all SERN products are independently tested for purity, potency, and safety by accredited third-party laboratories.
We recommend consulting your doctor before taking any supplements during pregnancy or breastfeeding.
Please consult your healthcare provider before combining supplements with prescription medications to avoid potential interactions.
We source premium ingredients from trusted suppliers worldwide, prioritising quality, sustainability, and ethical practices.
Our products are manufactured in MHRA-registered facilities and comply with UK food supplement regulations. Supplements are not evaluated by the FDA.
Managing your plan, pausing, and our returns policy
Subscribe and save 15% on every order. Choose your delivery frequency and we'll send your products automatically. Manage, pause, or cancel anytime.
Yes, absolutely. You can cancel, pause, or modify your subscription anytime through your account dashboard or by contacting support.
We offer a 30-day money-back guarantee. If you're not satisfied, contact us for a full refund on unopened products.
We recommend taking supplements consistently for at least 4 weeks. If you're still not satisfied, contact us within 30 days for a refund.
Log into your account and go to 'Manage Subscriptions' to update your address, delivery frequency, or payment details.
Still have a question?
Our support team typically replies within one business day.
Contact Support →