Sigma Formulas – Website FAQs
Find answers to common questions about our website.
Sigma Formulas combines science-backed ingredients with clean, transparent formulations. Every product is developed using research-led evidence, manufactured in the USA, and third-party tested for quality, purity, and effectiveness.
Yes — all Sigma Formulas products are proudly manufactured in the USA in FDA-certified facilities that follow strict quality and safety standards
Many of our products are vegan or vegetarian-friendly. Each product page clearly states whether it is suitable for vegans, vegetarians, or contains animal-derived ingredients such as gelatine.
Yes — we only use ingredients supported by credible scientific research. Each formula is designed with effective dosages and evidence-based combinations to ensure real results.
Each product label includes clear usage instructions and recommended dosage. We advise following the directions provided and consulting your healthcare professional if you have any medical conditions or are taking medication.
This depends on the supplement and your individual health goals. Many users notice benefits within 2–4 weeks of consistent use, but results may vary based on lifestyle and diet.
If you’re taking prescription medication, pregnant, or have an existing health condition, please consult your GP or healthcare professional before starting any supplement.
Store your supplements in a cool, dry place away from direct sunlight and moisture. Keep out of reach of children.
All orders are packed and shipped from our USA warehouse to ensure quick and reliable delivery.
Yes — we ship worldwide. Shipping rates and delivery times vary by location and are calculated at checkout.
Normally 3-5 working days
Once your order is dispatched, you’ll receive a confirmation email with a tracking link. You can use this link to monitor your parcel’s delivery progress.
We do not accept returns once a product has been opened or delivered, unless it arrives damaged or faulty.
If your order arrives damaged, please contact our customer support team within 2 days of delivery with your order number and a photo of the item. We’ll review your case and arrange a replacement as quickly as possible in line with our policy.
Yes — you can save by subscribing for regular deliveries or purchasing multi-pack bundles. Subscriptions can be managed or cancelled anytime through your account.
Yes — many of our products are designed to be taken together safely. However, always check the nutritional label to ensure you’re not exceeding the recommended daily intake of any nutrient.
You can reach us anytime via our contact page or email us at support@sigmaformulas.com.
Our team typically replies within 24 hours (Monday–Friday).
Yes — all our products are manufactured to high standards and contain no banned substances. However, we recommend checking the product ingredients with your sports body’s supplement guidelines if you compete professionally.
At the moment, Sigma Formulas is available exclusively online to ensure freshness, authenticity, and direct customer support.
Sigma Formulas – Additional FAQs
Find answers to common questions about our premium supplements and formulations.
Each product page includes clear information about its purpose, benefits, and key ingredients. You can also use our upcoming “Find Your Formula” quiz to get personalised recommendations based on your goals, such as energy, focus, or sleep.
Yes — our supplements are designed for daily use and are safe when taken as directed. Consistency is key to achieving the best results, just like a healthy diet or exercise routine.
No. We avoid unnecessary fillers, artificial colours, or preservatives. Sigma Formulas products are made with clean, premium-grade ingredients and no hidden additives. You can filter products to the the product specifications you would like.
Many of our products are free from common allergens, including gluten, dairy, and soy. Please always check the ingredient list on each product page if you have a specific allergy or intolerance.
All Sigma Formulas products are made in GMP-certified and ISO-approved USA facilities. Each batch undergoes independent third-party testing for safety, purity, and potency.
We recommend consulting your GP or midwife before taking any supplements during pregnancy or breastfeeding, as individual nutritional needs vary.
At the moment, we don’t offer sample sizes, but we frequently run bundle discounts and introductory offers for new customers. Sign up for our newsletter to stay updated.
We process orders quickly, but if you contact us within a few hours of placing your order, we’ll do our best to amend or cancel it before dispatch.
Yes — we offer digital gift cards that can be used on any product across the Sigma Formulas website. They make a great option for friends or family interested in health and wellness.
We accept all major credit and debit cards, PayPal, Apple Pay, and Google Pay. All transactions are processed securely.
Yes — we occasionally run discounts for students, NHS staff, and healthcare professionals. You can verify your status during checkout or subscribe to our newsletter for exclusive offers.
Absolutely. Our formulas are developed for performance, recovery, and overall wellness. They contain no banned substances and are suitable for regular gym-goers and professional athletes alike.
You can select “Subscribe & Save” on any eligible product page. Choose your delivery frequency (e.g. every 30, 60, or 90 days) and enjoy automatic deliveries with built-in discounts.
You can log in to your Sigma Formulas account anytime to pause, edit, or cancel your subscription — no hidden terms or fees.
If your parcel arrives damaged, please email support@sigmaformulas.com with your order number and a photo of the item. Our support team will arrange a replacement or refund as quickly as possible.
Yes — our packaging is fully recyclable and we’re actively working toward carbon-neutral shipping. We aim to reduce waste wherever possible across our production and delivery process.
Yes, each product includes a printed expiry date or best-before date on the bottle or packaging to ensure quality and freshness.
Yes — our capsules are designed to be smooth and easy to swallow, and our gummies are soft-textured with natural fruit flavours for an enjoyable experience.
Unless stated otherwise, most Sigma Formulas supplements are best taken with food to aid absorption and reduce stomach discomfort. Always check the label for specific directions.
Yes, most of our formulas can be safely combined. For example, you can take our multivitamin alongside our omega-3 or sleep support formula. Just make sure not to exceed the recommended daily amounts for any nutrient.
Yes — unopened items can be returned within 30 days of delivery for a full refund. Please see our Returns Policy page for full details.
If you notice an error right after ordering, please email us immediately. If the order hasn’t been shipped yet, we’ll update the address for you.
Join our email newsletter or follow us on Instagram and TikTok (@sigmaformulas) for updates, wellness tips, and exclusive promotions.
After your purchase, you’ll receive an email with a quick link to rate your product and share feedback. Reviews help us improve and guide other customers.
Yes — customers can share their unique referral link to give friends a discount and earn rewards for each successful referral. Details are available in your account dashboard.
Most of our supplements are intended for adults aged 18 and over. Please check individual product labels for age-specific suitability or dosage advice.
Yes — we use natural fruit flavours and plant-based sweeteners (such as stevia) to create a pleasant taste without unnecessary sugar or artificial chemicals.
Yes, our products are designed for safe, long-term use when taken as directed. Many customers take them daily as part of a healthy lifestyle.
Missing an occasional dose won’t affect your results significantly. Simply resume your regular schedule — there’s no need to double up on doses.
For influencer, affiliate, or wholesale partnerships, please contact collabs@sigmaformulas.com with your proposal or social links. We’d love to hear from you.
Sigma Formulas – Additional FAQ Set (Unique Questions)
Find answers to unique questions about our premium supplements and formulations.
Some products can be taken without food, but others (especially fat-soluble vitamins and minerals like zinc or iron) are best taken with meals to improve absorption and avoid stomach upset. Always check the label for guidance.
Each formula is designed by our in-house team of nutritionists and reviewed by independent experts. We focus on evidence-based ingredients, optimal dosages, and clean manufacturing — no unnecessary fillers or artificial additives.
Most of our supplements are sugar-free or contain only naturally derived sweeteners like stevia or monk fruit. Each label clearly lists the exact sugar content (if any).
We use airtight, UV-protected packaging and manufacture in small batches to guarantee that each product maintains full potency and freshness through its shelf life.
Yes — our packaging is travel-friendly. You can carry capsules and powders in your hand luggage, but always check airline regulations if you’re flying internationally.
Typically 18–24 months from production. You’ll find the best-before date printed on each bottle or pouch.
We source only high-quality, bioavailable ingredients from trusted global suppliers. Every batch is lab-tested for purity, potency, and safety before leaving our facility.
Yes — most of our range is compatible with these lifestyles. Check individual labels for carbohydrate or sugar content to be sure.
Bioavailability refers to how well your body absorbs and uses a nutrient. We design all Sigma Formulas products with bioavailability in mind, using forms that are easier for your body to absorb — such as methylated vitamins and chelated minerals.
Yes, but be cautious of overlapping ingredients that might lead to excessive intake (for example, two products both containing high doses of Vitamin D). Always review the label or ask a professional if unsure.
Don’t worry — simply continue with your regular schedule the next day. There’s no need to double the dose.
Yes — many of our supplements are fully plant-based. Each product clearly states “Vegan” or “Vegetarian” on the label so you can shop confidently.
Every batch is tested for heavy metals, microbiological contamination, and ingredient accuracy before being released. We comply with UK and EU supplement safety standards.
Most supplements are designed for adults aged 18+. Teenagers should consult a healthcare professional before use unless a product specifically states it’s suitable for younger age groups.
Yes, most Sigma Formulas supplements won’t break a fast if they contain no calories, sugars, or flavouring. However, if a supplement includes oils or proteins, it’s best taken with food.
It depends on the type of supplement:
Energy or focus products → morning or midday
Sleep or relaxation products → evening
Multivitamins or probiotics → with meals
We recommend pairing complementary products (e.g., probiotics with fibre, or omega-3 with vitamin D). You’ll find combination guides and “wellness bundles” on our product pages.
Yes — all products are produced in facilities that follow strict allergen control procedures. Major allergens (such as gluten, dairy, soy, or nuts) are clearly labelled where applicable.
Currently, Sigma Formulas is available exclusively online to guarantee the freshest stock and direct customer support. Any third-party sellers should be verified through our official partners page.
Yes — our Loyalty Programme lets you earn points for every purchase, which can be redeemed for discounts on future orders.
Our blog covers practical guides, supplement education, and expert tips on topics like gut health, sleep, stress, and immunity. Follow us on Instagram and TikTok for daily wellness advice.
We’re committed to eco-friendly practices — recyclable packaging, carbon-efficient delivery partners, and minimal waste production. We also continuously review suppliers to reduce environmental impact.
Yes — if you create an account, you can reorder in one click from your dashboard. Subscribed customers receive automatic refills at their chosen frequency.
Stop using the product immediately and contact your healthcare professional. Then reach out to our support team with your order details so we can assist and document the issue.
No. All Sigma Formulas products are non-GMO and made using natural ingredients only.
We use plant-based capsules in most of our range. Any products containing gelatine will be clearly labelled.
Sometimes, your body needs a short adjustment period, especially for probiotics, detox, or high-potency vitamin blends. These effects are temporary, but if discomfort persists, stop use and contact your GP.
No — supplements should complement, not replace, a balanced diet. They help fill nutritional gaps and support wellbeing when used alongside good nutrition and lifestyle habits.
Yes — we offer curated wellness bundles that combine products designed to work together (e.g., “Sleep + Calm Bundle” or “Gut Health Starter Pack”) at discounted prices.
After purchase, you’ll get an automated email inviting you to review your product. You can also share feedback anytime through your account dashboard or by emailing reviews@sigmaformulas.com.