Now accepting phone orders Monday through Friday from 6:00am to 5:00pm Pacific, (800)875-0511, we can't wait to hear from you!

Frequently Asked Questions

Wholesale Purchasing

Q: How can I open a Wholesale account?

A: Our wholesale clients are required to be either of the following:

  • Healthcare professionals
  • Licensed business owners

Please contact us at (800) 875-0511 or for a wholesale application if you meet one of the two requirements listed above.

Q: Can I place a retail order over the phone?

A: Yes, InterPlexus can be reached at (800)875-0511 and we are more than happy to take your order over the phone.


Q: How long does it take for (insert supplement here) to work, or benefit from?

A: Although supplements are beneficial from the first dose, there is no exact time frame available for individual consumers. We suggest giving each product at least 30 days to allow for changes to take effect.

Q: Are these supplements safe to take for a prolonged time?

A: As always, we suggest consulting with your healthcare provider regarding your specific circumstances. For many people, supplements provide a great way to stay healthy and can supply valuable nutrients when there may be a deficiency. In these cases, InterPlexus' supplements are generally considered safe for daily use.

Q: Can I take prescribed medications with your products?

A: Depending on the medication you have been prescribed, it is best to speak with your healthcare provider to further discuss the possible outcomes of using supplements with medications. InterPlexus provides full data sheets (on our website) to use as a resource when consulting with your provider.

Q: What are the suggested dosage amounts for children?

A: Dosage amounts for children are best decided by the child’s pediatrician.

Q: Can I take your probiotics with antibiotics?

A: Providers generally suggest taking probiotics and antibiotics separately. They can be taken on the same day; however, it is best to schedule their consumption as far apart as possible. It is best to consult with your healthcare provider and determine a schedule that would be beneficial to you and your circumstances.

Q: Can the capsules be opened and mixed with food or water?

A: Unless otherwise specified on the label, the capsule can be opened, and the ingredients can be mixed with food or water. We do suggest a soft food i.e., yogurt or applesauce rather than water. Several of our products contain ingredients with a sticky consistency that does not always dissolve in liquids.

Q: What is the half-life of your products?

A: There have been no studies regarding the elimination from the body for our products; therefore, we do not know the half-life of any product. We do hear from providers that patients benefit most when our supplements are taken daily. Therefore, it is likely that they may be eliminated relatively quickly.

Q: Why do InterPlexus’ supplements look different from bottle to bottle?

A: At InterPlexus we strive to deliver the highest quality/purity possible with minimal excipients, which often means the color of the blend may vary from batch to batch depending on the raw ingredients.

Manufacture Date

Q: What is the date found on InterPlexus products?

A: InterPlexus uses manufacturing dates on our products to indicate stability.

Q: What is a Manufacturing Date?

A: A manufacturing date is the date when the product was manufactured.

Q: Why does InterPlexus use a manufacture date and not an expiration date?

A: Unlike pharmaceuticals and food, supplements are at exceptionally low risk of releasing toxins when they begin to degrade. In most cases, supplements simply begin to lose their potency and become less effective over time.

Q: How long after the manufacture date do InterPlexus supplements (excluding Probiotics) begin to lose their potency?

A: If stored correctly, the potency of InterPlexus’ supplements remains good for at least 3 years (if not longer).

Q: Can I still use an InterPlexus product if it is more than 3 years past its manufacture date?

A: Although we don't recommend using products older than 3 years, they are not harmful to take. If a product is more than 3 years past its manufacture date, it doesn't mean it has "gone bad", it simply means one or more of the active ingredients might have less potency than indicated by the label.

Product Storage

Q: How do I store InterPlexus supplements (excluding Probiotics) correctly?

A: InterPlexus's supplements should be stored in a cool, dry place, away from excessive sunlight and high temperatures.

Q: How do I store InterPlexus probiotics correctly?

A: InterPlexus's probiotics should be stored in a cool, dry place, away from excessive sunlight and high temperatures. Probiotics can be stored in a refrigerator to help slow the degradation process.

Q: I received my probiotics in a box without anything to keep them cool, are they still viable?

A: Yes, the Probiotics are stored in a freezer at InterPlexus and only removed immediately before shipping to keep everything as fresh as possible. After receiving your probiotics, it is recommended they be stored in a refrigerator until ready for use.


Q: Is it necessary to take Seriphos before a meal?

A: Taking Seriphos 15-20 minutes prior to a meal is intended to optimize absorption. Considering individual health needs and/or directions from your healthcare provider, adjusting the timing of a dose is perfectly fine.

Q: Why do you have Ethanolamine listed as an ingredient in Seriphos?

A: Seriphos provides phosphorylated serine along with a synergistic blend of magnesium and calcium ethanolamine phosphates. Phosphorylated serine and ethanolamine phosphate serve as metabolic building blocks for the synthesis of phosphatidylserine and phosphatidylethanolamine, cell membrane phospholipids that regulate key aspects of cellular function.

Q:  Is Phosphorylated Ethanolamine safe to take as a supplement?

A:  Yes! Phosphorylated Ethanolamine, also known as ethanolamine phosphate, occurs naturally in all cells and is a building block for making membrane phospholipids, including phosphatidylethanolamine, phosphatidylcholine, and phosphatidylserine. Ethanolamine phosphate is also a source of inorganic phosphate for the mineralization and strengthening of bone. According to animal and cell studies, ethanolamine phosphate may support improved mitochondrial function (energy production), optimal phospholipid balance in cell membranes during cortisol elevations (optimal cell membrane function during stress), and healthy cholesterol levels. For more information on this topic, please refer to our blog on the safety and benefits of phospholipids. 

Q: How is Phosphorylated Serine different from Phosphatidyl Serine (PS)?

A: Phosphorylated serine or phosphoserine is a compound of serine and phosphate without the fatty acid chains. Phosphatidylserine contains two fatty acid chains in addition to serine and phosphate. Phosphorylated serine serves as a metabolic building block for the synthesis of phosphatidylserine.


Q: How can I view the Datasheets?

A: You can find links to the data sheets on the product pages below the "Add to Cart" Menu

Datasheet Links

Sales Tax

Q: In what states does InterPlexus collect Sales Tax?

A: InterPlexus collects sales tax in the states of Washington and Arizona.

Q: Is InterPlexus required to collect sales tax?

A: InterPlexus is required to collect and remit sales tax on products where we meet the following requirements, (1) we have physical or economic nexus and (2) where Dietary Supplements are not tax exempt.

Q: Where does InterPlexus have physical nexus?

A: As InterPlexus is a Washington-based company, we have physical nexus in Washington and as such are required to collect and remit sales tax to the state of Washington.

Q: What is economic nexus?

A: Economic Nexus, simply stated, requires sellers to collect sales tax in states where the seller's sales exceed the state's monetary or transactional threshold. For more information on economic nexus please visit this link.

Q: Where does InterPlexus have economic nexus?

A: In the case of InterPlexus, we have economic nexus in Arizona because we exceed the state’s monetary and transactional threshold.

Q: Does Arizona exempt dietary supplements from the collection of sales tax?

A: No, Arizona does not exempt dietary supplements from the collection of sales tax like some other states (ex. Florida) so sales tax must be collected on the sale of our products. For more information, please visit this link.


Q: Who can I contact for technical questions/directions not listed here?

A: InterPlexus does have medical support available, however, answers are limited to product specifications. Questions regarding individual health concerns or diagnoses are best discussed with your trusted healthcare provider. If you have any additional questions please feel free to fill out our contact us form or call us at (800)875-0511.