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Comparison · Pregnancy Smart

Reliefband vs Sea-Bands for pregnancy nausea

Assigned clinical reviewerSharyn Harrison· CNM, NPDraft · pending clinical reviewUpdated

How do the options compare?

The comparison below weighs mainstream OB guideline standing, the depth of the pregnancy evidence base, dosing clarity, expected onset, and interactions worth flagging to your provider.

OptionStudied pregnancy doseGuideline supportNotes
Acupressure wristbands (Sea-Bands)Worn over PC6 on the inner wrist. In the pregnancy trial, one band on each forearm, three times a day, for at least 10 minutes before each mealIn a randomized trial of 90 women hospitalized with hyperemesis gravidarum, 93.3% of the acupressure group had mild nausea scores at 24 hours, and 26.7% needed no metoclopramide at allNo battery, no charging, no settings. No side effects were reported by any participant in that pregnancy trial, and a pregnancy-specific meta-analysis found acupressure had a higher effective rate than conventional medicine (RR 1.55)
Electrical nerve-stimulation bands (Reliefband)Worn on one wrist over the same PC6 point, with intensity and wear time set by the device's own instructionsReliefBand is named among the PC6 stimulation methods in the Cochrane review, whose pooled results come from postoperative nausea and vomiting trials rather than pregnancy trialsAgainst sham, PC6 stimulation reduced nausea (RR 0.68 across 40 trials, 4,742 participants) and vomiting (RR 0.60 across 45 trials, 5,147 participants). Against antiemetic drugs there was no difference. Local effects were skin irritation, blistering, redness, and pain
  • PC6 lies between the tendons of the palmaris longus and flexor carpi radialis muscles, 4 cm proximal to the wrist crease, and the methods pooled at that point include acupressure, transcutaneous electrical nerve stimulation, and the commercial ReliefBand and SeaBands devices. 1
  • Against sham, PC6 acupoint stimulation reduced the incidence of nausea (RR 0.68, 95% CI 0.60 to 0.77, 40 trials, 4,742 participants) and vomiting (RR 0.60, 95% CI 0.51 to 0.71, 45 trials, 5,147 participants), while against antiemetic drugs there was no difference for nausea (RR 0.91) or vomiting (RR 0.93). 1
  • In a randomized trial of 90 women with hyperemesis gravidarum, wristbands were applied to both forearms three times a day for at least 10 minutes before each meal, 93.3% of the acupressure group had mild scores at 24 hours, and no participant reported any side effect. 2
  • A pregnancy-specific systematic review pooling 12 acupressure trials found a higher effective rate with acupressure than with conventional medicine (RR 1.55, 95% CI 1.30 to 1.86), with five articles reporting no adverse events. 3
  • Nausea and vomiting affects about 8 out of 10 pregnancies and its most severe form, hyperemesis gravidarum, occurs in up to 3 out of 100 pregnancies with weight loss and dehydration, which is the population the wristband trial studied. 4

Which option makes sense?

The options above differ in their evidence, limitations, and suitability. Inclusion in this comparison is not a recommendation. Please consult your healthcare provider before making a decision based on these findings.

Disclosure: Pregnancy Smart offers a supplement that overlaps with one or more options above. This page describes the pregnancy evidence for each option on its own merits.

Frequently asked questions

Do morning sickness bands actually work?

The pregnancy evidence is real but modest. A meta-analysis pooling 12 acupressure trials found a higher effective rate than conventional medicine, and a hyperemesis trial found 93.3% of the band group at mild scores by 24 hours. In the broader PC6 review, stimulation beat sham but matched antiemetic drugs rather than beating them.

Is Reliefband safe to use during pregnancy?

We found no pregnancy-specific trial of the electrical devices. ReliefBand appears in the PC6 review alongside acupressure, but those pooled results come from postoperative nausea studies. Check the device's own labeling for what it says about pregnancy, and ask your provider before using it.

Where exactly is the P6 pressure point?

On the inner forearm, between the tendons of the palmaris longus and flexor carpi radialis muscles, about 4 cm proximal to the wrist crease. The hyperemesis trial described it as roughly two inches up from the wrist crease, between those two tendons. Both bands are designed to sit there.

How long do you wear nausea bands each day?

In the pregnancy trial the schedule was three times a day for at least 10 minutes before breakfast, lunch, and dinner, on both wrists. That is far less than all-day wear, which is worth knowing before you assume they need to stay on constantly.

Are Sea-Bands worth buying?

They are the version with pregnancy trial data, no power source, and a side-effect list that runs to skin irritation and redness. That combination makes them a low-cost thing to try alongside whatever your provider has recommended, rather than instead of it.

Related in the library

References

  4. Nausea and Vomiting in Pregnancy (NVP): MotherToBaby Fact Sheet

    MotherToBaby · https://mothertobaby.org/fact-sheets/nausea-vomiting-pregnancy-nvp/

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.