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Pyrilamine use while Breastfeeding

Drugs containing Pyrilamine: Pamprin Multi-Symptom Menstrual Relief, Resperal, Capron DMT, Tanoral, Midol PMS Maximum Strength, Menstrual Pain Relief, Syncol, Midol Complete, Dermagesic, Menstrual Relief, Show all 165 »Ninjacof, Aldex D, Tannate 12D S, Triplex DM, V-Tann, Dicomal-DH, A-Tan 12X, Rolatuss with Hydrocodone, Ru-Tuss with Hydrocodone, Vetuss HC Syrup, PhendaCof Plus, Hycomal DH, Hyco-DH, Poly Hist DHC, Codal-DH Syrup, Hydrophene DH, Codituss DH, De-Chlor MR, Mintuss MR, Trimal DH, Ryna-12X, Capron DM, Poly Hist HC, Codimal DM, Zotex-12, Deconsal DM Tannate, Aldex DM, Viravan-P, Pyril D, Viratan-DM, Codituss DM, Ru-Hist D (old formulation), Reme Hist DM, Pryil DM, MyHist-DM, Tannate V DM, Ru-Hist Plus, Deconsal DM, Viravan-PDM, Tussplex, Delhist D, Viravan-S, K-Tan, Pyrlex PD, Myci Spray, Rynesa 12S, Deconsal CT, Viravan-T, K-Tan 4, Ryna-12, Poly-Histine, Pyril Mal Phenyl HCl, Deconsal CT Tannate, Poly Hist Forte (old formulation), Ry-T-12, R-Tannic-S A/D, Pyril Tann-12, Tri-Histine, Ryna-12S, Multihistamine-D, Polytine D, Multihistamine-D Ped, Poly-D, Delhistine D, Poly-Histine-D, Prohistine-D, V-Tan DM, Trihist-D, Quadra-Hist D, Liqui-Histine-D, KG-Hist D, Iohist D, Histine-D, Uni-Multihist D Ped, Liqui-Minic Infant, Quadra-Hist D Pediatric, Metahistine D, Coryza-DM, Viravan-DM, Gelhist Pediatric, Pro-Chlo, Histalet Forte, Vanex Forte, Atrohist Pediatric, Rynatan-S Pediatric, R-Tannate Pediatric, R-Tannate, Corzall Plus, Triotann-S, R-Tannamine Pediatric, Triotann-S Pediatric, Tanoral Pediatric, Equitan Pediatric, Triple Tannate Pediatric, Tri-Tannate, Pyrlex CB, Zotex-D, Tri-Tannate Pediatric, Menstrual Relief Multi-Symptom, Menstrual Relief Extra Strength, Menstrual Relief Maximum Strength, Menstrual Complete, Ninjacof-A, Covangesic, Premsyn PMS, Pamprin Maximum Pain, Menstrual PMS, Tussi-12D, PMS Formula Multi-Symptom, PMS Relief, HistaFlex, Z-Xtra, Tussi-12D S, C-Tanna 12D, Tannihist-12D, Tanamine Pediatric, Rhinatate Pediatric, Codal-DM Syrup, Dicomal-PH, Phena-S 12, MyHist-PD, Triplex AD, Zotex-C, Codimal PH, Pro-Red AC (old formulation), Neo AC, Pyrichlor PE, Pro-Clear AC, Poly Tan DM, Poly Tan D, Poly Tan, ProHist, P-Hist, Nalfrx, Poly Hist PD (old formulation), Conal, Rhinatate, Histatan, Url-Tannate Pediatric, Tritan, Tanamine, R-Tannamine, URL-Tannate, Triotann, Ru-Hist Forte, Phena-S, AllerTan, Triotann Pediatric, Chlorex-A 12, Tri-Gestan S, Tri-Hist Pediatric, Phena-Plus, Tri Tann Pediatric, Nalex A 12, Pyrlex

Medically reviewed on March 12, 2018.

Pyrilamine Levels and Effects while Breastfeeding

Summary of Use during Lactation

Small, occasional doses of pyrilamine are probably acceptable during breast feeding. Larger doses or more prolonged use may cause effects in the infant or decrease the milk supply, particularly, in combination with a sympathomimetic such as pseudoephedrine or before lactation is well established. The nonsedating antihistamines are preferred alternatives.

Drug Levels

Maternal Levels. One early study that used a biologic assay system reported that after a 100 mg intramuscular dose of diphenhydramine in 3 women, drug levels in milk ranged from 50 to 2.3 mg/L at 1 to 2 hours after the dose and 220 mcg/L to 4 mg/L 5 hours after the dose. Eight hours after the dose, levels were 200 mcg/L and 1.16 mg/L in two mothers, respectively, and not measured in the third.[1] No studies using modern assay methods have been reported.

Infant Levels. Relevant published information was not found as of the revision date.

Effects in Breastfed Infants

Relevant published information on pyrilamine was not found as of the revision date. In one telephone follow-up study, mothers reported irritability and colicky symptoms 10% of infants exposed to various antihistamines and drowsiness was reported in 1.6% of infants. None of the reactions required medical attention and none of the infants were exposed to pyrilamine.[2]

Effects on Lactation and Breastmilk

Antihistamines in relatively high doses given by injection can decrease basal serum prolactin in nonlactating women and in early postpartum women.[3][4] However, suckling-induced prolactin secretion is not affected by antihistamine pretreatment of postpartum mothers.[3] Whether lower oral doses of antihistamines have the same effect on serum prolactin or whether the effects on prolactin have any consequences on breastfeeding success have not been studied.

Alternate Drugs to Consider

Desloratadine, Fexofenadine, Loratadine

References

1. Rindi V. La eliminazione degli antistaminici di sintesi con il latte e l'azione latto-goga de questi. Riv Ital Ginecol. 1951;34:147-57.

2. Ito S, Blajchman A, Stephenson M et al. Prospective follow-up of adverse reactions in breast-fed infants exposed to maternal medication. Am J Obstet Gynecol. 1993;168:1393-9. PMID: 8498418

3. Messinis IE, Souvatzoglou A, Fais N et al. Histamine H1 receptor participation in the control of prolactin secretion in postpartum. J Endocrinol Invest. 1985;8:143-6. PMID: 3928731

4. Pontiroli AE, De Castro e Silva E, Mazzoleni F et al. The effect of histamine and H1 and H2 receptors on prolactin and luteinizing hormone release in humans: sex differences and the role of stress. J Clin Endocrinol Metab. 1981;52:924-8. PMID: 7228996

Pyrilamine Identification

Substance Name

Pyrilamine

CAS Registry Number

91-84-9

Drug Class

Antihistamines

Administrative Information

LactMed Record Number

232

Disclaimer

Information presented in this database is not meant as a substitute for professional judgment. You should consult your healthcare provider for breastfeeding advice related to your particular situation. The U.S. government does not warrant or assume any liability or responsibility for the accuracy or completeness of the information on this Site.

Further information

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